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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-06-06 13:13:09 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-06-06 13:13:09 -0700 |
commit | 16d72dd4891fecc1e1bf7ca193bb7d5b9804c038 (patch) | |
tree | ba1b45b83cb5dc674f4c2f601b9fbe3a92572414 /arch | |
parent | ae8766042beee814c9e16e9ae1e84cd6eaa7ffaa (diff) | |
parent | 527a1d1ede98479bf90c31a64822107ac7e6d276 (diff) | |
download | lwn-16d72dd4891fecc1e1bf7ca193bb7d5b9804c038.tar.gz lwn-16d72dd4891fecc1e1bf7ca193bb7d5b9804c038.zip |
Merge branch 'parisc-5.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
- Fix crashes when accessing PCI devices on some machines like C240 and
J5000. The crashes were triggered because we replaced cache flushes
by nops in the alternative coding where we shouldn't for some
machines.
- Dave fixed a race in the usage of the sr1 space register when used to
load the coherence index.
- Use the hardware lpa instruction to to load the physical address of
kernel virtual addresses in the iommu driver code.
- The kernel may fail to link when CONFIG_MLONGCALLS isn't set. Solve
that by rearranging functions in the final vmlinux executeable.
- Some defconfig cleanups and removal of compiler warnings.
* 'parisc-5.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix crash due alternative coding for NP iopdir_fdc bit
parisc: Use lpa instruction to load physical addresses in driver code
parisc: configs: Remove useless UEVENT_HELPER_PATH
parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
parisc: Fix compiler warnings in float emulation code
parisc/slab: cleanup after /proc/slab_allocators removal
parisc: Allow building 64-bit kernel without -mlong-calls compiler option
parisc: Kconfig: remove ARCH_DISCARD_MEMBLOCK
Diffstat (limited to 'arch')
-rw-r--r-- | arch/parisc/Kconfig | 4 | ||||
-rw-r--r-- | arch/parisc/configs/712_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/a500_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/b180_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/c3000_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/c8000_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/default_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/configs/generic-32bit_defconfig | 1 | ||||
-rw-r--r-- | arch/parisc/include/asm/special_insns.h | 24 | ||||
-rw-r--r-- | arch/parisc/kernel/alternative.c | 3 | ||||
-rw-r--r-- | arch/parisc/kernel/vmlinux.lds.S | 21 | ||||
-rw-r--r-- | arch/parisc/math-emu/cnv_float.h | 8 |
12 files changed, 46 insertions, 21 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 09407ed1aacd..4860efa91d7b 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -36,7 +36,6 @@ config PARISC select GENERIC_STRNCPY_FROM_USER select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_EXCEPTION_TRACE - select ARCH_DISCARD_MEMBLOCK select HAVE_MOD_ARCH_SPECIFIC select VIRT_TO_BUS select MODULES_USE_ELF_RELA @@ -195,7 +194,8 @@ config PREFETCH config MLONGCALLS bool "Enable the -mlong-calls compiler option for big kernels" - default y + default y if !MODULES || UBSAN || FTRACE + default n depends on PA8X00 help If you configure the kernel to include many