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iommu/amd: Flush upto last_bdf only

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

Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220706113825.25582-29-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Vasant Hegde 2022-07-06 17:08:18 +05:30 committed by Joerg Roedel
parent 401360ec98
commit a3cf6ab357
1 changed files with 6 additions and 3 deletions
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9
drivers/iommu/amd/iommu.c
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@ -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);