From 9caebec7b8093574fca5a334a1939530872d75e3 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Sat, 12 May 2007 17:56:11 +0200
Subject: [AVR32] optimize pagefault path

Avoid the costly notifier list in the pagefault path and call
the kprobes code directly.  The same change went into the 2.6.22
cycle for powerpc, 2s390 and sparc64 already.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
---
 include/asm-avr32/kdebug.h  | 17 +++++++++++++----
 include/asm-avr32/kprobes.h |  1 +
 2 files changed, 14 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/asm-avr32/kdebug.h b/include/asm-avr32/kdebug.h
index de419278fc39..7f54e2b15d13 100644
--- a/include/asm-avr32/kdebug.h
+++ b/include/asm-avr32/kdebug.h
@@ -5,13 +5,22 @@
 
 /* Grossly misnamed. */
 enum die_val {
-	DIE_FAULT,
 	DIE_BREAKPOINT,
 	DIE_SSTEP,
-	DIE_PAGE_FAULT,
 };
 
-int register_page_fault_notifier(struct notifier_block *nb);
-int unregister_page_fault_notifier(struct notifier_block *nb);
+/*
+ * These are only here because kprobes.c wants them to implement a
+ * blatant layering violation.  Will hopefully go away soon once all
+ * architectures are updated.
+ */
+static inline int register_page_fault_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+static inline int unregister_page_fault_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
 
 #endif /* __ASM_AVR32_KDEBUG_H */
diff --git a/include/asm-avr32/kprobes.h b/include/asm-avr32/kprobes.h
index 09a5cbe2f896..190a6377c809 100644
--- a/include/asm-avr32/kprobes.h
+++ b/include/asm-avr32/kprobes.h
@@ -26,6 +26,7 @@ struct arch_specific_insn {
 	kprobe_opcode_t	insn[MAX_INSN_SIZE];
 };
 
+extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
 extern int kprobe_exceptions_notify(struct notifier_block *self,
 				    unsigned long val, void *data);
 
-- 
cgit v1.2.3


From 78c129b949bdee21dd996ac5f5cfc655cd5bd42e Mon Sep 17 00:00:00 2001
From: Haavard Skinnemoen <hskinnemoen@atmel.com>
Date: Sun, 13 May 2007 16:33:33 +0200
Subject: [AVR32] Wire up signalfd, timerfd and eventfd

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
---
 arch/avr32/kernel/syscall_table.S | 3 +++
 include/asm-avr32/unistd.h        | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
index 07f6a6fa340d..75c81f2dd0b3 100644
--- a/arch/avr32/kernel/syscall_table.S
+++ b/arch/avr32/kernel/syscall_table.S
@@ -292,4 +292,7 @@ sys_call_table:
 	.long	sys_shmdt
 	.long	sys_shmctl
 	.long	sys_utimensat
+	.long	sys_signalfd
+	.long	sys_timerfd		/* 280 */
+	.long	sys_eventfd
 	.long	sys_ni_syscall		/* r8 is saturated at nr_syscalls */
diff --git a/include/asm-avr32/unistd.h b/include/asm-avr32/unistd.h
index 2418cce624cc..3b4e35b55c82 100644
--- a/include/asm-avr32/unistd.h
+++ b/include/asm-avr32/unistd.h
@@ -296,9 +296,12 @@
 #define __NR_shmctl		277
 
 #define __NR_utimensat		278
+#define __NR_signalfd		279
+#define __NR_timerfd		280
+#define __NR_eventfd		281
 
 #ifdef __KERNEL__
-#define NR_syscalls		279
+#define NR_syscalls		282
 
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
-- 
cgit v1.2.3


From ae67e498a54259364f7211e10d9834575b340b21 Mon Sep 17 00:00:00 2001
From: Tony Luck <tony.luck@intel.com>
Date: Mon, 14 May 2007 15:55:11 -0700
Subject: [IA64] wire up {signal,timer,event}fd syscalls

Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/entry.S  | 3 +++
 include/asm-ia64/unistd.h | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 144b056282af..95f517515235 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1585,5 +1585,8 @@ sys_call_table:
 	data8 sys_getcpu
 	data8 sys_epoll_pwait			// 1305
 	data8 sys_utimensat
+	data8 sys_signalfd
+	data8 sys_timerfd
+	data8 sys_eventfd
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls
diff --git a/include/asm-ia64/unistd.h b/include/asm-ia64/unistd.h
index f049bc40ca7d..d7781a2ddefe 100644
--- a/include/asm-ia64/unistd.h
+++ b/include/asm-ia64/unistd.h
@@ -296,11 +296,14 @@
 #define __NR_getcpu			1304
 #define __NR_epoll_pwait		1305
 #define __NR_utimensat			1306
+#define __NR_signalfd			1307
+#define __NR_timerfd			1308
+#define __NR_eventfd			1309
 
 #ifdef __KERNEL__
 
 
-#define NR_syscalls			283 /* length of syscall table */
+#define NR_syscalls			286 /* length of syscall table */
 
 #define __ARCH_WANT_SYS_RT_SIGACTION
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
-- 
cgit v1.2.3


From d0a2b7af27f6d01a443f3af8252fa0b955bf1913 Mon Sep 17 00:00:00 2001
From: Haavard Skinnemoen <hskinnemoen@atmel.com>
Date: Wed, 21 Mar 2007 18:08:49 +0100
Subject: [AVR32] Implement platform hooks for atmel_lcdfb driver

This modifies and extends the existing lcdc platform code to support
the new atmel_lcdfb driver. The ATSTK1000 board code is set up to use
the on-board Samsung LTV350QV LCD panel.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
---
 arch/avr32/boards/atstk1000/atstk1000.h | 15 +++++++
 arch/avr32/boards/atstk1000/atstk1002.c | 10 ++---
 arch/avr32/boards/atstk1000/setup.c     | 45 ++++++++++++++++++-
 arch/avr32/mach-at32ap/at32ap7000.c     | 77 +++++++++++++++++++++++++--------
 include/asm-avr32/arch-at32ap/board.h   |  8 ++--
 5 files changed, 127 insertions(+), 28 deletions(-)
 create mode 100644 arch/avr32/boards/atstk1000/atstk1000.h

(limited to 'include')

diff --git a/arch/avr32/boards/atstk1000/atstk1000.h b/arch/avr32/boards/atstk1000/atstk1000.h
new file mode 100644
index 000000000000..9a49ed036b72
--- /dev/null
+++ b/arch/avr32/boards/atstk1000/atstk1000.h
@@ -0,0 +1,15 @@
+/*
+ * ATSTK1000 setup code: Daughterboard interface
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H
+#define __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H
+
+extern struct atmel_lcdfb_info atstk1000_lcdc_data;
+
+#endif /* __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H */
diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index abe6ca203fa7..fe1dbe2e28f4 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -16,6 +16,8 @@
 #include <linux/types.h>
 #include <linux/spi/spi.h>
 
+#include <video/atmel_lcdc.h>
+
 #include <asm/io.h>
 #include <asm/setup.h>
 #include <asm/arch/at32ap7000.h>
@@ -23,6 +25,7 @@
 #include <asm/arch/init.h>
 #include <asm/arch/portmux.h>
 
+#include "atstk1000.h"
 
 #define	SW2_DEFAULT		/* MMCI and UART_A available */
 
@@ -31,9 +34,7 @@ struct eth_addr {
 };
 
 static struct eth_addr __initdata hw_addr[2];
-
 static struct eth_platform_data __initdata eth_data[2];
-static struct lcdc_platform_data atstk1000_fb0_data;
 
 static struct spi_board_info spi0_board_info[] __initdata = {
 	{
@@ -148,9 +149,8 @@ static int __init atstk1002_init(void)
 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 
 	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-	atstk1000_fb0_data.fbmem_start = fbmem_start;
-	atstk1000_fb0_data.fbmem_size = fbmem_size;
-	at32_add_device_lcdc(0, &atstk1000_fb0_data);
+	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+			     fbmem_start, fbmem_size);
 
 	return 0;
 }
diff --git a/arch/avr32/boards/atstk1000/setup.c b/arch/avr32/boards/atstk1000/setup.c
index 2bc4b88d7edb..c9af409ada9a 100644
--- a/arch/avr32/boards/atstk1000/setup.c
+++ b/arch/avr32/boards/atstk1000/setup.c
@@ -8,13 +8,56 @@
  * published by the Free Software Foundation.
  */
 #include <linux/bootmem.h>
+#include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/linkage.h>
 
