Commit a3cf6ab3 authored by Vasant Hegde's avatar Vasant Hegde Committed by Joerg Roedel
Browse files

iommu/amd: Flush upto last_bdf only 



Fix amd_iommu_flush_dte_all() and amd_iommu_flush_tlb_all() to flush
upto last_bdf only.

Co-developed-by: default avatarSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: default avatarSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: default avatarVasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220706113825.25582-29-vasant.hegde@amd.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 401360ec

drivers/iommu/amd/iommu.c

+6 −3
Original line number Diff line number Diff line
@@ -1191,8 +1191,9 @@ static int iommu_flush_dte(struct amd_iommu *iommu, u16 devid) 
static void amd_iommu_flush_dte_all(struct amd_iommu *iommu)

{

	u32 devid;

	u16 last_bdf = iommu->pci_seg->last_bdf;



	for (devid = 0; devid <= 0xffff; ++devid)

	for (devid = 0; devid <= last_bdf; ++devid)

		iommu_flush_dte(iommu, devid);



	iommu_completion_wait(iommu);
@@ -1205,8 +1206,9 @@ static void amd_iommu_flush_dte_all(struct amd_iommu *iommu) 
static void amd_iommu_flush_tlb_all(struct amd_iommu *iommu)

{

	u32 dom_id;

	u16 last_bdf = iommu->pci_seg->last_bdf;



	for (dom_id = 0; dom_id <= 0xffff; ++dom_id) {

	for (dom_id = 0; dom_id <= last_bdf; ++dom_id) {

		struct iommu_cmd cmd;

		build_inv_iommu_pages(&cmd, 0, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,

				      dom_id, 1);
@@ -1249,8 +1251,9 @@ static void iommu_flush_irt(struct amd_iommu *iommu, u16 devid) 
static void amd_iommu_flush_irt_all(struct amd_iommu *iommu)

{

	u32 devid;

	u16 last_bdf = iommu->pci_seg->last_bdf;



	for (devid = 0; devid <= MAX_DEV_TABLE_ENTRIES; devid++)

	for (devid = 0; devid <= last_bdf; devid++)

		iommu_flush_irt(iommu, devid);



	iommu_completion_wait(iommu);