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KVM: x86: Emulate should check #UD before #GP
authorNadav Amit <namit@cs.technion.ac.il>
Wed, 10 Dec 2014 09:19:04 +0000 (11:19 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 10 Dec 2014 11:53:37 +0000 (12:53 +0100)
commitb9340afb9f5d113ee972ef83cb4f017224984c20
treed3be824a5fc8c034cea5aa3e157ebec6efeda7e7tree | snapshot
parent6b22e9fa7d602f550788e3795085adcc64863606commit | diff
KVM: x86: Emulate should check #UD before #GP

Intel SDM table 6-2 ("Priority Among Simultaneous Exceptions and Interrupts")
shows that faults from decoding the next instruction got higher priority than
general protection.  Moving the protected-mode check before the CPL check to
avoid wrong exception on vm86 mode.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/emulate.c diff | blob | history
Linux Kernel Source Tree.