KVM: x86: emulating descriptor load misses long-mode case
authorNadav Amit <namit@cs.technion.ac.il>
Thu, 18 Sep 2014 19:39:43 +0000 (22:39 +0300)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 24 Sep 2014 12:07:52 +0000 (14:07 +0200)
commit040c8dc8a5afa7364bb8bb5b1b76c30007d6be14
tree9686489a905a31c8eccbd10e3c3bb83eca8d88e9
parent77c3913b74212a86027d311f5e81625736816620
KVM: x86: emulating descriptor load misses long-mode case

In 64-bit mode a #GP should be delivered to the guest "if the code segment
descriptor pointed to by the selector in the 64-bit gate doesn't have the L-bit
set and the D-bit clear." - Intel SDM "Interrupt 13—General Protection
Exception (#GP)".

This patch fixes the behavior of CS loading emulation code. Although the
comment says that segment loading is not supported in long mode, this function
is executed in long mode, so the fix is necassary.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/emulate.c