Merge "iommu/arm-smmu: Rate-limit the context fault handler" (54d4d699) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/iommu/arm-smmu.c

+28 −19

Original line number	Diff line number	Diff line
		@@ -1089,6 +1089,10 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
		phys_addr_t phys_soft;
		u32 frsynra;

		static DEFINE_RATELIMIT_STATE(_rs,
		DEFAULT_RATELIMIT_INTERVAL,
		DEFAULT_RATELIMIT_BURST);

		mutex_lock(&smmu_domain->init_mutex);
		smmu = smmu_domain->smmu;
		if (!smmu) {
		@@ -1148,11 +1152,15 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
		phys_addr_t phys_atos = arm_smmu_verify_fault(domain, iova,
		fsr);

		if (__ratelimit(&_rs)) {
		dev_err(smmu->dev,
		"Unhandled context fault: iova=0x%08lx, fsr=0x%x, fsynr=0x%x, cb=%d\n",
		iova, fsr, fsynr, cfg->cbndx);
		dev_err(smmu->dev, "FAR = %016lx\n", (unsigned long)far);
		dev_err(smmu->dev, "FSR = %08x [%s%s%s%s%s%s%s%s%s]\n", fsr,
		dev_err(smmu->dev, "FAR = %016lx\n",
		(unsigned long)far);
		dev_err(smmu->dev,
		"FSR = %08x [%s%s%s%s%s%s%s%s%s]\n",
		fsr,
		(fsr & 0x02) ? "TF " : "",
		(fsr & 0x04) ? "AFF " : "",
		(fsr & 0x08) ? "PF " : "",
		@@ -1167,6 +1175,7 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
		dev_err(smmu->dev,
		"hard iova-to-phys (ATOS)=%pa\n", &phys_atos);
		dev_err(smmu->dev, "SID=0x%x\n", frsynra & 0x1FF);
		}
		ret = IRQ_NONE;
		resume = RESUME_TERMINATE;
		}