diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-25 13:51:46 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-25 13:51:46 +0100 |
| commit | 0b271ef4521756010675b1611bef20fd3096790d (patch) | |
| tree | 2c9d22a2c74122a9904e533df27f41d63ffef394 /arch/x86/kernel/amd_iommu_init.c | |
| parent | b19b3c74c7bbec45a848631b8f970ac110665a01 (diff) | |
| parent | 4a6908a3a050aacc9c3a2f36b276b46c0629ad91 (diff) | |
Merge commit 'v2.6.28' into core/core
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 30ae2701b3d..c6cc22815d3 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -427,6 +427,10 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu) memcpy_toio(iommu->mmio_base + MMIO_CMD_BUF_OFFSET, &entry, sizeof(entry)); + /* set head and tail to zero manually */ + writel(0x00, iommu->mmio_base + MMIO_CMD_HEAD_OFFSET); + writel(0x00, iommu->mmio_base + MMIO_CMD_TAIL_OFFSET); + iommu_feature_enable(iommu, CONTROL_CMDBUF_EN); return cmd_buf; @@ -1074,7 +1078,8 @@ int __init amd_iommu_init(void) goto free; /* IOMMU rlookup table - find the IOMMU for a specific device */ - amd_iommu_rlookup_table = (void *)__get_free_pages(GFP_KERNEL, + amd_iommu_rlookup_table = (void *)__get_free_pages( + GFP_KERNEL | __GFP_ZERO, get_order(rlookup_table_size)); if (amd_iommu_rlookup_table == NULL) goto free; |