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Commit bf71d0e1 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'stable/for-linus-3.6-rc4-tag' of... 

Merge tag 'stable/for-linus-3.6-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
 * Fix for TLB flushing introduced in v3.6
 * Fix Xen-SWIOTLB not using proper DMA mask - device had 64bit but
   in a 32-bit kernel we need to allocate for coherent pages from a
   32-bit pool.
 * When trying to re-use P2M nodes we had a one-off error and triggered
   a BUG_ON check with specific CONFIG_ option.
 * When doing FLR in Xen-PCI-backend we would first do FLR then save the
   PCI configuration space. We needed to do it the other way around.

* tag 'stable/for-linus-3.6-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/pciback: Fix proper FLR steps.
  xen: Use correct masking in xen_swiotlb_alloc_coherent.
  xen: fix logical error in tlb flushing
  xen/p2m: Fix one-off error in checking the P2M tree directory.
parents f8b9cf0f 80ba77df

arch/x86/xen/mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -1283,7 +1283,7 @@ static void xen_flush_tlb_others(const struct cpumask *cpus, 
	cpumask_clear_cpu(smp_processor_id(), to_cpumask(args->mask));



	args->op.cmd = MMUEXT_TLB_FLUSH_MULTI;

	if (start != TLB_FLUSH_ALL && (end - start) <= PAGE_SIZE) {

	if (end != TLB_FLUSH_ALL && (end - start) <= PAGE_SIZE) {

		args->op.cmd = MMUEXT_INVLPG_MULTI;

		args->op.arg1.linear_addr = start;

	}

arch/x86/xen/p2m.c

+1 −1
Original line number Diff line number Diff line
@@ -599,7 +599,7 @@ bool __init early_can_reuse_p2m_middle(unsigned long set_pfn, unsigned long set_ 
	if (p2m_index(set_pfn))

		return false;



	for (pfn = 0; pfn <= MAX_DOMAIN_PAGES; pfn += P2M_PER_PAGE) {

	for (pfn = 0; pfn < MAX_DOMAIN_PAGES; pfn += P2M_PER_PAGE) {

		topidx = p2m_top_index(pfn);



		if (!p2m_top[topidx])

drivers/xen/swiotlb-xen.c

+1 −1
Original line number Diff line number Diff line
@@ -232,7 +232,7 @@ xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size, 
		return ret;



	if (hwdev && hwdev->coherent_dma_mask)

		dma_mask = hwdev->coherent_dma_mask;

		dma_mask = dma_alloc_coherent_mask(hwdev, flags);



	phys = virt_to_phys(ret);

	dev_addr = xen_phys_to_bus(phys);

drivers/xen/xen-pciback/pci_stub.c

+4 −4
Original line number Diff line number Diff line
@@ -353,16 +353,16 @@ static int __devinit pcistub_init_device(struct pci_dev *dev) 
	if (err)

		goto config_release;



	dev_dbg(&dev->dev, "reseting (FLR, D3, etc) the device\n");

	__pci_reset_function_locked(dev);



	/* We need the device active to save the state. */

	dev_dbg(&dev->dev, "save state of device\n");

	pci_save_state(dev);

	dev_data->pci_saved_state = pci_store_saved_state(dev);

	if (!dev_data->pci_saved_state)

		dev_err(&dev->dev, "Could not store PCI conf saved state!\n");



	else {

		dev_dbg(&dev->dev, "reseting (FLR, D3, etc) the device\n");

		__pci_reset_function_locked(dev);

	}

	/* Now disable the device (this also ensures some private device

	 * data is setup before we export)

	 */