drivers built-in instead diff --git a/arch/parisc/configs/712_defconfig b/arch/parisc/configs/712_defconfig index ccc109761f44..d3e3d94e90c3 100644 --- a/arch/parisc/configs/712_defconfig +++ b/arch/parisc/configs/712_defconfig @@ -34,7 +34,6 @@ CONFIG_INET_DIAG=m CONFIG_NETFILTER=y CONFIG_LLC2=m CONFIG_NET_PKTGEN=m -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/configs/a500_defconfig b/arch/parisc/configs/a500_defconfig index 5acb93dcaabf..a8859496b0b9 100644 --- a/arch/parisc/configs/a500_defconfig +++ b/arch/parisc/configs/a500_defconfig @@ -70,7 +70,6 @@ CONFIG_IP_DCCP=m # CONFIG_IP_DCCP_CCID3 is not set CONFIG_LLC2=m CONFIG_NET_PKTGEN=m -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/configs/b180_defconfig b/arch/parisc/configs/b180_defconfig index 83ffd161aec5..0cae9664bf67 100644 --- a/arch/parisc/configs/b180_defconfig +++ b/arch/parisc/configs/b180_defconfig @@ -24,7 +24,6 @@ CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_PNP=y CONFIG_IP_PNP_BOOTP=y -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set diff --git a/arch/parisc/configs/c3000_defconfig b/arch/parisc/configs/c3000_defconfig index 8d41a73bd71b..6c29b841735c 100644 --- a/arch/parisc/configs/c3000_defconfig +++ b/arch/parisc/configs/c3000_defconfig @@ -32,7 +32,6 @@ CONFIG_INET6_IPCOMP=m CONFIG_IPV6_TUNNEL=m CONFIG_NETFILTER=y CONFIG_NET_PKTGEN=m -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/configs/c8000_defconfig b/arch/parisc/configs/c8000_defconfig index 900b00084953..507f0644fcf8 100644 --- a/arch/parisc/configs/c8000_defconfig +++ b/arch/parisc/configs/c8000_defconfig @@ -57,7 +57,6 @@ CONFIG_IP_DCCP=m CONFIG_TIPC=m CONFIG_LLC2=m CONFIG_DNS_RESOLVER=y -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/configs/default_defconfig b/arch/parisc/configs/default_defconfig index 52c9050a7c5c..6a91cc2623e8 100644 --- a/arch/parisc/configs/default_defconfig +++ b/arch/parisc/configs/default_defconfig @@ -44,7 +44,6 @@ CONFIG_INET6_AH=y CONFIG_INET6_ESP=y CONFIG_INET6_IPCOMP=y CONFIG_LLC2=m -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/configs/generic-32bit_defconfig b/arch/parisc/configs/generic-32bit_defconfig index a8f9bbef0975..18b072a47a10 100644 --- a/arch/parisc/configs/generic-32bit_defconfig +++ b/arch/parisc/configs/generic-32bit_defconfig @@ -47,7 +47,6 @@ CONFIG_INET_ESP=m CONFIG_INET_DIAG=m CONFIG_LLC2=m # CONFIG_WIRELESS is not set -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h index 3d4dd68e181b..a303ae9a77f4 100644 --- a/arch/parisc/include/asm/special_insns.h +++ b/arch/parisc/include/asm/special_insns.h @@ -2,6 +2,30 @@ #ifndef __PARISC_SPECIAL_INSNS_H #define __PARISC_SPECIAL_INSNS_H +#define lpa(va) ({ \ + unsigned long pa; \ + __asm__ __volatile__( \ + "copy %%r0,%0\n\t" \ + "lpa %%r0(%1),%0" \ + : "=r" (pa) \ + : "r" (va) \ + : "memory" \ + ); \ + pa; \ +}) + +#define lpa_user(va) ({ \ + unsigned long pa; \ + __asm__ __volatile__( \ + "copy %%r0,%0\n\t" \ + "lpa %%r0(%%sr3,%1),%0" \ + : "=r" (pa) \ + : "r" (va) \ + : "memory" \ + ); \ + pa; \ +}) + #define mfctl(reg) ({ \ unsigned long cr; \ __asm__ __volatile__( \ diff --git a/arch/parisc/kernel/alternative.c b/arch/parisc/kernel/alternative.c