Giacomo Travaglini has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/50388 )
Change subject: arch-arm: Use EL0 permission logic when checking unpriv
reference
......................................................................
arch-arm: Use EL0 permission logic when checking unpriv reference
An unprivileged memory reference (LDTR and STTR) executed at EL1
should be regarded as an EL0 memory access
Change-Id: Iae5e6e582f9c5a57340f27a84db463bcb8996922
Signed-off-by: Giacomo Travaglini <[email protected]>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50388
Reviewed-by: Andreas Sandberg <[email protected]>
Maintainer: Andreas Sandberg <[email protected]>
Tested-by: kokoro <[email protected]>
---
M src/arch/arm/mmu.cc
1 file changed, 2 insertions(+), 1 deletion(-)
Approvals:
Andreas Sandberg: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/src/arch/arm/mmu.cc b/src/arch/arm/mmu.cc
index 4f2f922..4cd1a67 100644
--- a/src/arch/arm/mmu.cc
+++ b/src/arch/arm/mmu.cc
@@ -604,7 +604,8 @@
return std::make_pair(false, false);
}
- switch (state.aarch64EL) {
+ ExceptionLevel regime = !is_priv ? EL0 : state.aarch64EL;
+ switch (regime) {
case EL0:
{
grant_read = ap & 0x1;
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Iae5e6e582f9c5a57340f27a84db463bcb8996922
Gerrit-Change-Number: 50388
Gerrit-PatchSet: 2
Gerrit-Owner: Giacomo Travaglini <[email protected]>
Gerrit-Reviewer: Andreas Sandberg <[email protected]>
Gerrit-Reviewer: Giacomo Travaglini <[email protected]>
Gerrit-Reviewer: kokoro <[email protected]>
Gerrit-MessageType: merged
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