-#include <asm/setup.h>
+#include <video/atmel_lcdc.h>
 
+#include <asm/setup.h>
 #include <asm/arch/board.h>
 
+#include "atstk1000.h"
+
 /* Initialized by bootloader-specific startup code. */
 struct tag *bootloader_tags __initdata;
+
+static struct fb_videomode __initdata ltv350qv_modes[] = {
+	{
+		.name		= "320x240 @ 75",
+		.refresh	= 75,
+		.xres		= 320,		.yres		= 240,
+		.pixclock	= KHZ2PICOS(6891),
+
+		.left_margin	= 17,		.right_margin	= 33,
+		.upper_margin	= 10,		.lower_margin	= 10,
+		.hsync_len	= 16,		.vsync_len	= 1,
+
+		.sync		= 0,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs __initdata atstk1000_default_monspecs = {
+	.manufacturer		= "SNG",
+	.monitor		= "LTV350QV",
+	.modedb			= ltv350qv_modes,
+	.modedb_len		= ARRAY_SIZE(ltv350qv_modes),
+	.hfmin			= 14820,
+	.hfmax			= 22230,
+	.vfmin			= 60,
+	.vfmax			= 90,
+	.dclkmax		= 30000000,
+};
+
+struct atmel_lcdfb_info __initdata atstk1000_lcdc_data = {
+	.default_bpp		= 24,
+	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
+				   | ATMEL_LCDC_INVCLK
+				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+				   | ATMEL_LCDC_MEMOR_BIG),
+	.default_monspecs	= &atstk1000_default_monspecs,
+	.guard_time		= 2,
+};
diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 56db45b99a0f..1d2bf347a1d6 100644
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -6,6 +6,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/clk.h>
+#include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
@@ -17,6 +18,8 @@
 #include <asm/arch/portmux.h>
 #include <asm/arch/sm.h>
 
+#include <video/atmel_lcdc.h>
+
 #include "clock.h"
 #include "hmatrix.h"
 #include "pio.h"
@@ -881,20 +884,26 @@ at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
 /* --------------------------------------------------------------------
  *  LCDC
  * -------------------------------------------------------------------- */
-static struct lcdc_platform_data lcdc0_data;
-static struct resource lcdc0_resource[] = {
+static struct atmel_lcdfb_info atmel_lcdfb0_data;
+static struct resource atmel_lcdfb0_resource[] = {
 	{
 		.start		= 0xff000000,
 		.end		= 0xff000fff,
 		.flags		= IORESOURCE_MEM,
 	},
 	IRQ(1),
+	{
+		/* Placeholder for pre-allocated fb memory */
+		.start		= 0x00000000,
+		.end		= 0x00000000,
+		.flags		= 0,
+	},
 };
-DEFINE_DEV_DATA(lcdc, 0);
-DEV_CLK(hclk, lcdc0, hsb, 7);
-static struct clk lcdc0_pixclk = {
-	.name		= "pixclk",
-	.dev		= &lcdc0_device.dev,
+DEFINE_DEV_DATA(atmel_lcdfb, 0);
+DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
+static struct clk atmel_lcdfb0_pixclk = {
+	.name		= "lcdc_clk",
+	.dev		= &atmel_lcdfb0_device.dev,
 	.mode		= genclk_mode,
 	.get_rate	= genclk_get_rate,
 	.set_rate	= genclk_set_rate,
@@ -903,13 +912,34 @@ static struct clk lcdc0_pixclk = {
 };
 
 struct platform_device *__init
-at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+		     unsigned long fbmem_start, unsigned long fbmem_len)
 {
 	struct platform_device *pdev;
+	struct atmel_lcdfb_info *info;
+	struct fb_monspecs *monspecs;
+	struct fb_videomode *modedb;
+	unsigned int modedb_size;
+
+	/*
+	 * Do a deep copy of the fb data, monspecs and modedb. Make
+	 * sure all allocations are done before setting up the
+	 * portmux.
+	 */
+	monspecs = kmemdup(data->default_monspecs,
+			   sizeof(struct fb_monspecs), GFP_KERNEL);
+	if (!monspecs)
+		return NULL;
+
+	modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
+	modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
+	if (!modedb)
+		goto err_dup_modedb;
+	monspecs->modedb = modedb;
 
 	switch (id) {
 	case 0:
-		pdev = &lcdc0_device;
+		pdev = &atmel_lcdfb0_device;
 		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
 		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
 		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
@@ -942,19 +972,32 @@ at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
 		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
 		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
 
-		clk_set_parent(&lcdc0_pixclk, &pll0);
-		clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
+		clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
+		clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
 		break;
 
 	default:
-		return NULL;
+		goto err_invalid_id;
 	}
 
-	memcpy(pdev->dev.platform_data, data,
-	       sizeof(struct lcdc_platform_data));
+	if (fbmem_len) {
+		pdev->resource[2].start = fbmem_start;
+		pdev->resource[2].end = fbmem_start + fbmem_len - 1;
+		pdev->resource[2].flags = IORESOURCE_MEM;
+	}
+
+	info = pdev->dev.platform_data;
+	memcpy(info, data, sizeof(struct atmel_lcdfb_info));
+	info->default_monspecs = monspecs;
 
 	platform_device_register(pdev);
 	return pdev;
+
+err_invalid_id:
+	kfree(modedb);
+err_dup_modedb:
+	kfree(monspecs);
+	return NULL;
 }
 
 /* --------------------------------------------------------------------
@@ -1037,8 +1080,8 @@ struct clk *at32_clock_list[] = {
 	&macb1_pclk,
 	&atmel_spi0_spi_clk,
 	&atmel_spi1_spi_clk,
-	&lcdc0_hclk,
-	&lcdc0_pixclk,
+	&atmel_lcdfb0_hck1,
+	&atmel_lcdfb0_pixclk,
 	&gclk0,
 	&gclk1,
 	&gclk2,
@@ -1077,7 +1120,7 @@ void __init at32_clock_init(void)
 	genclk_init_parent(&gclk2);
 	genclk_init_parent(&gclk3);
 	genclk_init_parent(&gclk4);
-	genclk_init_parent(&lcdc0_pixclk);
+	genclk_init_parent(&atmel_lcdfb0_pixclk);
 
 	/*
 	 * Turn on all clocks that have at least one user already, and
diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
index 1a7b07d436ff..9fd2e32f84b8 100644
--- a/include/asm-avr32/arch-at32ap/board.h
+++ b/include/asm-avr32/arch-at32ap/board.h
@@ -30,11 +30,9 @@ struct spi_board_info;
 struct platform_device *
 at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n);
 
-struct lcdc_platform_data {
-	unsigned long fbmem_start;
-	unsigned long fbmem_size;
-};
+struct atmel_lcdfb_info;
 struct platform_device *
-at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data);
+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+		     unsigned long fbmem_start, unsigned long fbmem_len);
 
 #endif /* __ASM_ARCH_BOARD_H */
-- 
cgit v1.2.3


From c7754d465b1feade85b5f1c4492781a30f6652a2 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Tue, 15 May 2007 17:03:54 -0700
Subject: [SPARC64]: Add hypervisor API negotiation and fix console bugs.

Hypervisor interfaces need to be negotiated in order to use
some API calls reliably.  So add a small set of interfaces
to request API versions and query current settings.

This allows us to fix some bugs in the hypervisor console:

1) If we can negotiate API group CORE of at least major 1
   minor 1 we can use con_read and con_write which can improve
   console performance quite a bit.

