forked from luck/tmp_suning_uos_patched
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>
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28d0325ce6
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7e25a24229
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@ -39,7 +39,6 @@
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#include <linux/sysdev.h>
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#include <asm/cacheflush.h>
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#include <asm/iommu.h>
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#include <asm/e820.h>
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#include "pci.h"
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#define ROOT_SIZE VTD_PAGE_SIZE
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@ -1908,7 +1907,6 @@ static inline int iommu_prepare_rmrr_dev(struct dmar_rmrr_unit *rmrr,
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rmrr->end_address + 1);
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}
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#ifdef CONFIG_DMAR_GFX_WA
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struct iommu_prepare_data {
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struct pci_dev *pdev;
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int ret;
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@ -1943,6 +1941,7 @@ static int __init iommu_prepare_with_active_regions(struct pci_dev *pdev)
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return data.ret;
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}
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#ifdef CONFIG_DMAR_GFX_WA
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static void __init iommu_prepare_gfx_mapping(void)
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{
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struct pci_dev *pdev = NULL;
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@ -2081,7 +2080,6 @@ static int domain_add_dev_info(struct dmar_domain *domain,
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static int iommu_prepare_static_identity_mapping(void)
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{
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int i;
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struct pci_dev *pdev = NULL;
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int ret;
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@ -2091,17 +2089,10 @@ static int iommu_prepare_static_identity_mapping(void)
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printk(KERN_INFO "IOMMU: Setting identity map:\n");
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for_each_pci_dev(pdev) {
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for (i = 0; i < e820.nr_map; i++) {
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struct e820entry *ei = &e820.map[i];
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if (ei->type == E820_RAM) {
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ret = iommu_prepare_identity_map(pdev,
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ei->addr, ei->addr + ei->size);
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if (ret) {
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printk(KERN_INFO "1:1 mapping to one domain failed.\n");
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return -EFAULT;
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}
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}
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ret = iommu_prepare_with_active_regions(pdev);
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if (ret) {
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printk(KERN_INFO "1:1 mapping to one domain failed.\n");
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return -EFAULT;
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}
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ret = domain_add_dev_info(si_domain, pdev);
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if (ret)
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