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KVM: x86: Non-canonical access using SS should cause #SS

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When SS is used using a non-canonical address, an #SS exception is generated on
real hardware.  KVM emulator causes a #GP instead. Fix it to behave as real x86
CPU.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Nadav Amit 2014-11-19 17:43:12 +02:00 committed by Paolo Bonzini
parent d50eaa1803
commit abc7d8a4c9
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/emulate.c
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@ -635,7 +635,7 @@ static __always_inline int __linearize(struct x86_emulate_ctxt *ctxt,
switch (mode) {
case X86EMUL_MODE_PROT64:
if (is_noncanonical_address(la))
return emulate_gp(ctxt, 0);
goto bad;
*max_size = min_t(u64, ~0u, (1ull << 48) - la);
if (size > *max_size)