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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-11-09 22:47:57 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2014-11-18 11:18:35 +0100 |
| commit | 78d8e7046111425bb688cddc4303d79cb0f0d281 (patch) | |
| tree | 5d3be87a35920d72efaf7100406c7058a3295f1e /drivers/iommu/intel-iommu.c | |
| parent | c2a0b538d2c778aef7bf2fbe7973229192c9a392 (diff) | |
| download | op-kernel-dev-78d8e7046111425bb688cddc4303d79cb0f0d281.zip op-kernel-dev-78d8e7046111425bb688cddc4303d79cb0f0d281.tar.gz | |
iommu/vt-d: Dynamically allocate and free seq_id for DMAR units
Introduce functions to support dynamic IOMMU seq_id allocating and
releasing, which will be used to support DMAR hotplug.
Also rename IOMMU_UNITS_SUPPORTED as DMAR_UNITS_SUPPORTED.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index b9cc9c2..2779354 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -330,17 +330,10 @@ static int hw_pass_through = 1; /* si_domain contains mulitple devices */ #define DOMAIN_FLAG_STATIC_IDENTITY (1 << 1) -/* define the limit of IOMMUs supported in each domain */ -#ifdef CONFIG_X86 -# define IOMMU_UNITS_SUPPORTED MAX_IO_APICS -#else -# define IOMMU_UNITS_SUPPORTED 64 -#endif - struct dmar_domain { int id; /* domain id */ int nid; /* node id */ - DECLARE_BITMAP(iommu_bmp, IOMMU_UNITS_SUPPORTED); + DECLARE_BITMAP(iommu_bmp, DMAR_UNITS_SUPPORTED); /* bitmap of iommus this domain uses*/ struct list_head devices; /* all devices' list */ @@ -2730,12 +2723,12 @@ static int __init init_dmars(void) * threaded kernel __init code path all other access are read * only */ - if (g_num_of_iommus < IOMMU_UNITS_SUPPORTED) { + if (g_num_of_iommus < DMAR_UNITS_SUPPORTED) { g_num_of_iommus++; continue; } printk_once(KERN_ERR "intel-iommu: exceeded %d IOMMUs\n", - IOMMU_UNITS_SUPPORTED); + DMAR_UNITS_SUPPORTED); } g_iommus = kcalloc(g_num_of_iommus, sizeof(struct intel_iommu *), |
