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Subject[PATCH 0/2] x86/vdso: RDPID support and a test
Date
RDPID is a new instruction in unspecified future Intel processors
(sigh) that returns MSR_TSC_AUX. This will finally let the vDSO
stop using LSL.

Patch 1 is the meat and patch 2 is the test. Megha has kindly
tested them for me, since I don't own an unspecified Intel processor :)

Andy Lutomirski (2):
x86/vdso: Use RDPID in preference to LSL when available
selftests/x86: Add test_vdso to test getcpu

arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/include/asm/vgtod.h | 7 +-
tools/testing/selftests/x86/Makefile | 2 +-
tools/testing/selftests/x86/test_vdso.c | 123 ++++++++++++++++++++++++++++++++
4 files changed, 131 insertions(+), 2 deletions(-)
create mode 100644 tools/testing/selftests/x86/test_vdso.c

--
2.7.4

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