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| author | Denys Vlasenko <dvlasenk@redhat.com> | 2015-02-12 20:06:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-18 21:01:59 +0100 |
| commit | cbb53b9623a70f012e1fdfb6fc0af6878df4762b (patch) | |
| tree | c7cdaefe10cb242f20ee4c02da6bc36188740ca8 /arch/x86/include | |
| parent | 8a764a875fe3cf3a83296bacd00bfc41917e95e2 (diff) | |
x86/asm/decoder: Explain CALLW discrepancy between Intel and AMD
In 64-bit mode, AMD and Intel CPUs treat 0x66 prefix before
branch insns differently. For near branches, it affects decode
too since immediate offset's width is different.
See these empirical tests:
http://marc.info/?l=linux-kernel&m=139714939728946&w=2
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/1423768017-31766-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include')
0 files changed, 0 insertions, 0 deletions