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| author | Nadav Amit <namit@cs.technion.ac.il> | 2015-01-26 09:32:21 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-01-26 12:14:18 +0100 |
| commit | 2fcf5c8ae244b4c298d2111a288d410a719ac626 (patch) | |
| tree | 43b8ec0a3384b01008d27e647ee1615fbb1a0aa2 /lib/locking-selftest-spin-softirq.h | |
| parent | 8fff5e374a2f6047d1bb52288af7da119bc75765 (diff) | |
| download | talos-op-linux-2fcf5c8ae244b4c298d2111a288d410a719ac626.tar.gz talos-op-linux-2fcf5c8ae244b4c298d2111a288d410a719ac626.zip | |
KVM: x86: Dirty the dest op page on cmpxchg emulation
Intel SDM says for CMPXCHG: "To simplify the interface to the processor’s bus,
the destination operand receives a write cycle without regard to the result of
the comparison.". This means the destination page should be dirtied.
Fix it to by writing back the original value if cmpxchg failed.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'lib/locking-selftest-spin-softirq.h')
0 files changed, 0 insertions, 0 deletions
