From e5d5c9682aa02a6b9c0c6bd446d433b924441679 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Tue, 28 Nov 2017 10:02:35 +0100 Subject: [PATCH 3/3] x86/PCI: limit the size of the 64bit BAR to 256GB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This avoids problems with Xen which hides some memory resources from the OS and potentially also allows memory hotplug while this fixup is enabled. Signed-off-by: Christian König --- arch/x86/pci/fixup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index c817ab85dc82..149adbc7f2a3 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -701,7 +701,7 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev) res->name = "PCI Bus 0000:00"; res->flags = IORESOURCE_PREFETCH | IORESOURCE_MEM | IORESOURCE_MEM_64 | IORESOURCE_WINDOW; - res->start = 0x100000000ull; + res->start = 0xbd00000000ull; res->end = 0xfd00000000ull - 1; /* Just grab the free area behind system memory for this */ -- 2.11.0