KVM: arm64: Stop clobbering x0 for HVC_SOFT_RESTART
HVC_SOFT_RESTART is given values for x0-2 that it should installed before exiting to the new address so should not set x0 to stub HVC success or failure code. Fixes: af42f204 ("arm64: hyp-stub: Zero x0 on successful stub handling") Cc: stable@vger.kernel.org Signed-off-by:Andrew Scull <ascull@google.com> Signed-off-by:
Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200706095259.1338221-1-ascull@google.com
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