Re: [PATCH v3 2/7] target/i386: Add RAS feature bits on EPYC CPU models

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Oct 28, 2024 at 02:59:17PM +0800, Zhao Liu wrote:
> (+John)
> 
> Hi Babu,
> 
> This patch is fine for me.
> 
> However, users recently reported an issue with SUCCOR support on AMD
> hosts: https://gitlab.com/qemu-project/qemu/-/issues/2571.
> 
> Could you please double check and clarify that issue on AMD host?

Thanks for the heads up. I can reproduce this on an AMD host with
kvm.ignore_msrs=1. It seems like kvm will need to block this feature on
the guest when ignore_msrs is set, but it's not clear to me how that
should be done yet.

Paolo,

Do you have any ideas about how we should handle this situation?

Thanks,
John

> 
> Thanks,
> Zhao
> 
> On Thu, Oct 24, 2024 at 05:18:20PM -0500, Babu Moger wrote:
> > Date: Thu, 24 Oct 2024 17:18:20 -0500
> > From: Babu Moger <babu.moger@xxxxxxx>
> > Subject: [PATCH v3 2/7] target/i386: Add RAS feature bits on EPYC CPU models
> > X-Mailer: git-send-email 2.34.1
> > 
> > Add the support for following RAS features bits on AMD guests.
> > 
> > SUCCOR: Software uncorrectable error containment and recovery capability.
> > 	The processor supports software containment of uncorrectable errors
> > 	through context synchronizing data poisoning and deferred error
> > 	interrupts.
> > 
> > McaOverflowRecov: MCA overflow recovery support.
> > 
> > Reviewed-by: Zhao Liu <zhao1.liu@xxxxxxxxx>
> > Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
> > ---
> > v3: No changes
> > 
> > v2: Added reviewed by from Zhao.
> > ---
> >  target/i386/cpu.c | 30 ++++++++++++++++++++++++++++++
> >  1 file changed, 30 insertions(+)
> 




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux