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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a015c1e926
This patch fixes a bug in the accounting of the device_state. In the current code, the device_state was put (decremented) too many times, which sometimes lead to the driver getting stuck permanently in put_device_state_wait(). That happen because the device_state->count would go below zero, which is never supposed to happen. The root cause is that the device_state was decremented in put_pasid_state() and put_pasid_state_wait() but also in all the functions that call those functions. Therefore, the device_state was decremented twice in each of these code paths. The fix is to decouple the device_state accounting from the pasid_state accounting - remove the call to put_device_state() from the put_pasid_state() and the put_pasid_state_wait()) Signed-off-by: Oded Gabbay <oded.gabbay@amd.com> |
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.. | ||
amd_iommu_init.c | ||
amd_iommu_proto.h | ||
amd_iommu_types.h | ||
amd_iommu_v2.c | ||
amd_iommu.c | ||
arm-smmu.c | ||
dmar.c | ||
exynos-iommu.c | ||
fsl_pamu_domain.c | ||
fsl_pamu_domain.h | ||
fsl_pamu.c | ||
fsl_pamu.h | ||
intel_irq_remapping.c | ||
intel-iommu.c | ||
iommu-sysfs.c | ||
iommu-traces.c | ||
iommu.c | ||
iova.c | ||
ipmmu-vmsa.c | ||
irq_remapping.c | ||
irq_remapping.h | ||
Kconfig | ||
Makefile | ||
msm_iommu_dev.c | ||
msm_iommu_hw-8xxx.h | ||
msm_iommu.c | ||
msm_iommu.h | ||
of_iommu.c | ||
omap-iommu2.c | ||
omap-iommu-debug.c | ||
omap-iommu.c | ||
omap-iommu.h | ||
omap-iopgtable.h | ||
shmobile-iommu.c | ||
shmobile-ipmmu.c | ||
shmobile-ipmmu.h | ||
tegra-gart.c | ||
tegra-smmu.c |