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powerpc/fsl: Flush branch predictor when entering KVM
authorDiana Craciun <diana.craciun@nxp.com>
Thu, 11 Apr 2019 11:46:25 +0000 (21:46 +1000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Apr 2019 06:36:43 +0000 (08:36 +0200)
commit5b0392afd333e0dc78f9a0b50951b5a5e1b74e02
tree826e7428d190b4543b7280094befb0572a18add9tree | snapshot
parente1152947cea025cc832df454be283f5cb99baa81commit | diff
powerpc/fsl: Flush branch predictor when entering KVM

commit e7aa61f47b23afbec41031bc47ca8d6cb6516abc upstream.

Switching from the guest to host is another place
where the speculative accesses can be exploited.
Flush the branch predictor when entering KVM.

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/powerpc/kvm/bookehv_interrupts.S diff | blob | history
Domain: System / Kernel;