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[PATCH 1/3] hw/arm/boot: Fix PAUTH for EL3 direct kernel boot
From: |
Richard Henderson |
Subject: |
[PATCH 1/3] hw/arm/boot: Fix PAUTH for EL3 direct kernel boot |
Date: |
Fri, 24 Jul 2020 09:38:51 -0700 |
When booting an EL3 cpu with -kernel, we set up EL3 and then
drop down to EL2. We need to enable access to v8.3-PAuth
keys and instructions at EL3 before doing so.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
hw/arm/boot.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index fef4072db1..c44fd3382d 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -736,6 +736,9 @@ static void do_cpu_reset(void *opaque)
} else {
env->pstate = PSTATE_MODE_EL1h;
}
+ if (cpu_isar_feature(aa64_pauth, cpu)) {
+ env->cp15.scr_el3 |= SCR_API | SCR_APK;
+ }
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently:
--
2.25.1