Suravee Suthikulpanit e97685abd5 iommu/amd: Restore IRTE.RemapEn bit for amd_iommu_activate_guest_mode ... Commit e52d58d54a ("iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE") removed an assumption that modify_irte_ga always set the valid bit, which requires the callers to set the appropriate value for the struct irte_ga.valid bit before calling the function. Similar to the commit 26e495f341 ("iommu/amd: Restore IRTE.RemapEn bit after programming IRTE"), which is for the function amd_iommu_deactivate_guest_mode(). The same change is also needed for the amd_iommu_activate_guest_mode(). Otherwise, this could trigger IO_PAGE_FAULT for the VFIO based VMs with AVIC enabled. Fixes: e52d58d54a ("iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE") Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Tested-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Cc: Joao Martins <joao.m.martins@oracle.com> Link: https://lore.kernel.org/r/20200916111720.43913-1-suravee.suthikulpanit@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de>		2020-09-18 11:17:19 +02:00
..
amd_iommu_types.h
amd_iommu.h	iommu/amd: Make amd_iommu_apply_ivrs_quirks() static inline	2020-06-30 14:47:42 +02:00
debugfs.c
init.c	iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE	2020-09-04 11:53:18 +02:00
iommu_v2.c	iommu/amd: Do not use IOMMUv2 functionality when SME is active	2020-09-04 12:07:08 +02:00
iommu.c	iommu/amd: Restore IRTE.RemapEn bit for amd_iommu_activate_guest_mode	2020-09-18 11:17:19 +02:00
Kconfig	iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE	2020-09-04 11:53:18 +02:00
Makefile	iommu/amd: Move Kconfig and Makefile bits down into amd directory	2020-07-29 14:15:36 +02:00
quirks.c