On Mon, Mar 14, 2022 at 02:25:41PM +, David Woodhouse wrote:
> The check on x86ms->apic_id_limit in pc_machine_done() had two problems.
>
> Firstly, we need KVM to support the X2APIC API in order to allow IRQ
> delivery to APICs >= 255. So we need to call/check kvm_enable_x2apic(),
> which
On Fri, 2022-03-18 at 15:17 +0100, Igor Mammedov wrote:
> On Thu, 17 Mar 2022 11:13:44 + David Woodhouse
> wrote:
> > Thus far, I didn't think anyone had been talking about a dependency on
> > IOMMU. That doesn't make any sense at all. EXT_DEST_ID is perfectly
> > sufficient for Linux
On Thu, 17 Mar 2022 11:13:44 +
David Woodhouse wrote:
> On Thu, 2022-03-17 at 10:05 +0100, Igor Mammedov wrote:
> > re-sending reply as something went wrong with headers (I suspect Daniel's
> > name formatting)
> > and email got bounced back.
> >
> > On Wed, 16 Mar 2022 14:31:33 +
> >
On Thu, 2022-03-17 at 10:05 +0100, Igor Mammedov wrote:
> re-sending reply as something went wrong with headers (I suspect Daniel's
> name formatting)
> and email got bounced back.
>
> On Wed, 16 Mar 2022 14:31:33 +
> David Woodhouse wrote:
>
> > On Wed, 2022-03-16 at 12:28 +0100, Igor
re-sending reply as something went wrong with headers (I suspect Daniel's name
formatting)
and email got bounced back.
On Wed, 16 Mar 2022 14:31:33 +
David Woodhouse wrote:
> On Wed, 2022-03-16 at 12:28 +0100, Igor Mammedov wrote:
> > Generally Daniel is right, as long as it's something
On Wed, 2022-03-16 at 12:28 +0100, Igor Mammedov wrote:
> Generally Daniel is right, as long as it's something that what real hardware
> supports. (usually it's job if upper layers which know what guest OS is used,
> and can tweak config based on that knowledge).
>
> But it's virt only extension
On Wed, 16 Mar 2022 06:47:48 -0400
"Michael S. Tsirkin" wrote:
> On Wed, Mar 16, 2022 at 10:37:49AM +, David Woodhouse wrote:
> > On Wed, 2022-03-16 at 05:56 -0400, Michael S. Tsirkin wrote:
> > > On Wed, Mar 16, 2022 at 09:37:07AM +, David Woodhouse wrote:
> > > > Yep, that's the
On Wed, 2022-03-16 at 05:56 -0400, Michael S. Tsirkin wrote:
> On Wed, Mar 16, 2022 at 09:37:07AM +, David Woodhouse wrote:
> > Yep, that's the guest operating system's choice. Not a qemu problem.
> >
> > Even if you have the split IRQ chip, if you boot a guest without kvm-
> >
On Wed, Mar 16, 2022 at 10:37:49AM +, David Woodhouse wrote:
> On Wed, 2022-03-16 at 05:56 -0400, Michael S. Tsirkin wrote:
> > On Wed, Mar 16, 2022 at 09:37:07AM +, David Woodhouse wrote:
> > > Yep, that's the guest operating system's choice. Not a qemu problem.
> > >
> > > Even if you
On Wed, Mar 16, 2022 at 09:37:07AM +, David Woodhouse wrote:
> On Wed, 2022-03-16 at 10:04 +0100, Igor Mammedov wrote:
> > Well, I retested with the latest upstream kernel (both guest and host),
> > and adding kvm_enable_x2apic() is not sufficient as guest according
> > to your patches in
On Wed, 2022-03-16 at 10:04 +0100, Igor Mammedov wrote:
> Well, I retested with the latest upstream kernel (both guest and host),
> and adding kvm_enable_x2apic() is not sufficient as guest according
> to your patches in kernel caps max APICID at 255 unless kvm-msi-ext-dest-id
> is enabled. And
On Mon, 14 Mar 2022 14:25:41 +
David Woodhouse wrote:
> The check on x86ms->apic_id_limit in pc_machine_done() had two problems.
>
> Firstly, we need KVM to support the X2APIC API in order to allow IRQ
> delivery to APICs >= 255. So we need to call/check kvm_enable_x2apic(),
> which was
The check on x86ms->apic_id_limit in pc_machine_done() had two problems.
Firstly, we need KVM to support the X2APIC API in order to allow IRQ
delivery to APICs >= 255. So we need to call/check kvm_enable_x2apic(),
which was done elsewhere in *some* cases but not all.
Secondly, microvm needs the
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