[GIT PULL] KVM/arm64 fixes for 6.14, take #3
Paolo Bonzini
pbonzini at redhat.com
Mon Feb 24 10:20:14 PST 2025
On Thu, Feb 20, 2025 at 6:44 PM Marc Zyngier <maz at kernel.org> wrote:
>
> Paolo,
>
> Another week, another set of fixes.
>
> This time around, we have a focus on MMU bugs, with one bug affecting
> hVHE EL2 stage-1 and picking the ASID from the wrong register, while
> the other affects VHE and allows it to run with a stale VMID value.
>
> Either way, this is ugly.
>
> Please pull,
Pulled, thanks.
Paolo
> M.
>
> The following changes since commit 0ad2507d5d93f39619fc42372c347d6006b64319:
>
> Linux 6.14-rc3 (2025-02-16 14:02:44 -0800)
>
> are available in the Git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.14-3
>
> for you to fetch changes up to fa808ed4e199ed17d878eb75b110bda30dd52434:
>
> KVM: arm64: Ensure a VMID is allocated before programming VTTBR_EL2 (2025-02-20 16:29:28 +0000)
>
> ----------------------------------------------------------------
> KVM/arm64 fixes for 6.14, take #3
>
> - Fix TCR_EL2 configuration to not use the ASID in TTBR1_EL2
> and not mess-up T1SZ/PS by using the HCR_EL2.E2H==0 layout.
>
> - Bring back the VMID allocation to the vcpu_load phase, ensuring
> that we only setup VTTBR_EL2 once on VHE. This cures an ugly
> race that would lead to running with an unallocated VMID.
>
> ----------------------------------------------------------------
> Oliver Upton (1):
> KVM: arm64: Ensure a VMID is allocated before programming VTTBR_EL2
>
> Will Deacon (1):
> KVM: arm64: Fix tcr_el2 initialisation in hVHE mode
>
> arch/arm64/include/asm/kvm_arm.h | 2 +-
> arch/arm64/include/asm/kvm_host.h | 2 +-
> arch/arm64/kvm/arm.c | 37 +++++++++++++++++--------------------
> arch/arm64/kvm/vmid.c | 11 +++--------
> 4 files changed, 22 insertions(+), 30 deletions(-)
>
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