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SUSE:SLE-12-SP2:GA
xen.5575
5882129d-x86emul-LOCK-check-adjustments.patch
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File 5882129d-x86emul-LOCK-check-adjustments.patch of Package xen.5575
# Commit f2d4f4ba80de8a03a1b0f300d271715a88a8433d # Date 2017-01-20 14:37:33 +0100 # Author Jan Beulich <jbeulich@suse.com> # Committer Jan Beulich <jbeulich@suse.com> x86emul: LOCK check adjustments BT, being encoded as DstBitBase just like BT{C,R,S}, nevertheless does not write its (register or memory) operand and hence also doesn't allow a LOCK prefix to be used. Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -4528,6 +4528,7 @@ x86_emulate( break; case 0xa3: bt: /* bt */ + generate_exception_if(lock_prefix, EXC_UD, 0); emulate_2op_SrcV_nobyte("bt", src, dst, _regs.eflags); dst.type = OP_NONE; break;
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