hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

iommu/vt-d: Get rid of iommu_attach_vm_domain() 

The special case for VM domains is not needed, as other
domains could be attached to the iommu in the same way. So
get rid of this special case.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2015-07-21 11:18:21 +02:00
parent 8bf478163e
commit e2411427f7
1 changed files with 10 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/iommu/intel-iommu.c
View File

@ -1671,8 +1671,13 @@ static int __iommu_attach_domain(struct dmar_domain *domain,
int num;
unsigned long ndomains;
num = domain->iommu_did[iommu->seq_id];
if (num)
return num;
ndomains = cap_ndoms(iommu->cap);
num = find_first_zero_bit(iommu->domain_ids, ndomains);
num = find_first_zero_bit(iommu->domain_ids, ndomains);
if (num < ndomains) {
set_bit(num, iommu->domain_ids);
set_iommu_domain(iommu, num, domain);
@ -1681,6 +1686,9 @@ static int __iommu_attach_domain(struct dmar_domain *domain,
num = -ENOSPC;
}
if (num < 0)
pr_err("%s: No free domain ids\n", iommu->name);
return num;
}
@ -1693,24 +1701,10 @@ static int iommu_attach_domain(struct dmar_domain *domain,
spin_lock_irqsave(&iommu->lock, flags);
num = __iommu_attach_domain(domain, iommu);
spin_unlock_irqrestore(&iommu->lock, flags);
if (num < 0)
pr_err("%s: No free domain ids\n", iommu->name);
return num;
}
static int iommu_attach_vm_domain(struct dmar_domain *domain,
struct intel_iommu *iommu)
{
int num;
num = domain->iommu_did[iommu->seq_id];
if (num)
return num;
return __iommu_attach_domain(domain, iommu);
}
static void iommu_detach_domain(struct dmar_domain *domain,
struct intel_iommu *iommu)
{
@ -1947,7 +1941,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
if (domain_type_is_vm_or_si(domain)) {
if (domain_type_is_vm(domain)) {
id = iommu_attach_vm_domain(domain, iommu);
id = __iommu_attach_domain(domain, iommu);
if (id < 0) {
spin_unlock_irqrestore(&iommu->lock, flags);
pr_err("%s: No free domain ids\n", iommu->name);