2) When we do a console write request, we should hold the
   spinlock around the whole request, not a byte at a time.
   What would happen is that it's easy for output from
   different cpus to get mixed with each other.

3) Use consistent udelay() based polling, udelay(1) each
   loop with a limit of 1000 polls to handle stuck hypervisor
   console.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc64/kernel/Makefile     |   2 +-
 arch/sparc64/kernel/entry.S      |  94 +++++++++++++
 arch/sparc64/kernel/hvapi.c      | 189 +++++++++++++++++++++++++++
 arch/sparc64/kernel/setup.c      |   3 +
 drivers/serial/sunhv.c           | 276 +++++++++++++++++++++++++++++----------
 include/asm-sparc64/hypervisor.h |  83 +++++++++++-
 6 files changed, 574 insertions(+), 73 deletions(-)
 create mode 100644 arch/sparc64/kernel/hvapi.c

(limited to 'include')

diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index 6bf6fb65bc20..c749dccacc32 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -12,7 +12,7 @@ obj-y		:= process.o setup.o cpu.o idprom.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
 		   unaligned.o central.o pci.o starfire.o semaphore.o \
 		   power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
-		   visemul.o prom.o of_device.o
+		   visemul.o prom.o of_device.o hvapi.o
 
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
 obj-$(CONFIG_PCI)	 += ebus.o isa.o pci_common.o pci_iommu.o \
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index c15a3edcb826..732b77cb71f8 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1843,3 +1843,97 @@ sun4v_cpu_state:
 	mov	%o1, %o0
 1:	retl
 	 nop
+
+	/* %o0:	API group number
+	 * %o1: pointer to unsigned long major number storage
+	 * %o2: pointer to unsigned long minor number storage
+	 *
+	 * returns %o0: status
+	 */
+	.globl	sun4v_get_version
+sun4v_get_version:
+	mov	HV_CORE_GET_VER, %o5
+	mov	%o1, %o3
+	mov	%o2, %o4
+	ta	HV_CORE_TRAP
+	stx	%o1, [%o3]
+	retl
+	 stx	%o2, [%o4]
+
+	/* %o0: API group number
+	 * %o1: desired major number
+	 * %o2: desired minor number
+	 * %o3: pointer to unsigned long actual minor number storage
+	 *
+	 * returns %o0: status
+	 */
+	.globl	sun4v_set_version
+sun4v_set_version:
+	mov	HV_CORE_SET_VER, %o5
+	mov	%o3, %o4
+	ta	HV_CORE_TRAP
+	retl
+	 stx	%o1, [%o4]
+
+	/* %o0: pointer to unsigned long status
+	 *
+	 * returns %o0: signed character
+	 */
+	.globl	sun4v_con_getchar
+sun4v_con_getchar:
+	mov	%o0, %o4
+	mov	HV_FAST_CONS_GETCHAR, %o5
+	clr	%o0
+	clr	%o1
+	ta	HV_FAST_TRAP
+	stx	%o0, [%o4]
+	retl
+	 sra	%o1, 0, %o0
+
+	/* %o0: signed long character
+	 *
+	 * returns %o0: status
+	 */
+	.globl	sun4v_con_putchar
+sun4v_con_putchar:
+	mov	HV_FAST_CONS_PUTCHAR, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 sra	%o0, 0, %o0
+
+	/* %o0: buffer real address
+	 * %o1: buffer size
+	 * %o2: pointer to unsigned long bytes_read
+	 *
+	 * returns %o0: status
+	 */
+	.globl	sun4v_con_read
+sun4v_con_read:
+	mov	%o2, %o4
+	mov	HV_FAST_CONS_READ, %o5
+	ta	HV_FAST_TRAP
+	brnz	%o0, 1f
+	 cmp	%o1, -1		/* break */
+	be,a,pn	%icc, 1f
+	 mov	%o1, %o0
+	cmp	%o1, -2		/* hup */
+	be,a,pn	%icc, 1f
+	 mov	%o1, %o0
+	stx	%o1, [%o4]
+1:	retl
+	 nop
+
+	/* %o0: buffer real address
+	 * %o1: buffer size
+	 * %o2: pointer to unsigned long bytes_written
+	 *
+	 * returns %o0: status
+	 */
+	.globl	sun4v_con_write
+sun4v_con_write:
+	mov	%o2, %o4
+	mov	HV_FAST_CONS_WRITE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
diff --git a/arch/sparc64/kernel/hvapi.c b/arch/sparc64/kernel/hvapi.c
new file mode 100644
index 000000000000..f03ffc829c7a
--- /dev/null
+++ b/arch/sparc64/kernel/hvapi.c
@@ -0,0 +1,189 @@
+/* hvapi.c: Hypervisor API management.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+#include <asm/hypervisor.h>
+#include <asm/oplib.h>
+
+/* If the hypervisor indicates that the API setting
+ * calls are unsupported, by returning HV_EBADTRAP or
+ * HV_ENOTSUPPORTED, we assume that API groups with the
+ * PRE_API flag set are major 1 minor 0.
+ */
+struct api_info {
+	unsigned long group;
+	unsigned long major;
+	unsigned long minor;
+	unsigned int refcnt;
+	unsigned int flags;
+#define FLAG_PRE_API		0x00000001
+};
+
+static struct api_info api_table[] = {
+	{ .group = HV_GRP_SUN4V,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_CORE,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_INTR,					},
+	{ .group = HV_GRP_SOFT_STATE,				},
+	{ .group = HV_GRP_PCI,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_LDOM,					},
+	{ .group = HV_GRP_SVC_CHAN,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_NCS,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_NIAG_PERF,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_FIRE_PERF,				},
+	{ .group = HV_GRP_DIAG,		.flags = FLAG_PRE_API	},
+};
+
+static DEFINE_SPINLOCK(hvapi_lock);
+
+static struct api_info *__get_info(unsigned long group)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(api_table); i++) {
+		if (api_table[i].group == group)
+			return &api_table[i];
+	}
+	return NULL;
+}
+
+static void __get_ref(struct api_info *p)
+{
+	p->refcnt++;
+}
+
+static void __put_ref(struct api_info *p)
+{
+	if (--p->refcnt == 0) {
+		unsigned long ignore;
+
+		sun4v_set_version(p->group, 0, 0, &ignore);
+		p->major = p->minor = 0;
+	}
+}
+
+/* Register a hypervisor API specification.  It indicates the
+ * API group and desired major+minor.
+ *
+ * If an existing API registration exists '0' (success) will
+ * be returned if it is compatible with the one being registered.
+ * Otherwise a negative error code will be returned.
+ *
+ * Otherwise an attempt will be made to negotiate the requested
+ * API group/major/minor with the hypervisor, and errors returned
+ * if that does not succeed.
+ */
+int sun4v_hvapi_register(unsigned long group, unsigned long major,
+			 unsigned long *minor)
+{
+	struct api_info *p;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	p = __get_info(group);
+	ret = -EINVAL;
+	if (p) {
+		if (p->refcnt) {
+			ret = -EINVAL;
+			if (p->major == major) {
+				*minor = p->minor;
+				ret = 0;
+			}
+		} else {
+			unsigned long actual_minor;
+			unsigned long hv_ret;
+
+			hv_ret = sun4v_set_version(group, major, *minor,
+						   &actual_minor);
+			ret = -EINVAL;
+			if (hv_ret == HV_EOK) {
+				*minor = actual_minor;
+				p->major = major;
+				p->minor = actual_minor;
+				ret = 0;
+			} else if (hv_ret == HV_EBADTRAP ||
+				   HV_ENOTSUPPORTED) {
+				if (p->flags & FLAG_PRE_API) {
+					if (major == 1) {
+						p->major = 1;
+						p->minor = 0;
+						*minor = 0;
+						ret = 0;
+					}
+				}
+			}
+		}
+
+		if (ret == 0)
+			__get_ref(p);
+	}
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL(sun4v_hvapi_register);
+
+void sun4v_hvapi_unregister(unsigned long group)
+{
+	struct api_info *p;
+	unsigned long flags;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	p = __get_info(group);
+	if (p)
+		__put_ref(p);
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+}
+EXPORT_SYMBOL(sun4v_hvapi_unregister);
+
+int sun4v_hvapi_get(unsigned long group,
+		    unsigned long *major,
+		    unsigned long *minor)
+{
+	struct api_info *p;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	ret = -EINVAL;
+	p = __get_info(group);
+	if (p && p->refcnt) {
+		*major = p->major;
+		*minor = p->minor;
+		ret = 0;
+	}
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL(sun4v_hvapi_get);
+
+void __init sun4v_hvapi_init(void)
+{
+	unsigned long group, major, minor;
+
+	group = HV_GRP_SUN4V;
+	major = 1;
+	minor = 0;
+	if (sun4v_hvapi_register(group, major, &minor))
+		goto bad;
+
+	group = HV_GRP_CORE;
+	major = 1;
+	minor = 1;
+	if (sun4v_hvapi_register(group, major, &minor))
+		goto bad;
+
+	return;
+
+bad:
+	prom_printf("HVAPI: Cannot register API group "
+		    "%lx with major(%u) minor(%u)\n",
+		    group, major, minor);
+	prom_halt();
+}
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 451028341c75..dea9c3c9ec5f 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -269,6 +269,7 @@ void __init per_cpu_patch(void)
 
