FROMLIST: arm64: kernel: avoid x18 in __cpu_soft_restart
The code in __cpu_soft_restart() uses x18 as an arbitrary temp register, which will shortly be disallowed. So use x8 instead. Bug: 145210207 Change-Id: Ifeb90566b4e41eb376fd4beaffd55fca8597aa2c (am from https://lore.kernel.org/patchwork/patch/1149053/) Link: https://patchwork.kernel.org/patch/9836877/ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Kees Cook <keescook@chromium.org> [Sami: updated commit message] Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
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@ -45,11 +45,11 @@ ENTRY(__cpu_soft_restart)
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mov x0, #HVC_SOFT_RESTART
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hvc #0 // no return
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1: mov x18, x1 // entry
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1: mov x8, x1 // entry
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mov x0, x2 // arg0
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mov x1, x3 // arg1
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mov x2, x4 // arg2
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br x18
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br x8
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ENDPROC(__cpu_soft_restart)
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.popsection
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