diff options
| -rw-r--r-- | hw/arm/smmu-common.c | 11 | ||||
| -rw-r--r-- | hw/arm/smmuv3-internal.h | 1 | ||||
| -rw-r--r-- | hw/arm/smmuv3.c | 1 | ||||
| -rw-r--r-- | include/hw/arm/smmu-common.h | 1 |
4 files changed, 14 insertions, 0 deletions
diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c index f58261b..4caedb4 100644 --- a/hw/arm/smmu-common.c +++ b/hw/arm/smmu-common.c @@ -364,6 +364,17 @@ static int smmu_ptw_64_s1(SMMUTransCfg *cfg, pte_addr, pte, iova, gpa, block_size >> 20); } + + /* + * QEMU does not currently implement HTTU, so if AFFD and PTE.AF + * are 0 we take an Access flag fault. (5.4. Context Descriptor) + * An Access flag fault takes priority over a Permission fault. + */ + if (!PTE_AF(pte) && !cfg->affd) { + info->type = SMMU_PTW_ERR_ACCESS; + goto error; + } + ap = PTE_AP(pte); if (is_permission_fault(ap, perm)) { info->type = SMMU_PTW_ERR_PERMISSION; diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h index e987bc4..e4dd11e 100644 --- a/hw/arm/smmuv3-internal.h +++ b/hw/arm/smmuv3-internal.h @@ -624,6 +624,7 @@ static inline int pa_range(STE *ste) #define CD_EPD(x, sel) extract32((x)->word[0], (16 * (sel)) + 14, 1) #define CD_ENDI(x) extract32((x)->word[0], 15, 1) #define CD_IPS(x) extract32((x)->word[1], 0 , 3) +#define CD_AFFD(x) extract32((x)->word[1], 3 , 1) #define CD_TBI(x) extract32((x)->word[1], 6 , 2) #define CD_HD(x) extract32((x)->word[1], 10 , 1) #define CD_HA(x) extract32((x)->word[1], 11 , 1) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index b3d8642..9eb56a7 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -684,6 +684,7 @@ static int decode_cd(SMMUTransCfg *cfg, CD *cd, SMMUEventInfo *event) cfg->oas = MIN(oas2bits(SMMU_IDR5_OAS), cfg->oas); cfg->tbi = CD_TBI(cd); cfg->asid = CD_ASID(cd); + cfg->affd = CD_AFFD(cd); trace_smmuv3_decode_cd(cfg->oas); diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h index fd8d772..5ec2e6c 100644 --- a/include/hw/arm/smmu-common.h +++ b/include/hw/arm/smmu-common.h @@ -92,6 +92,7 @@ typedef struct SMMUTransCfg { bool disabled; /* smmu is disabled */ bool bypassed; /* translation is bypassed */ bool aborted; /* translation is aborted */ + bool affd; /* AF fault disable */ uint32_t iotlb_hits; /* counts IOTLB hits */ uint32_t iotlb_misses; /* counts IOTLB misses*/ /* Used by stage-1 only. */ |