[PATCH v4 03/13] iommu/amd: Move pt_root to struct amd_io_pgtable
From: Suravee Suthikulpanit
Date: Tue Dec 15 2020 - 02:36:48 EST
To better organize the data structure since it contains IO page table
related information.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
---
drivers/iommu/amd/amd_iommu.h | 2 +-
drivers/iommu/amd/amd_iommu_types.h | 2 +-
drivers/iommu/amd/iommu.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index 0817bc732d1a..b8dae3941f0f 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -105,7 +105,7 @@ static inline void *iommu_phys_to_virt(unsigned long paddr)
static inline
void amd_iommu_domain_set_pt_root(struct protection_domain *domain, u64 root)
{
- atomic64_set(&domain->pt_root, root);
+ atomic64_set(&domain->iop.pt_root, root);
}
static inline
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index 5d77f34e0fda..7c971c76d685 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -497,6 +497,7 @@ struct amd_io_pgtable {
struct io_pgtable iop;
int mode;
u64 *root;
+ atomic64_t pt_root; /* pgtable root and pgtable mode */
};
/*
@@ -510,7 +511,6 @@ struct protection_domain {
struct amd_io_pgtable iop;
spinlock_t lock; /* mostly used to lock the page table*/
u16 id; /* the domain id written to the device table */
- atomic64_t pt_root; /* pgtable root and pgtable mode */
int glx; /* Number of levels for GCR3 table */
u64 *gcr3_tbl; /* Guest CR3 table */
unsigned long flags; /* flags to find out type of domain */
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 45d3977d6c00..5b93536d6877 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -145,7 +145,7 @@ static struct protection_domain *to_pdomain(struct iommu_domain *dom)
static void amd_iommu_domain_get_pgtable(struct protection_domain *domain,
struct domain_pgtable *pgtable)
{
- u64 pt_root = atomic64_read(&domain->pt_root);
+ u64 pt_root = atomic64_read(&domain->iop.pt_root);
pgtable->root = (u64 *)(pt_root & PAGE_MASK);
pgtable->mode = pt_root & 7; /* lowest 3 bits encode pgtable mode */
--
2.17.1