Messages in this thread | | | Date | Fri, 25 Mar 2022 13:06:15 +0000 | From | Marc Zyngier <> | Subject | Re: 回复: Re: [PATCH] kvm: fix gpu passthrough into vm on arm64 |
| |
On Fri, 25 Mar 2022 01:06:17 +0000, 谢明 <xieming@kylinos.cn> wrote: > > thanks for your reply ! > you are right, 'If the device supports NORMAL_NC, this should > be known by the host kernel and exposed to KVM', accordding the kvm > combining rules on arm64, stage1 is setting to NORMAL_NC, so can > we add a conditional judement when ioremapping on stage2, if the > device suppurt NORMAL_NC we setting the memory attribute to > PAGE_S2_NC ?
The question remains: how do you convey that capability to the host? There is nothing currently telling KVM what memory type to use.
M.
-- Without deviation from the norm, progress is not possible.
| |