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af12376814
In preparation of reserving x18, stop treating it as caller save in the KVM guest entry/exit code. Currently, the code assumes there is no need to preserve it for the host, given that it would have been assumed clobbered anyway by the function call to __guest_enter(). Instead, preserve its value and restore it upon return. Link: https://patchwork.kernel.org/patch/9836891/ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> [Sami: updated commit message, switched from x18 to x29 for the guest context] Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will@kernel.org> |
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| .. | ||
| hyp | ||
| debug.c | ||
| fpsimd.c | ||
| guest.c | ||
| handle_exit.c | ||
| hyp-init.S | ||
| hyp.S | ||
| inject_fault.c | ||
| irq.h | ||
| Kconfig | ||
| Makefile | ||
| pmu.c | ||
| regmap.c | ||
| reset.c | ||
| sys_regs_generic_v8.c | ||
| sys_regs.c | ||
| sys_regs.h | ||
| trace.h | ||
| va_layout.c | ||
| vgic-sys-reg-v3.c | ||