 void __init sun4v_patch(void)
 {
+	extern void sun4v_hvapi_init(void);
 	struct sun4v_1insn_patch_entry *p1;
 	struct sun4v_2insn_patch_entry *p2;
 
@@ -300,6 +301,8 @@ void __init sun4v_patch(void)
 
 		p2++;
 	}
+
+	sun4v_hvapi_init();
 }
 
 #ifdef CONFIG_SMP
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c
index c3a6bd2e7950..96557e6dba60 100644
--- a/drivers/serial/sunhv.c
+++ b/drivers/serial/sunhv.c
@@ -1,6 +1,6 @@
 /* sunhv.c: Serial driver for SUN4V hypervisor console.
  *
- * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <linux/module.h>
@@ -35,57 +35,51 @@
 #define CON_BREAK	((long)-1)
 #define CON_HUP		((long)-2)
 
-static inline long hypervisor_con_getchar(long *status)
-{
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
-	register unsigned long arg1 asm("%o1");
-
-	func = HV_FAST_CONS_GETCHAR;
-	arg0 = 0;
-	arg1 = 0;
-	__asm__ __volatile__("ta	%6"
-			     : "=&r" (func), "=&r" (arg0), "=&r" (arg1)
-			     : "0" (func), "1" (arg0), "2" (arg1),
-			       "i" (HV_FAST_TRAP));
+#define IGNORE_BREAK	0x1
+#define IGNORE_ALL	0x2
 
-	*status = arg0;
+static char *con_write_page;
+static char *con_read_page;
 
-	return (long) arg1;
-}
+static int hung_up = 0;
 
-static inline long hypervisor_con_putchar(long ch)
+static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit)
 {
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
+	while (!uart_circ_empty(xmit)) {
+		long status = sun4v_con_putchar(xmit->buf[xmit->tail]);
 
-	func = HV_FAST_CONS_PUTCHAR;
-	arg0 = ch;
-	__asm__ __volatile__("ta	%4"
-			     : "=&r" (func), "=&r" (arg0)
-			     : "0" (func), "1" (arg0), "i" (HV_FAST_TRAP));
+		if (status != HV_EOK)
+			break;
 
-	return (long) arg0;
+		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+		port->icount.tx++;
+	}
 }
 
-#define IGNORE_BREAK	0x1
-#define IGNORE_ALL	0x2
+static void transmit_chars_write(struct uart_port *port, struct circ_buf *xmit)
+{
+	while (!uart_circ_empty(xmit)) {
+		unsigned long ra = __pa(xmit->buf + xmit->tail);
+		unsigned long len, status, sent;
 
-static int hung_up = 0;
+		len = CIRC_CNT_TO_END(xmit->head, xmit->tail,
+				      UART_XMIT_SIZE);
+		status = sun4v_con_write(ra, len, &sent);
+		if (status != HV_EOK)
+			break;
+		xmit->tail = (xmit->tail + sent) & (UART_XMIT_SIZE - 1);
+		port->icount.tx += sent;
+	}
+}
 
-static struct tty_struct *receive_chars(struct uart_port *port)
+static int receive_chars_getchar(struct uart_port *port, struct tty_struct *tty)
 {
-	struct tty_struct *tty = NULL;
 	int saw_console_brk = 0;
 	int limit = 10000;
 
-	if (port->info != NULL)		/* Unopened serial console */
-		tty = port->info->tty;
-
 	while (limit-- > 0) {
 		long status;
-		long c = hypervisor_con_getchar(&status);
-		unsigned char flag;
+		long c = sun4v_con_getchar(&status);
 
 		if (status == HV_EWOULDBLOCK)
 			break;
@@ -110,27 +104,90 @@ static struct tty_struct *receive_chars(struct uart_port *port)
 			continue;
 		}
 
-		flag = TTY_NORMAL;
 		port->icount.rx++;
-		if (c == CON_BREAK) {
-			port->icount.brk++;
-			if (uart_handle_break(port))
-				continue;
-			flag = TTY_BREAK;
-		}
 
 		if (uart_handle_sysrq_char(port, c))
 			continue;
 
-		if ((port->ignore_status_mask & IGNORE_ALL) ||
-		    ((port->ignore_status_mask & IGNORE_BREAK) &&
-		     (c == CON_BREAK)))
+		tty_insert_flip_char(tty, c, TTY_NORMAL);
+	}
+
+	return saw_console_brk;
+}
+
+static int receive_chars_read(struct uart_port *port, struct tty_struct *tty)
+{
+	int saw_console_brk = 0;
+	int limit = 10000;
+
+	while (limit-- > 0) {
+		unsigned long ra = __pa(con_read_page);
+		unsigned long bytes_read, i;
+		long stat = sun4v_con_read(ra, PAGE_SIZE, &bytes_read);
+
+		if (stat != HV_EOK) {
+			bytes_read = 0;
+
+			if (stat == CON_BREAK) {
+				if (uart_handle_break(port))
+					continue;
+				saw_console_brk = 1;
+				*con_read_page = 0;
+				bytes_read = 1;
+			} else if (stat == CON_HUP) {
+				hung_up = 1;
+				uart_handle_dcd_change(port, 0);
+				continue;
+			} else {
+				/* HV_EWOULDBLOCK, etc.  */
+				break;
+			}
+		}
+
+		if (hung_up) {
+			hung_up = 0;
+			uart_handle_dcd_change(port, 1);
+		}
+
+		for (i = 0; i < bytes_read; i++)
+			uart_handle_sysrq_char(port, con_read_page[i]);
+
+		if (tty == NULL)
 			continue;
 
-		tty_insert_flip_char(tty, c, flag);
+		port->icount.rx += bytes_read;
+
+		tty_insert_flip_string(tty, con_read_page, bytes_read);
 	}
 
-	if (saw_console_brk)
+	return saw_console_brk;
+}
+
+struct sunhv_ops {
+	void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit);
+	int (*receive_chars)(struct uart_port *port, struct tty_struct *tty);
+};
+
+static struct sunhv_ops bychar_ops = {
+	.transmit_chars = transmit_chars_putchar,
+	.receive_chars = receive_chars_getchar,
+};
+
+static struct sunhv_ops bywrite_ops = {
+	.transmit_chars = transmit_chars_write,
+	.receive_chars = receive_chars_read,
+};
+
+static struct sunhv_ops *sunhv_ops = &bychar_ops;
+
+static struct tty_struct *receive_chars(struct uart_port *port)
+{
+	struct tty_struct *tty = NULL;
+
+	if (port->info != NULL)		/* Unopened serial console */
+		tty = port->info->tty;
+
+	if (sunhv_ops->receive_chars(port, tty))
 		sun_do_break();
 
 	return tty;
@@ -147,15 +204,7 @@ static void transmit_chars(struct uart_port *port)
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port))
 		return;
 
