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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: philmd@linaro.org, qemu-arm@nongnu.org, peter.maydell@linaro.org
Subject: [PATCH] target/arm: Two fixes for secure ptw
Date: Wed,  2 Nov 2022 16:47:06 +1100	[thread overview]
Message-ID: <20221102054706.1015830-1-richard.henderson@linaro.org> (raw)

Reversed the sense of non-secure in get_phys_addr_lpae,
and failed to initialize attrs.secure for ARMMMUIdx_Phys_S.

Fixes: 48da29e4 ("target/arm: Add ptw_idx to S1Translate")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1293
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/ptw.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 58a7bbda50..df3573f150 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -1357,7 +1357,7 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw,
     descaddr |= (address >> (stride * (4 - level))) & indexmask;
     descaddr &= ~7ULL;
     nstable = extract32(tableattrs, 4, 1);
-    if (!nstable) {
+    if (nstable) {
         /*
          * Stage2_S -> Stage2 or Phys_S -> Phys_NS
          * Assert that the non-secure idx are even, and relative order.
@@ -2671,6 +2671,13 @@ static bool get_phys_addr_with_struct(CPUARMState *env, S1Translate *ptw,
     bool is_secure = ptw->in_secure;
     ARMMMUIdx s1_mmu_idx;
 
+    /*
+     * The page table entries may downgrade secure to non-secure, but
+     * cannot upgrade an non-secure translation regime's attributes
+     * to secure.
+     */
+    result->f.attrs.secure = is_secure;
+
     switch (mmu_idx) {
     case ARMMMUIdx_Phys_S:
     case ARMMMUIdx_Phys_NS:
@@ -2712,12 +2719,6 @@ static bool get_phys_addr_with_struct(CPUARMState *env, S1Translate *ptw,
         break;
     }
 
-    /*
-     * The page table entries may downgrade secure to non-secure, but
-     * cannot upgrade an non-secure translation regime's attributes
-     * to secure.
-     */
-    result->f.attrs.secure = is_secure;
     result->f.attrs.user = regime_is_user(env, mmu_idx);
 
     /*
-- 
2.34.1



             reply	other threads:[~2022-11-02  5:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-02  5:47 Richard Henderson [this message]
2022-11-02  9:02 ` [PATCH] target/arm: Two fixes for secure ptw Philippe Mathieu-Daudé
2022-11-03 13:19 ` Peter Maydell
2022-11-03 13:23   ` Peter Maydell
2022-11-03 20:30   ` Richard Henderson
2022-11-04 10:58     ` Peter Maydell
2022-11-04 22:06       ` Richard Henderson

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