index bf2274e01a96..ca1f5ca0540a 100644 --- a/arch/parisc/kernel/alternative.c +++ b/arch/parisc/kernel/alternative.c @@ -56,7 +56,8 @@ void __init_or_module apply_alternatives(struct alt_instr *start, * time IO-PDIR is changed in Ike/Astro. */ if ((cond & ALT_COND_NO_IOC_FDC) && - (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC)) + ((boot_cpu_data.cpu_type <= pcxw_) || + (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC))) continue; /* Want to replace pdtlb by a pdtlb,l instruction? */ diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index c3b1b9c24ede..cd33b4feacb1 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -35,6 +35,15 @@ OUTPUT_FORMAT("elf64-hppa-linux") OUTPUT_ARCH(hppa:hppa2.0w) #endif +#define EXIT_TEXT_SECTIONS() .exit.text : { EXIT_TEXT } +#if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS) +#define MLONGCALL_KEEP(x) +#define MLONGCALL_DISCARD(x) x +#else +#define MLONGCALL_KEEP(x) x +#define MLONGCALL_DISCARD(x) +#endif + ENTRY(parisc_kernel_start) #ifndef CONFIG_64BIT jiffies = jiffies_64 + 4; @@ -47,15 +56,11 @@ SECTIONS __init_begin = .; HEAD_TEXT_SECTION - INIT_TEXT_SECTION(8) + MLONGCALL_DISCARD(INIT_TEXT_SECTION(8)) . = ALIGN(PAGE_SIZE); INIT_DATA_SECTION(PAGE_SIZE) - /* we have to discard exit text and such at runtime, not link time */ - .exit.text : - { - EXIT_TEXT - } + MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS()) .exit.data : { EXIT_DATA @@ -73,11 +78,12 @@ SECTIONS _text = .; /* Text and read-only data */ _stext = .; + MLONGCALL_KEEP(INIT_TEXT_SECTION(8)) .text ALIGN(PAGE_SIZE) : { TEXT_TEXT + LOCK_TEXT SCHED_TEXT CPUIDLE_TEXT - LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT SOFTIRQENTRY_TEXT @@ -92,6 +98,7 @@ SECTIONS *(.lock.text) /* out-of-line lock text */ *(.gnu.warning) } + MLONGCALL_KEEP(EXIT_TEXT_SECTIONS()) . = ALIGN(PAGE_SIZE); _etext = .; /* End of text section */ diff --git a/arch/parisc/math-emu/cnv_float.h b/arch/parisc/math-emu/cnv_float.h index bfcd834f42d0..ef783a383c5a 100644 --- a/arch/parisc/math-emu/cnv_float.h +++ b/arch/parisc/math-emu/cnv_float.h @@ -47,19 +47,19 @@ ((exponent < (SGL_P - 1)) ? \ (Sall(sgl_value) << (SGL_EXP_LENGTH + 1 + exponent)) : FALSE) -#define Int_isinexact_to_sgl(int_value) (int_value << 33 - SGL_EXP_LENGTH) +#define Int_isinexact_to_sgl(int_value) ((int_value << 33 - SGL_EXP_LENGTH) != 0) #define Sgl_roundnearest_from_int(int_value,sgl_value) \ if (int_value & 1<<(SGL_EXP_LENGTH - 2)) /* round bit */ \ - if ((int_value << 34 - SGL_EXP_LENGTH) || Slow(sgl_value)) \ + if (((int_value << 34 - SGL_EXP_LENGTH) != 0) || Slow(sgl_value)) \ Sall(sgl_value)++ #define Dint_isinexact_to_sgl(dint_valueA,dint_valueB) \ - ((Dintp1(dint_valueA) << 33 - SGL_EXP_LENGTH) || Dintp2(dint_valueB)) + (((Dintp1(dint_valueA) << 33 - SGL_EXP_LENGTH) != 0) || Dintp2(dint_valueB)) #define Sgl_roundnearest_from_dint(dint_valueA,dint_valueB,sgl_value) \ if (Dintp1(dint_valueA) & 1<<(SGL_EXP_LENGTH - 2)) \ - if ((Dintp1(dint_valueA) << 34 - SGL_EXP_LENGTH) || \ + if (((Dintp1(dint_valueA) << 34 - SGL_EXP_LENGTH) != 0) || \ Dintp2(dint_valueB) || Slow(sgl_value)) Sall(sgl_value)++ #define Dint_isinexact_to_dbl(dint_value) \ |