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From: Kuppuswamy Sathyanarayanan  <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Richard Henderson <rth@twiddle.net>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	James E J Bottomley <James.Bottomley@HansenPartnership.com>,
	Helge Deller <deller@gmx.de>,
	"David S . Miller" <davem@davemloft.net>,
	Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
	"Michael S . Tsirkin" <mst@redhat.com>
Cc: Peter H Anvin <hpa@zytor.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Tony Luck <tony.luck@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Andi Kleen <ak@linux.intel.com>,
	Kirill Shutemov <kirill.shutemov@linux.intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	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
Subject: [PATCH v4 12/15] pci: Mark MSI data shared
Date: Wed,  4 Aug 2021 17:52:15 -0700	[thread overview]
Message-ID: <20210805005218.2912076-13-sathyanarayanan.kuppuswamy@linux.intel.com> (raw)
In-Reply-To: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com>

From: Andi Kleen <ak@linux.intel.com>

In a TDX guest the MSI area must be shared with the host, so use
a shared mapping.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
---
 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


  parent reply	other threads:[~2021-08-05  0:54 UTC|newest]

Thread overview: 129+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05  0:52 [PATCH v4 00/15] Add TDX Guest Support (shared-mm support) Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 01/15] x86/mm: Move force_dma_unencrypted() to common code Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 02/15] x86/tdx: Exclude Shared bit from physical_mask Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 03/15] x86/tdx: Make pages shared in ioremap() Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 04/15] x86/tdx: Add helper to do MapGPA hypercall Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 05/15] x86/tdx: Make DMA pages shared Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 06/15] x86/kvm: Use bounce buffers for TD guest Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 07/15] x86/tdx: ioapic: Add shared bit for IOAPIC base address Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 08/15] x86/tdx: Enable shared memory protected guest flags for TDX guest Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 09/15] pci: Consolidate pci_iomap* and pci_iomap*wc Kuppuswamy Sathyanarayanan
2021-08-12 19:43   ` Bjorn Helgaas
2021-08-12 19:43     ` Bjorn Helgaas
2021-08-12 19:43     ` Bjorn Helgaas
2021-08-12 22:11     ` Andi Kleen
2021-08-12 22:11       ` Andi Kleen
2021-08-12 22:11       ` Andi Kleen
2021-08-12 22:29     ` Kuppuswamy, Sathyanarayanan
2021-08-12 22:29       ` Kuppuswamy, Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 10/15] asm/io.h: Add ioremap_shared fallback Kuppuswamy Sathyanarayanan
2021-08-12 19:46   ` Bjorn Helgaas
2021-08-12 19:46     ` Bjorn Helgaas
2021-08-12 19:46     ` Bjorn Helgaas
2021-08-13  7:58   ` Christoph Hellwig
2021-08-13  7:58     ` Christoph Hellwig
2021-08-13  7:58     ` Christoph Hellwig
2021-08-05  0:52 ` [PATCH v4 11/15] pci: Add pci_iomap_shared{,_range} Kuppuswamy Sathyanarayanan
2021-08-13  8:02   ` Christoph Hellwig
2021-08-13  8:02     ` Christoph Hellwig
2021-08-13  8:02     ` Christoph Hellwig
2021-08-23 23:56   ` Michael S. Tsirkin
2021-08-23 23:56     ` Michael S. Tsirkin
2021-08-23 23:56     ` Michael S. Tsirkin
2021-08-24  0:30     ` Kuppuswamy, Sathyanarayanan
2021-08-24  0:30       ` Kuppuswamy, Sathyanarayanan
2021-08-24  1:04       ` Dan Williams
2021-08-24  1:04         ` Dan Williams
2021-08-24  1:04         ` Dan Williams
2021-08-24  2:14         ` Andi Kleen
2021-08-24  2:14           ` Andi Kleen
2021-08-24  2:14           ` Andi Kleen
2021-08-24  9:47           ` Michael S. Tsirkin
2021-08-24  9:47             ` Michael S. Tsirkin
2021-08-24  9:47             ` Michael S. Tsirkin
2021-08-24 17:20             ` Andi Kleen
2021-08-24 17:20               ` Andi Kleen
2021-08-24 17:20               ` Andi Kleen
2021-08-24 18:55               ` Bjorn Helgaas
2021-08-24 18:55                 ` Bjorn Helgaas
2021-08-24 18:55                 ` Bjorn Helgaas
2021-08-24 20:14                 ` Andi Kleen
2021-08-24 20:14                   ` Andi Kleen
2021-08-24 20:14                   ` Andi Kleen
