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authorLinus Torvalds <torvalds@linux-foundation.org>2021-08-29 19:47:02 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2021-08-29 19:47:02 +0200
commitf20a2637b1b1851cb30fceab68c27aef5fd43a2c (patch)
treeedbbcc7542ff62be4b8af74c81d4942ef4988547 /drivers
parentMerge tag 'perf_urgent_for_v5.14' of git://git.kernel.org/pub/scm/linux/kerne... (diff)
parentPCI/MSI: Skip masking MSI-X on Xen PV (diff)
downloadlinux-f20a2637b1b1851cb30fceab68c27aef5fd43a2c.tar.xz
linux-f20a2637b1b1851cb30fceab68c27aef5fd43a2c.zip
Merge tag 'irq_urgent_for_v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/msi.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index e5e75331b415..3a9f4f8ad8f9 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -776,6 +776,9 @@ static void msix_mask_all(void __iomem *base, int tsize)
u32 ctrl = PCI_MSIX_ENTRY_CTRL_MASKBIT;
int i;
+ if (pci_msi_ignore_mask)
+ return;
+
for (i = 0; i < tsize; i++, base += PCI_MSIX_ENTRY_SIZE)
writel(ctrl, base + PCI_MSIX_ENTRY_VECTOR_CTRL);
}