[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v3 0/3] Sync MTRRs with KVM and disable on reset
|
From: |
Paolo Bonzini |
|
Subject: |
Re: [Qemu-devel] [PATCH v3 0/3] Sync MTRRs with KVM and disable on reset |
|
Date: |
Mon, 25 Aug 2014 18:49:55 +0200 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.7.0 |
Il 14/08/2014 23:39, Alex Williamson ha scritto:
> v3:
> - Fix off-by-one identified by Laszlo in 2/3
> - Add R-b in 1 & 3
>
> It turns out that not only do we not follow the SDM guidelines for
> reseting MTRR state on vCPU reset, but we really don't even attempt
> to keep KVM MTRR state synchronized with QEMU, which affects not
> only reset, but migration. This series implements the get/put MSR
> support for KVM, then goes on to properly re-initialize the state on
> vCPU reset. This resolves the problem described in the last patch
> as well as some potential mismatches around migration. The migration
> state is unchanged, other than actually passing valid data.
>
> Thanks to Laszlo for his help debugging this and realization of how
> terribly broken MTRR synchronization is. Thanks,
Applying to uq/master, thanks.
Paolo