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Merge tag 'irq_urgent_for_v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull irq fix from Borislav Petkov:

 - Have msix_mask_all() check a global control which says whether MSI-X
   masking should be done and thus make it usable on Xen-PV too

* tag 'irq_urgent_for_v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  PCI/MSI: Skip masking MSI-X on Xen PV
This commit is contained in:
Linus Torvalds
2021-08-29 10:47:02 -07:00
parent 98d006eb49 1a519dc7a7
commit f20a2637b1
1 changed files with 3 additions and 0 deletions
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3
drivers/pci/msi.c
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@@ -776,6 +776,9 @@ static void msix_mask_all(void __iomem *base, int tsize)
u32 ctrl = PCI_MSIX_ENTRY_CTRL_MASKBIT; u32 ctrl = PCI_MSIX_ENTRY_CTRL_MASKBIT;
int i; int i;
if (pci_msi_ignore_mask)
return;
for (i = 0; i < tsize; i++, base += PCI_MSIX_ENTRY_SIZE) for (i = 0; i < tsize; i++, base += PCI_MSIX_ENTRY_SIZE)
writel(ctrl, base + PCI_MSIX_ENTRY_VECTOR_CTRL); writel(ctrl, base + PCI_MSIX_ENTRY_VECTOR_CTRL);
} }