-	while (!uart_circ_empty(xmit)) {
-		long status = hypervisor_con_putchar(xmit->buf[xmit->tail]);
-
-		if (status != HV_EOK)
-			break;
-
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-	}
+	sunhv_ops->transmit_chars(port, xmit);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);
@@ -212,7 +261,7 @@ static void sunhv_start_tx(struct uart_port *port)
 	struct circ_buf *xmit = &port->info->xmit;
 
 	while (!uart_circ_empty(xmit)) {
-		long status = hypervisor_con_putchar(xmit->buf[xmit->tail]);
+		long status = sun4v_con_putchar(xmit->buf[xmit->tail]);
 
 		if (status != HV_EOK)
 			break;
@@ -231,9 +280,10 @@ static void sunhv_send_xchar(struct uart_port *port, char ch)
 	spin_lock_irqsave(&port->lock, flags);
 
 	while (limit-- > 0) {
-		long status = hypervisor_con_putchar(ch);
+		long status = sun4v_con_putchar(ch);
 		if (status == HV_EOK)
 			break;
+		udelay(1);
 	}
 
 	spin_unlock_irqrestore(&port->lock, flags);
@@ -254,15 +304,15 @@ static void sunhv_break_ctl(struct uart_port *port, int break_state)
 {
 	if (break_state) {
 		unsigned long flags;
-		int limit = 1000000;
+		int limit = 10000;
 
 		spin_lock_irqsave(&port->lock, flags);
 
 		while (limit-- > 0) {
-			long status = hypervisor_con_putchar(CON_BREAK);
+			long status = sun4v_con_putchar(CON_BREAK);
 			if (status == HV_EOK)
 				break;
-			udelay(2);
+			udelay(1);
 		}
 
 		spin_unlock_irqrestore(&port->lock, flags);
@@ -359,38 +409,99 @@ static struct uart_driver sunhv_reg = {
 
 static struct uart_port *sunhv_port;
 
-static inline void sunhv_console_putchar(struct uart_port *port, char c)
+/* Copy 's' into the con_write_page, decoding "\n" into
+ * "\r\n" along the way.  We have to return two lengths
+ * because the caller needs to know how much to advance
+ * 's' and also how many bytes to output via con_write_page.
+ */
+static int fill_con_write_page(const char *s, unsigned int n,
+			       unsigned long *page_bytes)
+{
+	const char *orig_s = s;
+	char *p = con_write_page;
+	int left = PAGE_SIZE;
+
+	while (n--) {
+		if (*s == '\n') {
+			if (left < 2)
+				break;
+			*p++ = '\r';
+			left--;
+		} else if (left < 1)
+			break;
+		*p++ = *s++;
+		left--;
+	}
+	*page_bytes = p - con_write_page;
+	return s - orig_s;
+}
+
+static void sunhv_console_write_paged(struct console *con, const char *s, unsigned n)
 {
+	struct uart_port *port = sunhv_port;
 	unsigned long flags;
-	int limit = 1000000;
 
 	spin_lock_irqsave(&port->lock, flags);
+	while (n > 0) {
+		unsigned long ra = __pa(con_write_page);
+		unsigned long page_bytes;
+		unsigned int cpy = fill_con_write_page(s, n,
+						       &page_bytes);
+
+		n -= cpy;
+		s += cpy;
+		while (page_bytes > 0) {
+			unsigned long written;
+			int limit = 1000000;
+
+			while (limit--) {
+				unsigned long stat;
+
+				stat = sun4v_con_write(ra, page_bytes,
+						       &written);
+				if (stat == HV_EOK)
+					break;
+				udelay(1);
+			}
+			if (limit <= 0)
+				break;
+			page_bytes -= written;
+			ra += written;
+		}
+	}
+	spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static inline void sunhv_console_putchar(struct uart_port *port, char c)
+{
+	int limit = 1000000;
 
 	while (limit-- > 0) {
-		long status = hypervisor_con_putchar(c);
+		long status = sun4v_con_putchar(c);
 		if (status == HV_EOK)
 			break;
-		udelay(2);
+		udelay(1);
 	}
-
-	spin_unlock_irqrestore(&port->lock, flags);
 }
 
-static void sunhv_console_write(struct console *con, const char *s, unsigned n)
+static void sunhv_console_write_bychar(struct console *con, const char *s, unsigned n)
 {
 	struct uart_port *port = sunhv_port;
+	unsigned long flags;
 	int i;
 
+	spin_lock_irqsave(&port->lock, flags);
 	for (i = 0; i < n; i++) {
 		if (*s == '\n')
 			sunhv_console_putchar(port, '\r');
 		sunhv_console_putchar(port, *s++);
 	}
+	spin_unlock_irqrestore(&port->lock, flags);
 }
 
 static struct console sunhv_console = {
 	.name	=	"ttyHV",
-	.write	=	sunhv_console_write,
+	.write	=	sunhv_console_write_bychar,
 	.device	=	uart_console_device,
 	.flags	=	CON_PRINTBUFFER,
 	.index	=	-1,
@@ -410,6 +521,7 @@ static inline struct console *SUNHV_CONSOLE(void)
 static int __devinit hv_probe(struct of_device *op, const struct of_device_id *match)
 {
 	struct uart_port *port;
+	unsigned long minor;
 	int err;
 
 	if (op->irqs[0] == 0xffffffff)
@@ -419,6 +531,22 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m
 	if (unlikely(!port))
 		return -ENOMEM;
 
+	minor = 1;
+	if (sun4v_hvapi_register(HV_GRP_CORE, 1, &minor) == 0 &&
+	    minor >= 1) {
+		err = -ENOMEM;
+		con_write_page = kzalloc(PAGE_SIZE, GFP_KERNEL);
+		if (!con_write_page)
+			goto out_free_port;
+
+		con_read_page = kzalloc(PAGE_SIZE, GFP_KERNEL);
+		if (!con_read_page)
+			goto out_free_con_write_page;
+
+		sunhv_console.write = sunhv_console_write_paged;
+		sunhv_ops = &bywrite_ops;
+	}
+
 	sunhv_port = port;
 
 	port->line = 0;
@@ -437,7 +565,7 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m
 
 	err = uart_register_driver(&sunhv_reg);
 	if (err)
-		goto out_free_port;
+		goto out_free_con_read_page;
 
 	sunhv_reg.tty_driver->name_base = sunhv_reg.minor - 64;
 	sunserial_current_minor += 1;
@@ -463,6 +591,12 @@ out_unregister_driver:
 	sunserial_current_minor -= 1;
 	uart_unregister_driver(&sunhv_reg);
 
+out_free_con_read_page:
+	kfree(con_read_page);
+
+out_free_con_write_page:
+	kfree(con_write_page);
+
 out_free_port:
 	kfree(port);
 	sunhv_port = NULL;
diff --git a/include/asm-sparc64/hypervisor.h b/include/asm-sparc64/hypervisor.h
index 612bf319753f..a5558c87556d 100644
--- a/include/asm-sparc64/hypervisor.h
+++ b/include/asm-sparc64/hypervisor.h
@@ -940,6 +940,54 @@ struct hv_fault_status {
  */
 #define HV_FAST_CONS_PUTCHAR		0x61
 
