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Date: Thu, 7 Jan 2016 11:07:35 +0100 From: Paolo Bonzini <pbonzini@...hat.com> To: Nicholas Krause <xerofoify@...il.com>, gleb@...nel.org Cc: x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH RESEND] kvm:x86:Make sure kvm_write_guest successes for first call in kvm_write_wall_clock On 30/12/2015 19:08, Nicholas Krause wrote: > This makes sure that kvm_write_guest successes for the first call > in order to make sure that the wall clock is successfully written > to the host system before being calucated as required by the > guest system. > > Signed-off-by: Nicholas Krause <xerofoify@...il.com> > --- > arch/x86/kvm/x86.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index eed3228..7551f30 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -1167,7 +1167,8 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock) > > ++version; > > - kvm_write_guest(kvm, wall_clock, &version, sizeof(version)); > + if (kvm_write_guest(kvm, wall_clock, &version, sizeof(version))) > + return; > > /* > * The guest calculates current wall clock time by adding > Applied, thanks. Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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