Re: powerpc: fix 32-bit KVM-PR lockup and panic with MacOS guest
From: Michael Ellerman
Date: Fri Feb 22 2019 - 04:48:00 EST
On Fri, 2019-02-08 at 14:33:19 UTC, Mark Cave-Ayland wrote:
> Commit 8792468da5e1 "powerpc: Add the ability to save FPU without giving it up"
> unexpectedly removed the MSR_FE0 and MSR_FE1 bits from the bitmask used to
> update the MSR of the previous thread in __giveup_fpu() causing a KVM-PR MacOS
> guest to lockup and panic the kernel.
>
> Reinstate these bits to the MSR bitmask to enable MacOS guests to run under
> 32-bit KVM-PR once again without issue.
>
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@xxxxxxxxxxxx>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/fe1ef6bcdb4fca33434256a802a3ed6a
cheers