Joerg Roedel 9b45a7738e iommu/amd: Fix loop timeout issue in iommu_ga_log_enable() ... The polling loop for the register change in iommu_ga_log_enable() needs to have a udelay() in it. Otherwise the CPU might be faster than the IOMMU hardware and wrongly trigger the WARN_ON() further down the code stream. Use a 10us for udelay(), has there is some hardware where activation of the GA log can take more than a 100ms. A future optimization should move the activation check of the GA log to the point where it gets used for the first time. But that is a bigger change and not suitable for a fix. Fixes: 8bda0cfbdc ("iommu/amd: Detect and initialize guest vAPIC log") Signed-off-by: Joerg Roedel <jroedel@suse.de> Link: https://lore.kernel.org/r/20220204115537.3894-1-joro@8bytes.org		2022-02-04 12:57:26 +01:00
..
amd_iommu_types.h	iommu/amd: Remove useless irq affinity notifier	2021-12-17 09:30:22 +01:00
amd_iommu.h	iommu/amd: Tidy up DMA ops init	2021-06-07 14:51:33 +02:00
debugfs.c
init.c	iommu/amd: Fix loop timeout issue in iommu_ga_log_enable()	2022-02-04 12:57:26 +01:00
io_pgtable.c	iommu/amd: Use put_pages_list	2021-12-20 09:03:05 +01:00
iommu_v2.c	iommu/amd: Clarify AMD IOMMUv2 initialization messages	2021-11-26 22:54:20 +01:00
iommu.c	IOMMU Updates for Linux v5.16:	2021-11-04 11:11:24 -07:00
Kconfig	iommu/amd: Prepare for generic IO page table framework	2021-01-28 16:51:17 +01:00
Makefile	iommu/amd: Prepare for generic IO page table framework	2021-01-28 16:51:17 +01:00
quirks.c