The patch titled
intel-iommu: fix for IOMMU early crash
has been added to the -mm tree. Its filename is
intel-iommu-fix-for-iommu-early-crash.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: intel-iommu: fix for IOMMU early crash
From: "Keshavamurthy, Anil S" <[EMAIL PROTECTED]>
pci_dev's->sysdata is highly overloaded and currently IOMMU is broken due
to IOMMU code depending on this field.
This patch introduces new field in pci_dev's struct to hold IOMMU specific
per device IOMMU private data.
Signed-off-by: Anil S Keshavamurthy <[EMAIL PROTECTED]>
Cc: Greg KH <[EMAIL PROTECTED]>
Cc: Jeff Garzik <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
diff -puN drivers/pci/intel-iommu.c~intel-iommu-fix-for-iommu-early-crash
drivers/pci/intel-iommu.c
--- a/drivers/pci/intel-iommu.c~intel-iommu-fix-for-iommu-early-crash
+++ a/drivers/pci/intel-iommu.c
@@ -1348,7 +1348,7 @@ static void domain_remove_dev_info(struc
list_del(&info->link);
list_del(&info->global);
if (info->dev)
- info->dev->sysdata = NULL;
+ info->dev->iommu_private = NULL;
spin_unlock_irqrestore(&device_domain_lock, flags);
detach_domain_for_dev(info->domain, info->bus, info->devfn);
@@ -1361,7 +1361,7 @@ static void domain_remove_dev_info(struc
/*
* find_domain
- * Note: we use struct pci_dev->sysdata stores the info
+ * Note: we use struct pci_dev->iommu_private stores the info
*/
struct dmar_domain *
find_domain(struct pci_dev *pdev)
@@ -1369,7 +1369,7 @@ find_domain(struct pci_dev *pdev)
struct device_domain_info *info;
/* No lock here, assumes no domain exit in normal case */
- info = pdev->sysdata;
+ info = pdev->iommu_private;
if (info)
return info->domain;
return NULL;
@@ -1519,7 +1519,7 @@ found_domain:
}
list_add(&info->link, &domain->devices);
list_add(&info->global, &device_domain_list);
- pdev->sysdata = info;
+ pdev->iommu_private = info;
spin_unlock_irqrestore(&device_domain_lock, flags);
return domain;
error:
@@ -1579,7 +1579,7 @@ error:
static inline int iommu_prepare_rmrr_dev(struct dmar_rmrr_unit *rmrr,
struct pci_dev *pdev)
{
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO)
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO)
return 0;
return iommu_prepare_identity_map(pdev, rmrr->base_address,
rmrr->end_address + 1);
@@ -1595,7 +1595,7 @@ static void __init iommu_prepare_gfx_map
int ret;
for_each_pci_dev(pdev) {
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO ||
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO ||
!IS_GFX_DEVICE(pdev))
continue;
printk(KERN_INFO "IOMMU: gfx device %s 1-1 mapping\n",
@@ -1836,7 +1836,7 @@ static dma_addr_t intel_map_single(struc
int prot = 0;
BUG_ON(dir == DMA_NONE);
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO)
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO)
return virt_to_bus(addr);
domain = get_valid_domain_for_dev(pdev);
@@ -1900,7 +1900,7 @@ static void intel_unmap_single(struct de
unsigned long start_addr;
struct iova *iova;
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO)
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO)
return;
domain = find_domain(pdev);
BUG_ON(!domain);
@@ -1974,7 +1974,7 @@ static void intel_unmap_sg(struct device
size_t size = 0;
void *addr;
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO)
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO)
return;
domain = find_domain(pdev);
@@ -2032,7 +2032,7 @@ static int intel_map_sg(struct device *h
unsigned long start_addr;
BUG_ON(dir == DMA_NONE);
- if (pdev->sysdata == DUMMY_DEVICE_DOMAIN_INFO)
+ if (pdev->iommu_private == DUMMY_DEVICE_DOMAIN_INFO)
return intel_nontranslate_map_sg(hwdev, sg, nelems, dir);
domain = get_valid_domain_for_dev(pdev);
@@ -2234,7 +2234,7 @@ static void __init init_no_remapping_dev
for (i = 0; i < drhd->devices_cnt; i++) {
if (!drhd->devices[i])
continue;
- drhd->devices[i]->sysdata = DUMMY_DEVICE_DOMAIN_INFO;
+ drhd->devices[i]->iommu_private =
DUMMY_DEVICE_DOMAIN_INFO;
}
}
}
diff -puN include/linux/pci.h~intel-iommu-fix-for-iommu-early-crash
include/linux/pci.h
--- a/include/linux/pci.h~intel-iommu-fix-for-iommu-early-crash
+++ a/include/linux/pci.h
@@ -195,6 +195,7 @@ struct pci_dev {
#ifdef CONFIG_PCI_MSI
struct list_head msi_list;
#endif
+ void *iommu_private; /* hook for IOMMU specific extension */
};
extern struct pci_dev *alloc_pci_dev(void);
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
optimize-x86-page-faults-like-all-other-achitectures-and-kill-notifier-cruft.patch
kprobes-support-kretprobe-blacklist.patch
intel-iommu-dmar-detection-and-parsing-logic.patch
intel-iommu-pci-generic-helper-function.patch
intel-iommu-clflush_cache_range-now-takes-size-param.patch
intel-iommu-iova-allocation-and-management-routines.patch
intel-iommu-intel-iommu-driver.patch
intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch
intel-iommu-intel-iommu-cmdline-option-forcedac.patch
intel-iommu-dmar-fault-handling-support.patch
intel-iommu-iommu-gfx-workaround.patch
intel-iommu-iommu-gfx-workaround-kconfig-fix.patch
intel-iommu-iommu-floppy-workaround.patch
intel-iommu-iommu-floppy-workaround-kconfig-fix.patch
intel-iommu-optimize-sg-map-unmap-calls.patch
intel-iommu-fix-for-iommu-early-crash.patch
intel-iommu-sg-chaining-support.patch
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