+/* con_read()
+ * TRAP:	HV_FAST_TRAP
+ * FUNCTION:	HV_FAST_CONS_READ
+ * ARG0:	buffer real address
+ * ARG1:	buffer size in bytes
+ * RET0:	status
+ * RET1:	bytes read or BREAK or HUP
+ * ERRORS:	EWOULDBLOCK	No character available.
+ *
+ * Reads characters into a buffer from the console device.  If no
+ * character is available then an EWOULDBLOCK error is returned.
+ * If a character is available, then the returned status is EOK
+ * and the number of bytes read into the given buffer is provided
+ * in RET1.
+ *
+ * A virtual BREAK is represented by the 64-bit RET1 value -1.
+ *
+ * A virtual HUP signal is represented by the 64-bit RET1 value -2.
+ *
+ * If BREAK or HUP are indicated, no bytes were read into buffer.
+ */
+#define HV_FAST_CONS_READ		0x62
+
+/* con_write()
+ * TRAP:	HV_FAST_TRAP
+ * FUNCTION:	HV_FAST_CONS_WRITE
+ * ARG0:	buffer real address
+ * ARG1:	buffer size in bytes
+ * RET0:	status
+ * RET1:	bytes written
+ * ERRORS:	EWOULDBLOCK	Output buffer currently full, would block
+ *
+ * Send a characters in buffer to the console device.  Breaks must be
+ * sent using con_putchar().
+ */
+#define HV_FAST_CONS_WRITE		0x63
+
+#ifndef __ASSEMBLY__
+extern long sun4v_con_getchar(long *status);
+extern long sun4v_con_putchar(long c);
+extern long sun4v_con_read(unsigned long buffer,
+			   unsigned long size,
+			   unsigned long *bytes_read);
+extern unsigned long sun4v_con_write(unsigned long buffer,
+				     unsigned long size,
+				     unsigned long *bytes_written);
+#endif
+
 /* Trap trace services.
  *
  * The hypervisor provides a trap tracing capability for privileged
@@ -2121,8 +2169,41 @@ struct hv_mmu_statistics {
 #define HV_FAST_MMUSTAT_INFO		0x103
 
 /* Function numbers for HV_CORE_TRAP.  */
-#define HV_CORE_VER			0x00
+#define HV_CORE_SET_VER			0x00
 #define HV_CORE_PUTCHAR			0x01
 #define HV_CORE_EXIT			0x02
+#define HV_CORE_GET_VER			0x03
+
+/* Hypervisor API groups for use with HV_CORE_SET_VER and
+ * HV_CORE_GET_VER.
+ */
+#define HV_GRP_SUN4V			0x0000
+#define HV_GRP_CORE			0x0001
+#define HV_GRP_INTR			0x0002
+#define HV_GRP_SOFT_STATE		0x0003
+#define HV_GRP_PCI			0x0100
+#define HV_GRP_LDOM			0x0101
+#define HV_GRP_SVC_CHAN			0x0102
+#define HV_GRP_NCS			0x0103
+#define HV_GRP_NIAG_PERF		0x0200
+#define HV_GRP_FIRE_PERF		0x0201
+#define HV_GRP_DIAG			0x0300
+
+#ifndef __ASSEMBLY__
+extern unsigned long sun4v_get_version(unsigned long group,
+				       unsigned long *major,
+				       unsigned long *minor);
+extern unsigned long sun4v_set_version(unsigned long group,
+				       unsigned long major,
+				       unsigned long minor,
+				       unsigned long *actual_minor);
+
+extern int sun4v_hvapi_register(unsigned long group, unsigned long major,
+				unsigned long *minor);
+extern void sun4v_hvapi_unregister(unsigned long group);
+extern int sun4v_hvapi_get(unsigned long group,
+			   unsigned long *major,
+			   unsigned long *minor);
+#endif
 
 #endif /* !(_SPARC64_HYPERVISOR_H) */
-- 
cgit v1.2.3


From 6ddcd3b0201a7ad72294347636d2b4028ddbd95d Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Tue, 15 May 2007 03:28:15 +0900
Subject: libata: during revalidation, check n_sectors after device is
 configured

Device might be resized during ata_dev_configure() due to HPA or
(later) ACPI _GTF.  Currently it's worked around by caching n_sectors
before turning off HPA.  The cached original size is overwritten if
the device is reconfigured without being hardreset - which always
happens after configuring trasnfer mode.  If the device gets hardreset
for some reason after that, revalidation fails with -ENODEV.

This patch makes size checking more robust by moving n_sectors check
from ata_dev_reread_id() to ata_dev_revalidate() after the device is
fully configured.  No matter what happens during configuration, a
device must have the same n_sectors after fully configured to be
treated as the same device.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/ata/libata-core.c | 33 +++++++++++++++------------------
 include/linux/libata.h    |  1 -
 2 files changed, 15 insertions(+), 19 deletions(-)

(limited to 'include')

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 6f266c8179ec..d5939e659cbb 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1919,7 +1919,6 @@ int ata_dev_configure(struct ata_device *dev)
 			snprintf(revbuf, 7, "ATA-%d",  ata_id_major_version(id));
 
 		dev->n_sectors = ata_id_n_sectors(id);
-		dev->n_sectors_boot = dev->n_sectors;
 
 		/* SCSI only uses 4-char revisions, dump full 8 chars from ATA */
 		ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV,
@@ -3632,7 +3631,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
 	const u16 *old_id = dev->id;
 	unsigned char model[2][ATA_ID_PROD_LEN + 1];
 	unsigned char serial[2][ATA_ID_SERNO_LEN + 1];
-	u64 new_n_sectors;
 
 	if (dev->class != new_class) {
 		ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n",
@@ -3644,7 +3642,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
 	ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1]));
 	ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0]));
 	ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1]));
-	new_n_sectors = ata_id_n_sectors(new_id);
 
 	if (strcmp(model[0], model[1])) {
 		ata_dev_printk(dev, KERN_INFO, "model number mismatch "
@@ -3658,19 +3655,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
 		return 0;
 	}
 
-	if (dev->class == ATA_DEV_ATA && dev->n_sectors != new_n_sectors) {
-		ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
-			       "%llu != %llu\n",
-			       (unsigned long long)dev->n_sectors,
-			       (unsigned long long)new_n_sectors);
-		/* Are we the boot time size - if so we appear to be the
-		   same disk at this point and our HPA got reapplied */
-		if (ata_ignore_hpa && dev->n_sectors_boot == new_n_sectors 
-		    && ata_id_hpa_enabled(new_id))
-			return 1;
-		return 0;
-	}
-
 	return 1;
 }
 
@@ -3723,6 +3707,7 @@ int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags)
  */
 int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
 {
+	u64 n_sectors = dev->n_sectors;
 	int rc;
 
 	if (!ata_dev_enabled(dev))
@@ -3735,8 +3720,20 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
 
 	/* configure device according to the new ID */
 	rc = ata_dev_configure(dev);
-	if (rc == 0)
-		return 0;
+	if (rc)
+		goto fail;
+
+	/* verify n_sectors hasn't changed */
+	if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) {
+		ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
+			       "%llu != %llu\n",
+			       (unsigned long long)n_sectors,
+			       (unsigned long long)dev->n_sectors);
+		rc = -ENODEV;
+		goto fail;
+	}
+
+	return 0;
 
  fail:
 	ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 27d936279574..b38a0f9bc9f7 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -431,7 +431,6 @@ struct ata_device {
 	struct scsi_device	*sdev;		/* attached SCSI device */
 	/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
 	u64			n_sectors;	/* size of device, if ATA */
-	u64			n_sectors_boot;	/* size of ATA device at startup */
 	unsigned int		class;		/* ATA_DEV_xxx */
 	u16			id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
 	u8			pio_mode;
-- 
cgit v1.2.3


From 3cadbcc09891b8544203f211dac13f9cc4e6832a Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Tue, 15 May 2007 03:28:15 +0900
Subject: libata-acpi: add ATA_FLAG_ACPI_SATA port flag

Whether a controller needs IDE or SATA ACPI hierarchy is determined by
the programming interface of the controller not by whether the
controller is SATA or PATA, or it supports slave device or not.  This
patch adds ATA_FLAG_ACPI_SATA port flags which tells libata-acpi that
the port needs SATA ACPI nodes, and sets the flag for ahci and
sata_sil24.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/ata/ahci.c        |  3 ++-
 drivers/ata/libata-acpi.c | 10 +++++-----
 drivers/ata/sata_sil24.c  |  3 ++-
 include/linux/libata.h    |  1 +
 4 files changed, 10 insertions(+), 7 deletions(-)

(limited to 'include')

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 1ae443d7ab92..e00e1b913d28 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -173,7 +173,8 @@ enum {
 
