[PATCH v5 13/16] PCI: Mark MSI data shared
From: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>
Date: 2021-10-09 00:38:58
Also in:
linux-arch, linux-doc, linux-mips, linux-pci, lkml, sparclinux
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
From: Andi Kleen <redacted> In a TDX guest the MSI area must be shared with the host, so use a shared mapping. Signed-off-by: Andi Kleen <redacted> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> --- Changes since v4: * Replaced ioremap_shared() with ioremap_host_shared() drivers/pci/msi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 0099a00af361..198ef6e6ca4f 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c@@ -596,7 +596,7 @@ static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries) table_offset &= PCI_MSIX_TABLE_OFFSET; phys_addr = pci_resource_start(dev, bir) + table_offset; - return ioremap(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE); + return ioremap_host_shared(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE); } static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
--
2.25.1