2021-08-24 20:31                   ` Bjorn Helgaas
2021-08-24 20:31                     ` Bjorn Helgaas
2021-08-24 20:31                     ` Bjorn Helgaas
2021-08-24 20:50                     ` Andi Kleen
2021-08-24 20:50                       ` Andi Kleen
2021-08-24 20:50                       ` Andi Kleen
2021-08-24 21:05                       ` Dan Williams
2021-08-24 21:05                         ` Dan Williams
2021-08-24 21:05                         ` Dan Williams
2021-08-25 14:52                       ` Bjorn Helgaas
2021-08-25 14:52                         ` Bjorn Helgaas
2021-08-25 14:52                         ` Bjorn Helgaas
2021-08-24 21:55                 ` Rajat Jain
2021-08-24 21:55                   ` Rajat Jain
2021-08-29 15:27               ` Michael S. Tsirkin
2021-08-29 15:27                 ` Michael S. Tsirkin
2021-08-29 15:27                 ` Michael S. Tsirkin
2021-08-29 16:17                 ` Andi Kleen
2021-08-29 16:17                   ` Andi Kleen
2021-08-29 16:17                   ` Andi Kleen
2021-08-29 22:26                   ` Michael S. Tsirkin
2021-08-29 22:26                     ` Michael S. Tsirkin
2021-08-29 22:26                     ` Michael S. Tsirkin
2021-08-30  5:11                     ` Andi Kleen
2021-08-30  5:11                       ` Andi Kleen
2021-08-30  5:11                       ` Andi Kleen
2021-08-30 20:59                       ` Michael S. Tsirkin
2021-08-30 20:59                         ` Michael S. Tsirkin
2021-08-30 20:59                         ` Michael S. Tsirkin
2021-08-31  0:23                         ` Andi Kleen
2021-08-31  0:23                           ` Andi Kleen
2021-08-31  0:23                           ` Andi Kleen
2021-09-10  9:54                           ` Michael S. Tsirkin
2021-09-10  9:54                             ` Michael S. Tsirkin
2021-09-10  9:54                             ` Michael S. Tsirkin
2021-09-10 16:34                             ` Andi Kleen
2021-09-10 16:34                               ` Andi Kleen
2021-09-10 16:34                               ` Andi Kleen
2021-09-11 23:54                               ` Michael S. Tsirkin
2021-09-11 23:54                                 ` Michael S. Tsirkin
2021-09-11 23:54                                 ` Michael S. Tsirkin
2021-09-13  5:53                                 ` Michael S. Tsirkin
2021-09-13  5:53                                   ` Michael S. Tsirkin
2021-09-13  5:53                                   ` Michael S. Tsirkin
2021-09-24 22:43                                 ` Andi Kleen
2021-09-24 22:43                                   ` Andi Kleen
2021-09-24 22:43                                   ` Andi Kleen
2021-09-27  9:07                                   ` Michael S. Tsirkin
2021-09-27  9:07                                     ` Michael S. Tsirkin
2021-09-27  9:07                                     ` Michael S. Tsirkin
2021-08-24 21:56         ` Rajat Jain
2021-08-24 21:56           ` Rajat Jain
2021-08-24 21:59           ` Dan Williams
2021-08-24 21:59             ` Dan Williams
2021-08-24 21:59             ` Dan Williams
2021-08-24  7:07       ` Christoph Hellwig
2021-08-24  7:07         ` Christoph Hellwig
2021-08-24  7:07         ` Christoph Hellwig
2021-08-24 17:04         ` Andi Kleen
2021-08-24 17:04           ` Andi Kleen
2021-08-24 17:04           ` Andi Kleen
2021-08-29 15:34           ` Michael S. Tsirkin
2021-08-29 15:34             ` Michael S. Tsirkin
2021-08-29 15:34             ` Michael S. Tsirkin
2021-08-29 16:43             ` Andi Kleen
2021-08-29 16:43               ` Andi Kleen
2021-08-29 16:43               ` Andi Kleen
2021-08-24  9:12       ` Michael S. Tsirkin
2021-08-24  9:12         ` Michael S. Tsirkin
2021-08-24  9:12         ` Michael S. Tsirkin
2021-08-05  0:52 ` Kuppuswamy Sathyanarayanan [this message]
2021-08-13  8:07   ` [PATCH v4 12/15] pci: Mark MSI data shared Christoph Hellwig
2021-08-13  8:07     ` Christoph Hellwig
2021-08-13  8:07     ` Christoph Hellwig
2021-08-05  0:52 ` [PATCH v4 13/15] virtio: Use shared mappings for virtio PCI devices Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 14/15] x86/tdx: Implement ioremap_shared for x86 Kuppuswamy Sathyanarayanan
2021-08-05  0:52 ` [PATCH v4 15/15] x86/tdx: Add cmdline option to force use of ioremap_shared Kuppuswamy Sathyanarayanan

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