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intel-iommu: fix Identity Mapping to be arch independent 

Drop the e820 scanning and use existing function for finding valid
RAM regions to add to 1:1 mapping.

Signed-off-by: Chris Wright <chrisw@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Chris Wright 2009-06-25 18:52:05 -07:00 committed by David Woodhouse
parent 28d0325ce6
commit 7e25a24229
1 changed files with 5 additions and 14 deletions
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19
drivers/pci/intel-iommu.c
View File

@ -39,7 +39,6 @@
#include <linux/sysdev.h>
#include <asm/cacheflush.h>
#include <asm/iommu.h>
#include <asm/e820.h>
#include "pci.h"
#define ROOT_SIZE VTD_PAGE_SIZE
@ -1908,7 +1907,6 @@ static inline int iommu_prepare_rmrr_dev(struct dmar_rmrr_unit *rmrr,
rmrr->end_address + 1);
}
#ifdef CONFIG_DMAR_GFX_WA
struct iommu_prepare_data {
struct pci_dev *pdev;
int ret;
@ -1943,6 +1941,7 @@ static int __init iommu_prepare_with_active_regions(struct pci_dev *pdev)
return data.ret;
}
#ifdef CONFIG_DMAR_GFX_WA
static void __init iommu_prepare_gfx_mapping(void)
{
struct pci_dev *pdev = NULL;
@ -2081,7 +2080,6 @@ static int domain_add_dev_info(struct dmar_domain *domain,
static int iommu_prepare_static_identity_mapping(void)
{
int i;
struct pci_dev *pdev = NULL;
int ret;
@ -2091,17 +2089,10 @@ static int iommu_prepare_static_identity_mapping(void)
printk(KERN_INFO "IOMMU: Setting identity map:\n");
for_each_pci_dev(pdev) {
for (i = 0; i < e820.nr_map; i++) {
struct e820entry *ei = &e820.map[i];
if (ei->type == E820_RAM) {
ret = iommu_prepare_identity_map(pdev,
ei->addr, ei->addr + ei->size);
if (ret) {
printk(KERN_INFO "1:1 mapping to one domain failed.\n");
return -EFAULT;
}
}
ret = iommu_prepare_with_active_regions(pdev);
if (ret) {
printk(KERN_INFO "1:1 mapping to one domain failed.\n");
return -EFAULT;
}
ret = domain_add_dev_info(si_domain, pdev);
if (ret)