Messages in this thread Patch in this message | | | From | Baoquan He <> | Subject | [PATCH 08/10] iommu/amd: Do not update the information of domain to devtables before device driver init | Date | Thu, 24 Sep 2015 14:37:34 +0800 |
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update_domain() is the only place where domain->pt_root will be got and set into dev entry. So before the device driver initialization we do nothing if it's in previously enabled translation status.
Signed-off-by: Baoquan He <bhe@redhat.com> --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 0d59f79..aee1ae4 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2350,7 +2350,7 @@ static void update_device_table(struct protection_domain *domain) static void update_domain(struct protection_domain *domain) { - if (!domain->updated) + if (!domain->updated || translation_pre_enabled()) return; update_device_table(domain); -- 2.4.0
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