Re: [Xen-devel] [PATCH 6/7] x86emul: vendor specific SYSCALL behavior

2020-03-25 Thread Andrew Cooper
On 24/03/2020 16:28, Jan Beulich wrote: > AMD CPUs permit the insn everywhere (even outside of protected mode), > while Intel ones restrict it to 64-bit mode. While at it also add the > so far missing CPUID bit check. > > Signed-off-by: Jan Beulich > > --- a/xen/arch/x86/x86_emulate/x86_emulate.c

[Xen-devel] [PATCH 6/7] x86emul: vendor specific SYSCALL behavior

2020-03-24 Thread Jan Beulich
AMD CPUs permit the insn everywhere (even outside of protected mode), while Intel ones restrict it to 64-bit mode. While at it also add the so far missing CPUID bit check. Signed-off-by: Jan Beulich --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -187