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iommu/amd: Call domain_flush_complete() in update_domain()
author
Joerg Roedel
<jroedel@suse.de>
Mon, 4 May 2020 12:54:11 +0000
(14:54 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Wed, 27 May 2020 15:46:35 +0000
(17:46 +0200)
[ Upstream commit
f44a4d7e4f1cdef73c90b1dc749c4d8a7372a8eb
]
The update_domain() function is expected to also inform the hardware
about domain changes. This needs a COMPLETION_WAIT command to be sent
to all IOMMUs which use the domain.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Qian Cai <cai@lca.pw>
Link:
https://lore.kernel.org/r/20200504125413.16798-4-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/iommu/amd_iommu.c
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diff --git
a/drivers/iommu/amd_iommu.c
b/drivers/iommu/amd_iommu.c
index
bc77714
..
32de8e7
100644
(file)
--- a/
drivers/iommu/amd_iommu.c
+++ b/
drivers/iommu/amd_iommu.c
@@
-2386,6
+2386,7
@@
static void update_domain(struct protection_domain *domain)
domain_flush_devices(domain);
domain_flush_tlb_pde(domain);
+ domain_flush_complete(domain);
}
static int dir2prot(enum dma_data_direction direction)