Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.4 36/49] iommu/amd: Call domain_flush_complete() in update_domain() | Date | Thu, 14 May 2020 14:52:57 -0400 |
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From: Joerg Roedel <jroedel@suse.de>
[ 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 | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index bc77714983421..32de8e7bb8b45 100644 --- 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) -- 2.20.1
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