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Message-Id: <20200514185147.19716-42-sashal@kernel.org>
Date: Thu, 14 May 2020 14:51:27 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Joerg Roedel <jroedel@...e.de>, Qian Cai <cai@....pw>,
Sasha Levin <sashal@...nel.org>,
iommu@...ts.linux-foundation.org
Subject: [PATCH AUTOSEL 5.6 42/62] iommu/amd: Call domain_flush_complete() in update_domain()
From: Joerg Roedel <jroedel@...e.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@...e.de>
Tested-by: Qian Cai <cai@....pw>
Link: https://lore.kernel.org/r/20200504125413.16798-4-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.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 68da484a69dd0..d2499c86d395c 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2321,6 +2321,7 @@ static void update_domain(struct protection_domain *domain)
domain_flush_devices(domain);
domain_flush_tlb_pde(domain);
+ domain_flush_complete(domain);
}
int __init amd_iommu_init_api(void)
--
2.20.1
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