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[PATCH v2 02/15] target/arm: Set TCR_EL1.TSZ for user-only


From: Richard Henderson
Subject: [PATCH v2 02/15] target/arm: Set TCR_EL1.TSZ for user-only
Date: Thu, 10 Feb 2022 15:04:10 +1100

Set this as the kernel would, to 48 bits, to keep the computation
of the address space correct for PAuth.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 5a9c02a256..92f19f919a 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -206,10 +206,11 @@ static void arm_cpu_reset(DeviceState *dev)
                 aarch64_sve_zcr_get_valid_len(cpu, cpu->sve_default_vq - 1);
         }
         /*
+         * Enable 48-bit address space (TODO: take reserved_va into account).
          * Enable TBI0 but not TBI1.
          * Note that this must match useronly_clean_ptr.
          */
-        env->cp15.tcr_el[1].raw_tcr = (1ULL << 37);
+        env->cp15.tcr_el[1].raw_tcr = 5 | (1ULL << 37);
 
         /* Enable MTE */
         if (cpu_isar_feature(aa64_mte, cpu)) {
-- 
2.25.1




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