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| author | Chris Wright <chrisw@sous-sol.org> | 2010-04-02 18:27:53 -0700 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2010-04-07 11:51:15 +0200 |
| commit | 549c90dc9a6d659e792b2a42a0930c7da015ea4a (patch) | |
| tree | e0d0115631aa40eb45b58fb24bdcd399d2e17e47 /arch/x86/include/asm | |
| parent | 75f66533bc883f761a7adcab3281fe3323efbc90 (diff) | |
| download | lwn-549c90dc9a6d659e792b2a42a0930c7da015ea4a.tar.gz lwn-549c90dc9a6d659e792b2a42a0930c7da015ea4a.zip | |
x86/amd-iommu: warn when issuing command to uninitialized cmd buffer
To catch future potential issues we can add a warning whenever we issue
a command before the command buffer is fully initialized.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/amd_iommu_types.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 5e46e78f3b1b..86a0ff0aeac7 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -141,6 +141,7 @@ /* constants to configure the command buffer */ #define CMD_BUFFER_SIZE 8192 +#define CMD_BUFFER_UNINITIALIZED 1 #define CMD_BUFFER_ENTRIES 512 #define MMIO_CMD_SIZE_SHIFT 56 #define MMIO_CMD_SIZE_512 (0x9ULL << MMIO_CMD_SIZE_SHIFT) |