Thread (5 messages) 5 messages, 2 authors, 2016-07-21
STALE3645d

[PATCH v2] arm64: KVM: VHE: Context switch MDSCR_EL1

From: Marc Zyngier <hidden>
Date: 2016-07-21 13:24:51
Also in: kvm, kvmarm

On Thu, 21 Jul 2016 15:17:20 +0200
Radim Kr?m?? [off-list ref] wrote:

Hi Radim,
2016-07-19 13:56+0100, Marc Zyngier:
quoted
The kprobe enablement work has uncovered that changes made by
a guest to MDSCR_EL1 were propagated to the host when VHE was
enabled, leading to unexpected exception being delivered.

Moving this register to the list of registers that are always
context-switched fixes the issue.

Fixes: 9c6c35683286 ("arm64: KVM: VHE: Split save/restore of registers shared between guest and host")
Cc: stable at vger.kernel.org #4.6
Reported-by: Tirumalesh Chalamarla <redacted>
Tested-by: Tirumalesh Chalamarla <redacted>
Signed-off-by: Marc Zyngier <redacted>
---  
I would take this patch to 4.7 directly through the main tree.
Are your plans different?
If you're happy to take it now, that works for me. I can either send a
PR right away, or you can apply it directly, whichever works best for
you.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny.
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