On Mon, Mar 15, 2021 at 12:21:36PM +0000, Andrew Scull wrote:
Commit c4b000c3928d4f20acef79dccf3a65ae3795e0b0 upstream.
When panicking from the nVHE hyp and restoring the host context, x29 is expected to hold a pointer to the host context. This wasn't being done so fix it to make sure there's a valid pointer the host context being used.
Rather than passing a boolean indicating whether or not the host context should be restored, instead pass the pointer to the host context. NULL is passed to indicate that no context should be restored.
Fixes: a2e102e20fd6 ("KVM: arm64: nVHE: Handle hyp panics") Cc: stable@vger.kernel.org # 5.11.y only Signed-off-by: Andrew Scull ascull@google.com Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/20210219122406.1337626-1-ascull@google.com
arch/arm64/include/asm/kvm_hyp.h | 3 ++- arch/arm64/kvm/hyp/nvhe/host.S | 20 ++++++++++---------- arch/arm64/kvm/hyp/nvhe/switch.c | 3 +-- 3 files changed, 13 insertions(+), 13 deletions(-)
Both backports now queued up, thanks.
greg k-h