diff options
Diffstat (limited to '0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch')
| -rw-r--r-- | 0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch b/0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch new file mode 100644 index 000000000..22b0c6e3e --- /dev/null +++ b/0003-x86-PCI-limit-the-size-of-the-64bit-BAR-to-256GB.patch @@ -0,0 +1,33 @@ +From e5d5c9682aa02a6b9c0c6bd446d433b924441679 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com> +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 <christian.koenig@amd.com> +--- + 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 + |