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| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-14 12:00:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-14 12:00:36 -0300 |
| commit | 277a163c83d7ba93fba1e8980d29a9f8bfcfba6c (patch) | |
| tree | ccfd357d152292958957b6b8a993892e7a8cc95f /drivers/iommu/amd_iommu_init.c | |
| parent | a83b93a7480441a47856dc9104bea970e84cda87 (diff) | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
Merge tag 'v3.15-rc1' into patchwork
Linux 3.15-rc1
* tag 'v3.15-rc1': (12180 commits)
Linux 3.15-rc1
mm: Initialize error in shmem_file_aio_read()
cifs: Use min_t() when comparing "size_t" and "unsigned long"
sym53c8xx_2: Set DID_REQUEUE return code when aborting squeue
powerpc: Don't try to set LPCR unless we're in hypervisor mode
futex: update documentation for ordering guarantees
ceph: fix pr_fmt() redefinition
vti: don't allow to add the same tunnel twice
gre: don't allow to add the same tunnel twice
drivers: net: xen-netfront: fix array initialization bug
missing bits of "splice: fix racy pipe->buffers uses"
cifs: fix the race in cifs_writev()
ceph_sync_{,direct_}write: fix an oops on ceph_osdc_new_request() failure
pktgen: be friendly to LLTX devices
r8152: check RTL8152_UNPLUG
net: sun4i-emac: add promiscuous support
net/apne: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
blackfin: cleanup board files
bf609: clock: drop unused clock bit set/clear functions
Blackfin: bf537: rename "CONFIG_ADT75"
...
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 28b4bea7c10..b76c58dbe30 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -150,7 +150,7 @@ int amd_iommus_present; bool amd_iommu_np_cache __read_mostly; bool amd_iommu_iotlb_sup __read_mostly = true; -u32 amd_iommu_max_pasids __read_mostly = ~0; +u32 amd_iommu_max_pasid __read_mostly = ~0; bool amd_iommu_v2_present __read_mostly; bool amd_iommu_pc_present __read_mostly; @@ -1231,14 +1231,16 @@ static int iommu_init_pci(struct amd_iommu *iommu) if (iommu_feature(iommu, FEATURE_GT)) { int glxval; - u32 pasids; - u64 shift; + u32 max_pasid; + u64 pasmax; - shift = iommu->features & FEATURE_PASID_MASK; - shift >>= FEATURE_PASID_SHIFT; - pasids = (1 << shift); + pasmax = iommu->features & FEATURE_PASID_MASK; + pasmax >>= FEATURE_PASID_SHIFT; + max_pasid = (1 << (pasmax + 1)) - 1; - amd_iommu_max_pasids = min(amd_iommu_max_pasids, pasids); + amd_iommu_max_pasid = min(amd_iommu_max_pasid, max_pasid); + + BUG_ON(amd_iommu_max_pasid & ~PASID_MASK); glxval = iommu->features & FEATURE_GLXVAL_MASK; glxval >>= FEATURE_GLXVAL_SHIFT; |