Yeah I see there is not flow to en_sysenter which doesn't pass this logic. Thanks
-----Original Message-----
From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Sent: Tuesday, June 18, 2019 5:12 PM
To: Saar Amar <Saar.Amar@xxxxxxxxxxxxx>; kvm@xxxxxxxxxxxxxxx
Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Subject: Re: KVM: x86: Fix emulation of sysenter
On 18/06/19 15:19, Saar Amar wrote:
> I found a bug in sysenter emulation. Patch attached both in plaintext
> and as patch file.
Do you have a testcase for this? RF is cleared for all instructions here:
if (ctxt->rep_prefix && (ctxt->d & String))
ctxt->eflags |= X86_EFLAGS_RF;
else
ctxt->eflags &= ~X86_EFLAGS_RF;
just before em_sysenter is called.
Paolo
