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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Currently, the RemapEn (valid) bit is accidentally cleared when programming IRTE w/ guestMode=0. It should be restored to the prior state. Signed-off-by: Suravee Suthikulpanit --- drivers/iommu/amd/iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index ba9f3dbc5b94..967f4e96d1eb 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -3850,6 +3850,7 @@ int amd_iommu_deactivate_guest_mode(void *data) struct amd_ir_data *ir_data = (struct amd_ir_data *)data; struct irte_ga *entry = (struct irte_ga *) ir_data->entry; struct irq_cfg *cfg = ir_data->cfg; + u64 valid = entry->lo.fields_remap.valid; if (!AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir) || !entry || !entry->lo.fields_vapic.guest_mode) @@ -3858,6 +3859,7 @@ int amd_iommu_deactivate_guest_mode(void *data) entry->lo.val = 0; entry->hi.val = 0; + entry->lo.fields_remap.valid = valid; entry->lo.fields_remap.dm = apic->irq_dest_mode; entry->lo.fields_remap.int_type = apic->irq_delivery_mode; entry->hi.fields.vector = cfg->vector; -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu