BMC/Intel-BMC/linux.git/arch/powerpc/lib/copyuser_power7.S, branch dev

powerpc: Change vrX register defines to vX to match gcc and glibc

2015-03-16T07:32:11+00:00

As our various loops (copy, string, crypto etc) get more complicated, we want to share implementations between userspace (eg glibc) and the kernel. We also want to write userspace test harnesses to put in tools/testing/selftest. One gratuitous difference between userspace and the kernel is the VMX register definitions - the kernel uses vrX whereas both gcc and glibc use vX. Change the kernel to match userspace. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman

powerpc: Fix comment typos 'CONFiG_ALTIVEC'

2014-10-29T13:41:49+00:00

Signed-off-by: Paul Bolle Signed-off-by: Jiri Kosina

powerpc: Fix unsafe accesses to parameter area in ELFv2

2014-04-23T00:05:24+00:00

Some of the assembler files in lib/ make use of the fact that in the ELFv1 ABI, the caller guarantees to provide stack space to save the parameter registers r3 ... r10. This guarantee is no longer present in ELFv2 for functions that have no variable argument list and no more than 8 arguments. Change the affected routines to temporarily store registers in the red zone and/or the top of their own stack frame (in the space provided to save r31 .. r29, which is actually not used in these routines). In opal_query_takeover, simply always allocate a stack frame; the routine is not performance critical. Signed-off-by: Ulrich Weigand Signed-off-by: Anton Blanchard

powerpc: Fix ABIv2 issues with stack offsets in assembly code

2014-04-23T00:05:23+00:00

Fix STK_PARAM and use it instead of hardcoding ABIv1 offsets. Signed-off-by: Anton Blanchard

powerpc: No need to use dot symbols when branching to a function

2014-04-23T00:05:16+00:00

binutils is smart enough to know that a branch to a function descriptor is actually a branch to the functions text address. Alan tells me that binutils has been doing this for 9 years. Signed-off-by: Anton Blanchard

powerpc: Fix endian issues in VMX copy loops

2013-10-11T05:48:25+00:00

Fix the permute loops for little endian. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Improve stream generation comments in copypage/user

2013-05-31T22:29:26+00:00

No code changes, just documenting what's happening a little better. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix VMX in interrupt check in POWER7 copy loops

2012-08-24T10:26:09+00:00

The enhanced prefetch hint patches corrupt the condition register that was used to check if we are in interrupt. Fix this by using cr1. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt

powerpc: POWER7 copy_to_user/copy_from_user patch applied twice

2012-08-24T10:26:09+00:00

"powerpc: Use enhanced touch instructions in POWER7 copy_to_user/copy_from_user" was applied twice. Remove one. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt

powerpc: Merge STK_REG/PARAM/FRAMESIZE

2012-07-10T09:18:03+00:00

Merge the defines of STACKFRAMESIZE, STK_REG, STK_PARAM from different places. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt