diff options
| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2009-03-16 17:05:05 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2009-03-17 16:49:30 -0700 |
| commit | fa4b57cc045d6134b9862b2873f9c8ba9ed53ffe (patch) | |
| tree | 7c31d15426e29d86314545be3cf9553ab91ef574 /drivers/pci | |
| parent | 68a8ca593fac82e336a792226272455901fa83df (diff) | |
| download | op-kernel-dev-fa4b57cc045d6134b9862b2873f9c8ba9ed53ffe.zip op-kernel-dev-fa4b57cc045d6134b9862b2873f9c8ba9ed53ffe.tar.gz | |
x86, dmar: use atomic allocations for QI and Intr-remapping init
Impact: invalid use of GFP_KERNEL in interrupt context
Queued invalidation and interrupt-remapping will get initialized with
interrupts disabled (while enabling interrupt-remapping). So use
GFP_ATOMIC instead of GFP_KERNEL for memory alloacations.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/dmar.c | 6 | ||||
| -rw-r--r-- | drivers/pci/intr_remapping.c | 4 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index f180500..d313039 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -809,20 +809,20 @@ int dmar_enable_qi(struct intel_iommu *iommu) if (iommu->qi) return 0; - iommu->qi = kmalloc(sizeof(*qi), GFP_KERNEL); + iommu->qi = kmalloc(sizeof(*qi), GFP_ATOMIC); if (!iommu->qi) return -ENOMEM; qi = iommu->qi; - qi->desc = (void *)(get_zeroed_page(GFP_KERNEL)); + qi->desc = (void *)(get_zeroed_page(GFP_ATOMIC)); if (!qi->desc) { kfree(qi); iommu->qi = 0; return -ENOMEM; } - qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_KERNEL); + qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC); if (!qi->desc_status) { free_page((unsigned long) qi->desc); kfree(qi); diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index f7ecd85..bc5b697 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -447,12 +447,12 @@ static int setup_intr_remapping(struct intel_iommu *iommu, int mode) struct page *pages; ir_table = iommu->ir_table = kzalloc(sizeof(struct ir_table), - GFP_KERNEL); + GFP_ATOMIC); if (!iommu->ir_table) return -ENOMEM; - pages = alloc_pages(GFP_KERNEL | __GFP_ZERO, INTR_REMAP_PAGE_ORDER); + pages = alloc_pages(GFP_ATOMIC | __GFP_ZERO, INTR_REMAP_PAGE_ORDER); if (!pages) { printk(KERN_ERR "failed to allocate pages of order %d\n", |
