> On 19 Feb 2026, at 1:44 PM, Cédric Le Goater <[email protected]> wrote:
>
>> please try this patch on top of my v5. It should fix the issue. I tested
>> on a RHEL 9 host and a fc43 SEV-SNP host, 1 or multiple vcpus, two
>> different guests and all looks good.
>> From 26db44eba8c727160dd9e97c9d5582a0ddc5884d Mon Sep 17 00:00:00 2001
>> From: Ani Sinha <[email protected]>
>> Date: Thu, 19 Feb 2026 13:12:02 +0530
>> Subject: [PATCH] Call cpu_synchronize_all_post_init for coco as well
>> Fixes issue reported by Cedric
>> Signed-off-by: Ani Sinha <[email protected]>
>> ---
>> accel/kvm/kvm-all.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>> diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
>> index d7ea60f582..0610bf8434 100644
>> --- a/accel/kvm/kvm-all.c
>> +++ b/accel/kvm/kvm-all.c
>> @@ -2816,7 +2816,7 @@ static int kvm_reset_vmfd(MachineState *ms)
>> }
>> s->vmfd = ret;
>> -
>> + kvm_state->guest_state_protected = false;
>> kvm_setup_dirty_ring(s);
>> /* rebind memory to new vm fd */
>> @@ -2872,6 +2872,9 @@ static int kvm_reset_vmfd(MachineState *ms)
>> * kvm fd has changed. Commit the irq routes to KVM once more.
>> */
>> kvm_irqchip_commit_routes(s);
>> + if (ms->cgs) {
>> + cpu_synchronize_all_post_init();
>> + }
>> trace_kvm_reset_vmfd();
>> return ret;
>> }
>
> Tested (OS reboot, system_reset) with a RHEL10 guest (2 vCPUs) on
> a RHEL9 and a RHEL10 host, using a SATA device and active NIC VFs.
> All Looks good.
Excellent. Also tested on a TDX host with RHEL 9.6 and seems good as well.
Tested running my integration tests on non-coco and all is fine there too.
>
> There is still one message :
>
> qemu-system-x86_64: info: virtual machine state has been rebuilt with new
> guest file handle.
>
> which seems normal.
>
> Thanks,
>
> C.
>
>
>
