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authorVasant Hegde2024-05-06 08:20:39 +0000
committerJoerg Roedel2024-05-06 10:24:18 +0200
commitde111f6b4f6a3010020825d22a068f416bc29c95 (patch)
tree21c9b9faeb4f897d27b1ab952a5bae79f77e1f7d /arch/mips
parentbbe1e78ae23e7e474401880d0d496acc8cec6863 (diff)
iommu/amd: Enable Guest Translation after reading IOMMU feature register
Commit 8e0179733172 ("iommu/amd: Enable Guest Translation before registering devices") moved IOMMU Guest Translation (GT) enablement to early init path. It does feature check based on Global EFR value (got from ACPI IVRS table). Later it adjusts EFR value based on IOMMU feature register (late_iommu_features_init()). It seems in some systems BIOS doesn't set gloabl EFR value properly. This is causing mismatch. Hence move IOMMU GT enablement after late_iommu_features_init() so that it does check based on IOMMU EFR value. Fixes: 8e0179733172 ("iommu/amd: Enable Guest Translation before registering devices") Reported-by: Klara Modin <klarasmodin@gmail.com> Closes: https://lore.kernel.org/linux-iommu/333e6eb6-361c-4afb-8107-2573324bf689@gmail.com/ Signed-off-by: Vasant Hegde <vasant.hegde@amd.com> Tested-by: Klara Modin <klarasmodin@gmail.com> Link: https://lore.kernel.org/r/20240506082039.7575-1-vasant.hegde@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'arch/mips')
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