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[PULL,21/24] target-arm: Suppress EPD for S2, EL2 and EL3 translations

Message ID 1442238791-30255-22-git-send-email-peter.maydell@linaro.org
State Accepted
Commit 0c5fbf3b4c1e5210354de71a3dc2ebc8c8a01f31
Headers show

Commit Message

Peter Maydell Sept. 14, 2015, 1:53 p.m. UTC 
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Stage-2 translations, EL2 and EL3 regimes don't have the
EPD control.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1442135278-25281-6-git-send-email-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target-arm/helper.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 200b9f2..478347b 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -6344,7 +6344,7 @@  static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
     /* Read an LPAE long-descriptor translation table. */
     MMUFaultType fault_type = translation_fault;
     uint32_t level = 1;
-    uint32_t epd;
+    uint32_t epd = 0;
     int32_t tsz;
     uint32_t tg;
     uint64_t ttbr;
@@ -6438,7 +6438,9 @@  static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
      */
     if (ttbr_select == 0) {
         ttbr = regime_ttbr(env, mmu_idx, 0);
-        epd = extract32(tcr->raw_tcr, 7, 1);
+        if (el < 2) {
+            epd = extract32(tcr->raw_tcr, 7, 1);
+        }
         tsz = t0sz;
 
         tg = extract32(tcr->raw_tcr, 14, 2);