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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-07-11 17:14:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-11 18:01:16 +0200 |
| commit | 5dc8bff0f6d0dfeb1f1c6e694294ba7c33d099f1 (patch) | |
| tree | 46aaf6e9c57eb392db59ad505fe444f20849284b /arch/x86/kernel/amd_iommu_init.c | |
| parent | 2e22847fbe05f2543ccebd0c2df94d9cf3c52aa5 (diff) | |
| download | kernel_samsung_aries-5dc8bff0f6d0dfeb1f1c6e694294ba7c33d099f1.zip kernel_samsung_aries-5dc8bff0f6d0dfeb1f1c6e694294ba7c33d099f1.tar.gz kernel_samsung_aries-5dc8bff0f6d0dfeb1f1c6e694294ba7c33d099f1.tar.bz2 | |
x86, AMD IOMMU: replace memset with __GFP_ZERO for table allocation
This patch removes the memset from the data structure initialization code and
allocate the structures with the __GFP_ZERO flag.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 0c24703..2efc3d5 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -890,7 +890,7 @@ int __init amd_iommu_init(void) ret = -ENOMEM; /* Device table - directly used by all IOMMUs */ - amd_iommu_dev_table = (void *)__get_free_pages(GFP_KERNEL, + amd_iommu_dev_table = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(dev_table_size)); if (amd_iommu_dev_table == NULL) goto out; @@ -914,27 +914,23 @@ int __init amd_iommu_init(void) * Protection Domain table - maps devices to protection domains * This table has the same size as the rlookup_table */ - amd_iommu_pd_table = (void *)__get_free_pages(GFP_KERNEL, + amd_iommu_pd_table = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(rlookup_table_size)); if (amd_iommu_pd_table == NULL) goto free; - amd_iommu_pd_alloc_bitmap = (void *)__get_free_pages(GFP_KERNEL, + amd_iommu_pd_alloc_bitmap = (void *)__get_free_pages( + GFP_KERNEL | __GFP_ZERO, get_order(MAX_DOMAIN_ID/8)); if (amd_iommu_pd_alloc_bitmap == NULL) goto free; /* - * memory is allocated now; initialize the device table with all zeroes - * and let all alias entries point to itself + * let all alias entries point to itself */ - memset(amd_iommu_dev_table, 0, dev_table_size); for (i = 0; i < amd_iommu_last_bdf; ++i) amd_iommu_alias_table[i] = i; - memset(amd_iommu_pd_table, 0, rlookup_table_size); - memset(amd_iommu_pd_alloc_bitmap, 0, MAX_DOMAIN_ID / 8); - /* * never allocate domain 0 because its used as the non-allocated and * error value placeholder |