On 2018年01月26日 10:49, Michael S. Tsirkin wrote:
On Fri, Jan 26, 2018 at 10:41:58AM +0800, Jason Wang wrote:
On 2018年01月26日 01:11, Michael S. Tsirkin wrote:
On Thu, Jan 25, 2018 at 09:49:22AM -0500, Paolo Bonzini wrote:
Michael and Jason, any progress on implementing a fast virtio mechanism
On Fri, Jan 26, 2018 at 10:41:58AM +0800, Jason Wang wrote:
>
>
> On 2018年01月26日 01:11, Michael S. Tsirkin wrote:
> > On Thu, Jan 25, 2018 at 09:49:22AM -0500, Paolo Bonzini wrote:
> > > > > Michael and Jason, any progress on implementing a fast virtio
> > > > > mechanism
> > > > > that doesn't
On 2018年01月26日 01:11, Michael S. Tsirkin wrote:
On Thu, Jan 25, 2018 at 09:49:22AM -0500, Paolo Bonzini wrote:
Michael and Jason, any progress on implementing a fast virtio mechanism
that doesn't rely on undefined behavior?
(Encode writing instruction length into last 4 bits of MMIO address,
On Thu, Jan 25, 2018 at 09:49:22AM -0500, Paolo Bonzini wrote:
> > > Michael and Jason, any progress on implementing a fast virtio mechanism
> > > that doesn't rely on undefined behavior?
> > >
> > > (Encode writing instruction length into last 4 bits of MMIO address,
> > > side-channel say that
Paolo Bonzini writes:
> - Original Message -
>> From: "Vitaly Kuznetsov"
>> To: k...@vger.kernel.org
>> Cc: x...@kernel.org, linux-kernel@vger.kernel.org, "Paolo Bonzini"
>> , "Radim Krčmář"
>>
>> Sent: Wednesday, January 24, 2018 4:12:34 PM
>> Subject: [PATCH] x86/kvm: disable fast MM
> > Michael and Jason, any progress on implementing a fast virtio mechanism
> > that doesn't rely on undefined behavior?
> >
> > (Encode writing instruction length into last 4 bits of MMIO address,
> > side-channel say that accesses to the MMIO area always use certain
> > instruction length, us
On 2018年01月25日 22:16, Radim Krčmář wrote:
2018-01-25 01:55-0800, Liran Alon:
- vkuzn...@redhat.com wrote:
I was investigating an issue with seabios >= 1.10 which stopped
working
for nested KVM on Hyper-V. The problem appears to be in
handle_ept_violation() function: when we do fast mmio w
2018-01-24 16:12+0100, Vitaly Kuznetsov:
> I was investigating an issue with seabios >= 1.10 which stopped working
> for nested KVM on Hyper-V. The problem appears to be in
> handle_ept_violation() function: when we do fast mmio we need to skip
> the instruction so we do kvm_skip_emulated_instructi
- Original Message -
> From: "Vitaly Kuznetsov"
> To: k...@vger.kernel.org
> Cc: x...@kernel.org, linux-kernel@vger.kernel.org, "Paolo Bonzini"
> , "Radim Krčmář"
>
> Sent: Wednesday, January 24, 2018 4:12:34 PM
> Subject: [PATCH] x86/kvm: disable fast MMIO when running nested
>
> I w
2018-01-25 01:55-0800, Liran Alon:
> - vkuzn...@redhat.com wrote:
> > I was investigating an issue with seabios >= 1.10 which stopped
> > working
> > for nested KVM on Hyper-V. The problem appears to be in
> > handle_ept_violation() function: when we do fast mmio we need to skip
> > the instruc
- vkuzn...@redhat.com wrote:
> I was investigating an issue with seabios >= 1.10 which stopped
> working
> for nested KVM on Hyper-V. The problem appears to be in
> handle_ept_violation() function: when we do fast mmio we need to skip
> the instruction so we do kvm_skip_emulated_instruction()
2018-01-24 23:12 GMT+08:00 Vitaly Kuznetsov :
> I was investigating an issue with seabios >= 1.10 which stopped working
> for nested KVM on Hyper-V. The problem appears to be in
> handle_ept_violation() function: when we do fast mmio we need to skip
> the instruction so we do kvm_skip_emulated_inst
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