 	AHCI_FLAG_COMMON		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 					  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
-					  ATA_FLAG_SKIP_D2H_BSY,
+					  ATA_FLAG_SKIP_D2H_BSY |
+					  ATA_FLAG_ACPI_SATA,
 };
 
 struct ahci_cmd_hdr {
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index ed4138e24b0c..02236739b40f 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -321,7 +321,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length,
 
 	/* Don't continue if device has no _ADR method.
 	 * _GTF is intended for known motherboard devices. */
-	if (!(ap->cbl == ATA_CBL_SATA)) {
+	if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
 		err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn);
 		if (err < 0) {
 			if (ata_msg_probe(ap))
@@ -343,7 +343,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length,
 
 	/* Get this drive's _ADR info. if not already known. */
 	if (!dev->obj_handle) {
-		if (!(ap->cbl == ATA_CBL_SATA)) {
+		if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
 			/* get child objects of dev_handle == channel objects,
 	 		 * + _their_ children == drive objects */
 			/* channel is ap->port_no */
@@ -528,7 +528,7 @@ static int do_drive_set_taskfiles(struct ata_device *dev,
 		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
 			       __FUNCTION__, ap->port_no);
 
-	if (libata_noacpi || !(ap->cbl == ATA_CBL_SATA))
+	if (libata_noacpi || !(ap->flags & ATA_FLAG_ACPI_SATA))
 		return 0;
 
 	if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED))
@@ -578,7 +578,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
 	 * we should not run GTF on PATA devices since some
 	 * PATA require execution of GTM/STM before GTF.
 	 */
-	if (!(ap->cbl == ATA_CBL_SATA))
+	if (!(ap->flags & ATA_FLAG_ACPI_SATA))
 		return 0;
 
 	for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
@@ -641,7 +641,7 @@ int ata_acpi_push_id(struct ata_device *dev)
 			       __FUNCTION__, dev->devno, ap->port_no);
 
 	/* Don't continue if not a SATA device. */
-	if (!(ap->cbl == ATA_CBL_SATA)) {
+	if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
 		if (ata_msg_probe(ap))
 			ata_dev_printk(dev, KERN_DEBUG,
 				"%s: Not a SATA device\n", __FUNCTION__);
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index a69d78cd8e9b..0cb6618935b1 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -237,7 +237,8 @@ enum {
 	/* host flags */
 	SIL24_COMMON_FLAGS	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
-				  ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY,
+				  ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY |
+				  ATA_FLAG_ACPI_SATA,
 	SIL24_FLAG_PCIX_IRQ_WOC	= (1 << 24), /* IRQ loss errata on PCI-X */
 
 	IRQ_STAT_4PORTS		= 0xf,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b38a0f9bc9f7..9b2122db30ff 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -173,6 +173,7 @@ enum {
 	ATA_FLAG_SETXFER_POLLING= (1 << 14), /* use polling for SETXFER */
 	ATA_FLAG_IGN_SIMPLEX	= (1 << 15), /* ignore SIMPLEX */
 	ATA_FLAG_NO_IORDY	= (1 << 16), /* controller lacks iordy */
+	ATA_FLAG_ACPI_SATA	= (1 << 17), /* need native SATA ACPI layout */
 
 	/* The following flag belongs to ap->pflags but is kept in
 	 * ap->flags because it's referenced in many LLDs and will be
-- 
cgit v1.2.3


From 13b8d09f5de0aaa3153bbccc98baf247387823dc Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Tue, 15 May 2007 12:29:22 +0200
Subject: libata: track spindown status and skip spindown_compat if possible

Our assumption that most distros issue STANDBYNOW seems wrong.  The
upstream sysvinit and thus many distros including gentoo and opensuse
don't take any action for libata disks on spindown.  We can skip
compat handling for these distros so that they don't need to update
anything to take advantage of kernel-side shutdown.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/ata/libata-scsi.c | 9 +++++++++
 include/linux/libata.h    | 1 +
 2 files changed, 10 insertions(+)

(limited to 'include')

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 07b5a3d4ed21..b6a1de8fad5b 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -967,6 +967,7 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
 		 * for more info.
 		 */
 		if (ata_spindown_compat &&
+		    (qc->dev->flags & ATA_DFLAG_SPUNDOWN) &&
 		    (system_state == SYSTEM_HALT ||
 		     system_state == SYSTEM_POWER_OFF)) {
 			static unsigned long warned = 0;
@@ -1394,6 +1395,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
 		}
 	}
 
+	/* XXX: track spindown state for spindown_compat */
+	if (unlikely(qc->tf.command == ATA_CMD_STANDBY ||
+		     qc->tf.command == ATA_CMD_STANDBYNOW1))
+		qc->dev->flags |= ATA_DFLAG_SPUNDOWN;
+	else if (likely(system_state != SYSTEM_HALT &&
+			system_state != SYSTEM_POWER_OFF))
+		qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN;
+
 	if (need_sense && !ap->ops->error_handler)
 		ata_dump_status(ap->print_id, &qc->result_tf);
 
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 9b2122db30ff..666592ef0b25 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -140,6 +140,7 @@ enum {
 
 	ATA_DFLAG_PIO		= (1 << 8), /* device limited to PIO mode */
 	ATA_DFLAG_NCQ_OFF	= (1 << 9), /* device limited to non-NCQ mode */
+	ATA_DFLAG_SPUNDOWN	= (1 << 10), /* XXX: for spindown_compat */
 	ATA_DFLAG_INIT_MASK	= (1 << 16) - 1,
 
 	ATA_DFLAG_DETACH	= (1 << 16),
-- 
cgit v1.2.3


From a68660e0c63d8f7ab8725f9e771119c08e9f953b Mon Sep 17 00:00:00 2001
From: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Date: Thu, 10 May 2007 19:27:27 +0200
Subject: [ALSA] ASoC AC97 device reg bugfix

This patch fixes a bug whereby AC97 bus device data was being clobbered
when AC97 codecs using the generic ac97_codec.c driver were being
registered. Codecs that didn't use the generic driver were unaffected
(e.g. WM9712, WM9713).
Changes:-
 o Add new AC97 codec class for custom (or need bus dev registration)
AC97 codecs.
 o Only register/deregister this custom codec device with the AC97 bus.
The generic AC97 driver already does this for generic codec devices.
This may be related to bug #3038 :-
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3038

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
---
 include/sound/soc.h       |  4 +++-
 sound/soc/codecs/ac97.c   |  1 +
 sound/soc/codecs/wm9712.c |  1 +
 sound/soc/soc-core.c      | 18 +++++++++++++++---
 4 files changed, 20 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/sound/soc.h b/include/sound/soc.h
index b1dc364b8f74..db6edba8ef08 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -22,7 +22,7 @@
 #include <sound/control.h>
 #include <sound/ac97_codec.h>
 
-#define SND_SOC_VERSION "0.13.0"
+#define SND_SOC_VERSION "0.13.1"
 
 /*
  * Convenience kcontrol builders
@@ -83,6 +83,7 @@
 #define SND_SOC_DAI_AC97	0x1
 #define SND_SOC_DAI_I2S		0x2
 #define SND_SOC_DAI_PCM		0x4
+#define SND_SOC_DAI_AC97_BUS	0x8	/* for custom i.e. non ac97_codec.c */
 
 /*
  * DAI hardware audio formats
@@ -278,6 +279,7 @@ struct snd_soc_cpu_ops {
 struct snd_soc_codec_dai {
 	char *name;
 	int id;
+	unsigned char type;
 
