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[PATCH v6 23/25] target/riscv: Merge checks for reserved pte flags
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From: |
Richard Henderson |
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Subject: |
[PATCH v6 23/25] target/riscv: Merge checks for reserved pte flags |
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Date: |
Sat, 25 Mar 2023 03:54:27 -0700 |
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/riscv/cpu_helper.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 850817edfd..82a7c5f9dd 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -976,14 +976,14 @@ restart:
/* Reserved without Svpbmt. */
return TRANSLATE_FAIL;
}
- if ((pte & (PTE_R | PTE_W | PTE_X)) == PTE_W) {
- /* Reserved leaf PTE flags: PTE_W */
- return TRANSLATE_FAIL;
- }
- if ((pte & (PTE_R | PTE_W | PTE_X)) == (PTE_W | PTE_X)) {
- /* Reserved leaf PTE flags: PTE_W + PTE_X */
+
+ /* Check for reserved combinations of RWX flags. */
+ switch (pte & (PTE_R | PTE_W | PTE_X)) {
+ case PTE_W:
+ case PTE_W | PTE_X:
return TRANSLATE_FAIL;
}
+
if ((pte & PTE_U) &&
((mode != PRV_U) && (!sum || access_type == MMU_INST_FETCH))) {
/*
--
2.34.1
- [PATCH v6 00/25] target/riscv: MSTATUS_SUM + cleanups, Richard Henderson, 2023/03/25
- [PATCH v6 03/25] target/riscv: Encode the FS and VS on a normal way for tb flags, Richard Henderson, 2023/03/25
- [PATCH v6 10/25] target/riscv: Handle HLV, HSV via helpers, Richard Henderson, 2023/03/25
- [PATCH v6 22/25] target/riscv: Don't modify SUM with is_debug, Richard Henderson, 2023/03/25
- [PATCH v6 06/25] target/riscv: Separate priv from mmu_idx, Richard Henderson, 2023/03/25
- [PATCH v6 12/25] target/riscv: Introduce mmuidx_sum, Richard Henderson, 2023/03/25
- [PATCH v6 23/25] target/riscv: Merge checks for reserved pte flags,
Richard Henderson <=
- [PATCH v6 20/25] target/riscv: Move leaf pte processing out of level loop, Richard Henderson, 2023/03/25
- [PATCH v6 07/25] target/riscv: Reduce overhead of MSTATUS_SUM change, Richard Henderson, 2023/03/25
- [PATCH v6 19/25] target/riscv: Hoist pbmte and hade out of the level loop, Richard Henderson, 2023/03/25
- [PATCH v6 11/25] target/riscv: Rename MMU_HYP_ACCESS_BIT to MMU_2STAGE_BIT, Richard Henderson, 2023/03/25
- [PATCH v6 16/25] target/riscv: Set MMU_2STAGE_BIT in riscv_cpu_mmu_index, Richard Henderson, 2023/03/25
- [PATCH v6 13/25] target/riscv: Introduce mmuidx_priv, Richard Henderson, 2023/03/25