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target/arm: Always enable pac keys for user-only

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Drop the pac properties.  This approach cannot work as written
because the properties are applied before arm_cpu_reset, which
zeros SCTLR_EL1 (amongst everything else).

We can re-introduce the properties if they turn out to be useful.
But since linux 5.0 enables all of the keys, they may not be.

Fixes: 1ae9cfbd47
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2019-01-25 14:57:08 -08:00 • committed by Peter Maydell
parent 42f6ed9193
commit 276c6e8137
2 changed files with 3 additions and 60 deletions
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3
target/arm/cpu.c
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@ -185,6 +185,9 @@ static void arm_cpu_reset(CPUState *s)
env->pstate = PSTATE_MODE_EL0t;
/* Userspace expects access to DC ZVA, CTL_EL0 and the cache ops */
env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE;
/* Enable all PAC keys. */
env->cp15.sctlr_el[1] |= (SCTLR_EnIA | SCTLR_EnIB |
SCTLR_EnDA | SCTLR_EnDB);
/* Enable all PAC instructions */
env->cp15.hcr_el2 |= HCR_API;
env->cp15.scr_el3 |= SCR_API;