 	/* DAI capabilities */
 	struct snd_soc_pcm_stream playback;
diff --git a/sound/soc/codecs/ac97.c b/sound/soc/codecs/ac97.c
index f3b3b9efbb61..0b8a6f8b3668 100644
--- a/sound/soc/codecs/ac97.c
+++ b/sound/soc/codecs/ac97.c
@@ -45,6 +45,7 @@ static int ac97_prepare(struct snd_pcm_substream *substream)
 
 struct snd_soc_codec_dai ac97_dai = {
 	.name = "AC97 HiFi",
+	.type = SND_SOC_DAI_AC97,
 	.playback = {
 		.stream_name = "AC97 Playback",
 		.channels_min = 1,
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 264413a00cac..986b5d59cefa 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -544,6 +544,7 @@ static int ac97_aux_prepare(struct snd_pcm_substream *substream)
 struct snd_soc_codec_dai wm9712_dai[] = {
 {
 	.name = "AC97 HiFi",
+	.type = SND_SOC_DAI_AC97_BUS,
 	.playback = {
 		.stream_name = "HiFi Playback",
 		.channels_min = 1,
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 36519aef55d9..92d5d917b73b 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -116,6 +116,7 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
 static inline const char* get_dai_name(int type)
 {
 	switch(type) {
+	case SND_SOC_DAI_AC97_BUS:
 	case SND_SOC_DAI_AC97:
 		return "AC97";
 	case SND_SOC_DAI_I2S:
@@ -1099,7 +1100,8 @@ int snd_soc_register_card(struct snd_soc_device *socdev)
 				continue;
 			}
 		}
-		if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97)
+		if (socdev->machine->dai_link[i].codec_dai->type == 
+			SND_SOC_DAI_AC97_BUS)
 			ac97 = 1;
 	}
 	snprintf(codec->card->shortname, sizeof(codec->card->shortname),
@@ -1148,11 +1150,21 @@ EXPORT_SYMBOL_GPL(snd_soc_register_card);
 void snd_soc_free_pcms(struct snd_soc_device *socdev)
 {
 	struct snd_soc_codec *codec = socdev->codec;
+#ifdef CONFIG_SND_SOC_AC97_BUS
+	struct snd_soc_codec_dai *codec_dai;
+	int i;
+#endif
 
 	mutex_lock(&codec->mutex);
 #ifdef CONFIG_SND_SOC_AC97_BUS
-	if (codec->ac97)
-		soc_ac97_dev_unregister(codec);
+	for(i = 0; i < codec->num_dai; i++) {
+		codec_dai = &codec->dai[i];
+		if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) {
+			soc_ac97_dev_unregister(codec);
+			goto free_card;
+		}
+	}
+free_card:
 #endif
 
 	if (codec->card)
-- 
cgit v1.2.3


From 60af15f529d22a93805e74dd3c52b6f8134511d2 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@suse.cz>
Date: Wed, 16 May 2007 11:45:47 +0200
Subject: [ALSA] version 1.0.14rc4

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
---
 include/sound/version.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/sound/version.h b/include/sound/version.h
index e820f0e7bdd3..50ee4fd420fa 100644
--- a/include/sound/version.h
+++ b/include/sound/version.h
@@ -1,3 +1,3 @@
 /* include/version.h.  Generated by alsa/ksync script.  */
 #define CONFIG_SND_VERSION "1.0.14rc4"
-#define CONFIG_SND_DATE " (Wed May 09 09:51:39 2007 UTC)"
+#define CONFIG_SND_DATE " (Wed May 16 09:45:46 2007 UTC)"
-- 
cgit v1.2.3


From 576fe0bd7e52dce7afb6b9b2450744555b2eb53a Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 16 May 2007 14:52:19 +0200
Subject: [IA64] optimize pagefaults a little

Get rid of the notifier list and call the kprobes code directly
if compiled in.  This mirrors the changes that recently went
into powerpc, s390 and sparc64.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/kprobes.c |  9 +--------
 arch/ia64/mm/fault.c       | 41 ++++++++++++++---------------------------
 include/asm-ia64/kdebug.h  | 16 +++++++++++++---
 include/asm-ia64/kprobes.h |  1 +
 4 files changed, 29 insertions(+), 38 deletions(-)

(limited to 'include')

diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index be81fe42d80b..5bc46f151344 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -820,7 +820,7 @@ out:
 	return 1;
 }
 
-static int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
+int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -904,13 +904,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
 			if (post_kprobes_handler(args->regs))
 				ret = NOTIFY_STOP;
 		break;
-	case DIE_PAGE_FAULT:
-		/* kprobe_running() needs smp_processor_id() */
-		preempt_disable();
-		if (kprobe_running() &&
-			kprobes_fault_handler(args->regs, args->trapnr))
-			ret = NOTIFY_STOP;
-		preempt_enable();
 	default:
 		break;
 	}
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 21658e02116c..b87f785c2416 100644
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -19,36 +19,24 @@
 extern void die (char *, struct pt_regs *, long);
 
 #ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
-
-/* Hook to register for page fault notifications */
-int register_page_fault_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
-}
-
-int unregister_page_fault_notifier(struct notifier_block *nb)
+static inline int notify_page_fault(struct pt_regs *regs, int trap)
 {
-	return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
-}
+	int ret = 0;
+
+	if (!user_mode(regs)) {
+		/* kprobe_running() needs smp_processor_id() */
+		preempt_disable();
+		if (kprobe_running() && kprobes_fault_handler(regs, trap))
+			ret = 1;
+		preempt_enable();
+	}
 
-static inline int notify_page_fault(enum die_val val, const char *str,
-			struct pt_regs *regs, long err, int trap, int sig)
-{
-	struct die_args args = {
-		.regs = regs,
-		.str = str,
-		.err = err,
-		.trapnr = trap,
-		.signr = sig
-	};
-	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+	return ret;
 }
 #else
-static inline int notify_page_fault(enum die_val val, const char *str,
-			struct pt_regs *regs, long err, int trap, int sig)
+static inline int notify_page_fault(struct pt_regs *regs, int trap)
 {
-	return NOTIFY_DONE;
+	return 0;
 }
 #endif
 
@@ -117,8 +105,7 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 	/*
 	 * This is to handle the kprobes on user space access instructions
 	 */
-	if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, code, TRAP_BRKPT,
-					SIGSEGV) == NOTIFY_STOP)
+	if (notify_page_fault(regs, TRAP_BRKPT))
 		return;
 
 	down_read(&mm->mmap_sem);
diff --git a/include/asm-ia64/kdebug.h b/include/asm-ia64/kdebug.h
index ba211e011a1d..320cd8e754ea 100644
--- a/include/asm-ia64/kdebug.h
+++ b/include/asm-ia64/kdebug.h
@@ -28,14 +28,24 @@
  */
 #include <linux/notifier.h>
 
-extern int register_page_fault_notifier(struct notifier_block *);
-extern int unregister_page_fault_notifier(struct notifier_block *);
+/*
+ * These are only here because kprobes.c wants them to implement a
+ * blatant layering violation.  Will hopefully go away soon once all
+ * architectures are updated.
+ */
+static inline int register_page_fault_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+static inline int unregister_page_fault_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
 
 enum die_val {
 	DIE_BREAK = 1,
 	DIE_FAULT,
 	DIE_OOPS,
-	DIE_PAGE_FAULT,
 	DIE_MACHINE_HALT,
 	DIE_MACHINE_RESTART,
 	DIE_MCA_MONARCH_ENTER,
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 2abc98b336f3..6382e52ec227 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -120,6 +120,7 @@ struct arch_specific_insn {
 	unsigned short slot;
 };
 
+extern int kprobes_fault_handler(struct pt_regs *regs, int trapnr);
 extern int kprobe_exceptions_notify(struct notifier_block *self,
 				    unsigned long val, void *data);
 
-- 
cgit v1.2.3


From 1abd727ed7abf5c19e7d1760671475cbecbccb0e Mon Sep 17 00:00:00 2001
From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 15 May 2007 23:57:03 -0700
Subject: SLUB: It is legit to allocate a slab of the maximum permitted size

Sorry I screwed up the comparison. It is only an error if we attempt
to allocate a slab larger than the maximum allowed size.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/slub_def.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index fd6627e2d115..c6c1f4a120e3 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -88,7 +88,7 @@ static inline int kmalloc_index(int size)
 	 */
 	WARN_ON_ONCE(size == 0);
 
-	if (size >= (1 << KMALLOC_SHIFT_HIGH))
+	if (size > (1 << KMALLOC_SHIFT_HIGH))
 		return -1;
 
 	if (size > 64 && size <= 96)
-- 
cgit v1.2.3