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Commit abc7d8a4 authored by Nadav Amit's avatar Nadav Amit Committed by Paolo Bonzini
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KVM: x86: Non-canonical access using SS should cause #SS 



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: default avatarNadav Amit <namit@cs.technion.ac.il>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d50eaa18

arch/x86/kvm/emulate.c

+1 −1
Original line number Diff line number Diff line
@@ -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)