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Commit 4ca5ded2 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'x86-fixes-for-linus' of... 

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/agp: Fix agp_amd64_init regression
  x86: Add quirk for Intel DG45FC board to avoid low memory corruption
  x86: Add Dell OptiPlex 760 reboot quirk
  x86, UV: Fix RTC latency bug by reading replicated cachelines
  oprofile/x86: add Xeon 7500 series support
  oprofile/x86: fix crash when profiling more than 28 events
  lib/dma-debug.c: mark file-local struct symbol static.
  x86/amd-iommu: Fix deassignment of a device from the pt_domain
  x86/amd-iommu: Fix IOMMU-API initialization for iommu=pt
  x86/amd-iommu: Fix NULL pointer dereference in __detach_device()
  x86/amd-iommu: Fix possible integer overflow
parents ed23690d 61684cea

arch/x86/include/asm/amd_iommu_proto.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu); 
extern int amd_iommu_init_devices(void);

extern void amd_iommu_uninit_devices(void);

extern void amd_iommu_init_notifier(void);

extern void amd_iommu_init_api(void);

#ifndef CONFIG_AMD_IOMMU_STATS



static inline void amd_iommu_stats_init(void) { }

arch/x86/kernel/amd_iommu.c

+16 −7
Original line number Diff line number Diff line
@@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, 
{

	int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;

	struct amd_iommu *iommu;

	int i;

	unsigned long i;



#ifdef CONFIG_IOMMU_STRESS

	populate = false;
@@ -1489,11 +1489,14 @@ static void __detach_device(struct device *dev) 
{

	struct iommu_dev_data *dev_data = get_dev_data(dev);

	struct iommu_dev_data *alias_data;

	struct protection_domain *domain;

	unsigned long flags;



	BUG_ON(!dev_data->domain);



	spin_lock_irqsave(&dev_data->domain->lock, flags);

	domain = dev_data->domain;



	spin_lock_irqsave(&domain->lock, flags);



	if (dev_data->alias != dev) {

		alias_data = get_dev_data(dev_data->alias);
@@ -1504,13 +1507,15 @@ static void __detach_device(struct device *dev) 
	if (atomic_dec_and_test(&dev_data->bind))

		do_detach(dev);



	spin_unlock_irqrestore(&dev_data->domain->lock, flags);

	spin_unlock_irqrestore(&domain->lock, flags);



	/*

	 * If we run in passthrough mode the device must be assigned to the

	 * passthrough domain if it is detached from any other domain

	 * passthrough domain if it is detached from any other domain.

	 * Make sure we can deassign from the pt_domain itself.

	 */

	if (iommu_pass_through && dev_data->domain == NULL)

	if (iommu_pass_through &&

	    (dev_data->domain == NULL && domain != pt_domain))

		__attach_device(dev, pt_domain);

}
@@ -2218,6 +2223,12 @@ static struct dma_map_ops amd_iommu_dma_ops = { 
/*

 * The function which clues the AMD IOMMU driver into dma_ops.

 */



void __init amd_iommu_init_api(void)

{

	register_iommu(&amd_iommu_ops);

}



int __init amd_iommu_init_dma_ops(void)

{

	struct amd_iommu *iommu;
@@ -2253,8 +2264,6 @@ int __init amd_iommu_init_dma_ops(void) 
	/* Make the driver finally visible to the drivers */

	dma_ops = &amd_iommu_dma_ops;



	register_iommu(&amd_iommu_ops);



	amd_iommu_stats_init();



	return 0;

arch/x86/kernel/amd_iommu_init.c

+3 −0
Original line number Diff line number Diff line
@@ -1292,9 +1292,12 @@ static int __init amd_iommu_init(void) 
		ret = amd_iommu_init_passthrough();

	else

		ret = amd_iommu_init_dma_ops();



	if (ret)

		goto free;



	amd_iommu_init_api();



	amd_iommu_init_notifier();



	enable_iommus();

arch/x86/kernel/reboot.c

+9 −0
Original line number Diff line number Diff line
@@ -203,6 +203,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { 
			DMI_MATCH(DMI_BOARD_NAME, "0T656F"),

		},

	},

	{	/* Handle problems with rebooting on Dell OptiPlex 760 with 0G919G*/

		.callback = set_bios_reboot,

		.ident = "Dell OptiPlex 760",

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 760"),

			DMI_MATCH(DMI_BOARD_NAME, "0G919G"),

		},

	},

	{	/* Handle problems with rebooting on Dell 2400's */

		.callback = set_bios_reboot,

		.ident = "Dell PowerEdge 2400",

arch/x86/kernel/setup.c

+11 −3
Original line number Diff line number Diff line
@@ -642,19 +642,27 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = { 
			DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"),

		},

	},

	{

	/*

	 * AMI BIOS with low memory corruption was found on Intel DG45ID board.

	 * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will

	 * AMI BIOS with low memory corruption was found on Intel DG45ID and

	 * DG45FC boards.

	 * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will

	 * match only DMI_BOARD_NAME and see if there is more bad products

	 * with this vendor.

	 */

	{

		.callback = dmi_low_memory_corruption,

		.ident = "AMI BIOS",

		.matches = {

			DMI_MATCH(DMI_BOARD_NAME, "DG45ID"),

		},

	},

	{

		.callback = dmi_low_memory_corruption,

		.ident = "AMI BIOS",

		.matches = {

			DMI_MATCH(DMI_BOARD_NAME, "DG45FC"),

		},

	},

#endif

	{}

};