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powerpc/fsl: Flush branch predictor when entering KVM
authorDiana Craciun <diana.craciun@nxp.com>
Fri, 29 Mar 2019 11:26:15 +0000 (22:26 +1100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Apr 2019 04:25:14 +0000 (06:25 +0200)
commit51a498016367f57118a905f209410f3f13f59862
tree3ca9db0cdbc4cdc388b45b3420416a34e5666966tree | snapshot (tar.gz zip)
parentd5b60fb984dd9e9974f9adb949cbc2ac2d4ac6e4commit | 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/powerpc/kvm/bookehv_interrupts.S diff | blob | blame | history