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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-05-09 11:32:51 +0200 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-05-09 13:15:08 +0300 |
| commit | 326f578f7e1443bac2333712dd130a261ec15288 (patch) | |
| tree | 7d1e6123f831b6789f68d4e9ea0f7f10a904230b /mm/internal.h | |
| parent | 7fa57952d70f5737513d8319395e471d107e4e0d (diff) | |
| download | linux-326f578f7e1443bac2333712dd130a261ec15288.tar.bz2 | |
KVM: emulator: emulate SALC
This is an almost-undocumented instruction available in 32-bit mode.
I say "almost" undocumented because AMD documents it in their opcode
maps just to say that it is unavailable in 64-bit mode (sections
"A.2.1 One-Byte Opcodes" and "B.3 Invalid and Reassigned Instructions
in 64-Bit Mode").
It is roughly equivalent to "sbb %al, %al" except it does not
set the flags. Use fastop to emulate it, but do not use the opcode
directly because it would fail if the host is 64-bit!
Reported-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: stable@vger.kernel.org # 3.9
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'mm/internal.h')
0 files changed, 0 insertions, 0 deletions