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x86/amd-iommu: Remove support for domain sharing

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This patch makes device isolation mandatory and removes
support for the amd_iommu=share option. This simplifies the
code in several places.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-11-27 11:40:33 +01:00
parent 171e7b3739
commit 8793abeb78
3 changed files with 2 additions and 28 deletions
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17
arch/x86/kernel/amd_iommu_init.c
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@ -125,13 +125,6 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
#ifdef CONFIG_IOMMU_STRESS
bool amd_iommu_isolate = false;
#else
bool amd_iommu_isolate = true; /* if true, device isolation is
enabled */
#endif
bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
@ -1308,12 +1301,6 @@ static int __init amd_iommu_init(void)
if (iommu_pass_through)
goto out;
printk(KERN_INFO "AMD-Vi: device isolation ");
if (amd_iommu_isolate)
printk("enabled\n");
else
printk("disabled\n");
if (amd_iommu_unmap_flush)
printk(KERN_INFO "AMD-Vi: IO/TLB flush on unmap enabled\n");
else
@ -1387,10 +1374,6 @@ static int __init parse_amd_iommu_dump(char *str)
static int __init parse_amd_iommu_options(char *str)
{
for (; *str; ++str) {
if (strncmp(str, "isolate", 7) == 0)
amd_iommu_isolate = true;
if (strncmp(str, "share", 5) == 0)
amd_iommu_isolate = false;
if (strncmp(str, "fullflush", 9) == 0)
amd_iommu_unmap_flush = true;
}