From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kuppuswamy Sathyanarayanan Subject: [PATCH v4 12/15] pci: Mark MSI data shared Date: Wed, 4 Aug 2021 17:52:15 -0700 Message-ID: <20210805005218.2912076-13-sathyanarayanan.kuppuswamy@linux.intel.com> References: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com> List-ID: Content-Type: text/plain; charset="us-ascii" To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Bjorn Helgaas , Richard Henderson , Thomas Bogendoerfer , James E J Bottomley , Helge Deller , "David S . Miller" , Arnd Bergmann , Jonathan Corbet , "Michael S . Tsirkin" Cc: Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, virtualization@lists.linux-foundation.org From: Andi Kleen In a TDX guest the MSI area must be shared with the host, so use a shared mapping. Signed-off-by: Andi Kleen Signed-off-by: Kuppuswamy Sathyanarayanan --- 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 9232255c8515..c6cf1b756d74 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -682,7 +682,7 @@ 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_shared(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE); } static int msix_setup_entries(struct pci_dev *dev, void __iomem *base, -- 2.25.1