lwn.git/arch/powerpc, branch v3.14.35

axonram: Fix bug in direct_access

2015-03-06T22:43:30+00:00

commit 91117a20245b59f70b563523edbf998a62fc6383 upstream. The 'pfn' returned by axonram was completely bogus, and has been since 2008. Signed-off-by: Matthew Wilcox Reviewed-by: Jan Kara Reviewed-by: Mathieu Desnoyers Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman

powerpc/xmon: Fix another endiannes issue in RTAS call from xmon

2015-02-06T06:35:49+00:00

commit e6eb2eba494d6f99e69ca3c3748cd37a2544ab38 upstream. The commit 3b8a3c010969 ("powerpc/pseries: Fix endiannes issue in RTAS call from xmon") was fixing an endianness issue in the call made from xmon to RTAS. However, as Michael Ellerman noticed, this fix was not complete, the token value was not byte swapped. This lead to call an unexpected and most of the time unexisting RTAS function, which is silently ignored by RTAS. This fix addresses this hole. Reported-by: Michael Ellerman Signed-off-by: Laurent Dufour Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman

crypto: add missing crypto module aliases

2015-01-30T01:40:50+00:00

commit 3e14dcf7cb80b34a1f38b55bc96f02d23fdaaaaf upstream. Commit 5d26a105b5a7 ("crypto: prefix module autoloading with "crypto-"") changed the automatic module loading when requesting crypto algorithms to prefix all module requests with "crypto-". This requires all crypto modules to have a crypto specific module alias even if their file name would otherwise match the requested crypto algorithm. Even though commit 5d26a105b5a7 added those aliases for a vast amount of modules, it was missing a few. Add the required MODULE_ALIAS_CRYPTO annotations to those files to make them get loaded automatically, again. This fixes, e.g., requesting 'ecb(blowfish-generic)', which used to work with kernels v3.18 and below. Also change MODULE_ALIAS() lines to MODULE_ALIAS_CRYPTO(). The former won't work for crypto modules any more. Fixes: 5d26a105b5a7 ("crypto: prefix module autoloading with "crypto-"") Cc: Kees Cook Signed-off-by: Mathias Krause Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

crypto: prefix module autoloading with "crypto-"

2015-01-30T01:40:50+00:00

commit 5d26a105b5a73e5635eae0629b42fa0a90e07b7b upstream. This prefixes all crypto module loading with "crypto-" so we never run the risk of exposing module auto-loading to userspace via a crypto API, as demonstrated by Mathias Krause: https://lkml.org/lkml/2013/3/4/70 Signed-off-by: Kees Cook Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

powerpc/book3s: Fix partial invalidation of TLBs in MCE code.

2015-01-16T14:59:30+00:00

commit 682e77c861c4c60f79ffbeae5e1938ffed24a575 upstream. The existing MCE code calls flush_tlb hook with IS=0 (single page) resulting in partial invalidation of TLBs which is not right. This patch fixes that by passing IS=0xc00 to invalidate whole TLB for successful recovery from TLB and ERAT errors. Signed-off-by: Mahesh Salgaonkar Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman

powerpc: Fix bad NULL pointer check in udbg_uart_getc_poll()

2015-01-16T14:59:30+00:00

commit cd32e2dcc9de6c27ecbbfc0e2079fb64b42bad5f upstream. We have some code in udbg_uart_getc_poll() that tries to protect against a NULL udbg_uart_in, but gets it all wrong. Found with the LLVM static analyzer (scan-build). Fixes: 309257484cc1 ("powerpc: Cleanup udbg_16550 and add support for LPC PIO-only UARTs") Signed-off-by: Anton Blanchard [mpe: Add some newlines for readability while we're here] Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman

powerpc: 32 bit getcpu VDSO function uses 64 bit instructions

2014-12-16T17:34:28+00:00

commit 152d44a853e42952f6c8a504fb1f8eefd21fd5fd upstream. I used some 64 bit instructions when adding the 32 bit getcpu VDSO function. Fix it. Fixes: 18ad51dd342a ("powerpc: Add VDSO version of getcpu") Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman

powerpc/powernv: Honor the generic "no_64bit_msi" flag

2014-12-06T23:55:39+00:00

commit 360743814c4082515581aa23ab1d8e699e1fbe88 upstream. Instead of the arch specific quirk which we are deprecating and that drivers don't understand. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Greg Kroah-Hartman

powerpc/pseries: Fix endiannes issue in RTAS call from xmon

2014-12-06T23:55:36+00:00

commit 3b8a3c01096925a824ed3272601082289d9c23a5 upstream. On pseries system (LPAR) xmon failed to enter when running in LE mode, system is hunging. Inititating xmon will lead to such an output on the console: SysRq : Entering xmon cpu 0x15: Vector: 0 at [c0000003f39ffb10] pc: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70 lr: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70 sp: c0000003f39ffc70 msr: 8000000000009033 current = 0xc0000003fafa7180 paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01 pid = 14617, comm = bash Bad kernel stack pointer fafb4b0 at eca7cc4 cpu 0x15: Vector: 300 (Data Access) at [c000000007f07d40] pc: 000000000eca7cc4 lr: 000000000eca7c44 sp: fafb4b0 msr: 8000000000001000 dar: 10000000 dsisr: 42000000 current = 0xc0000003fafa7180 paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01 pid = 14617, comm = bash cpu 0x15: Exception 300 (Data Access) in xmon, returning to main loop xmon: WARNING: bad recursive fault on cpu 0x15 The root cause is that xmon is calling RTAS to turn off the surveillance when entering xmon, and RTAS is requiring big endian parameters. This patch is byte swapping the RTAS arguments when running in LE mode. Signed-off-by: Laurent Dufour Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman

powerpc/pseries: Honor the generic "no_64bit_msi" flag

2014-12-06T23:55:35+00:00

commit 415072a041bf50dbd6d56934ffc0cbbe14c97be8 upstream. Instead of the arch specific quirk which we are deprecating Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Greg Kroah-Hartman