[RFC PATCH v2 06/32] x86/pci: Use memremap when walking setup data
From: Brijesh Singh <hidden>
Date: 2017-03-02 15:29:51
Subsystem:
pci subsystem, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Bjorn Helgaas, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Possibly related (same subject, not in this thread)
- 2017-03-13 · Re: [RFC PATCH v2 06/32] x86/pci: Use memremap when walking setup data · Tom Lendacky <thomas.lendacky@amd.com>
- 2017-03-07 · Re: [RFC PATCH v2 06/32] x86/pci: Use memremap when walking setup data · Bjorn Helgaas <helgaas@kernel.org>
- 2017-03-03 · Re: [RFC PATCH v2 06/32] x86/pci: Use memremap when walking setup data · Tom Lendacky <thomas.lendacky@amd.com>
- 2017-03-03 · Re: [RFC PATCH v2 06/32] x86/pci: Use memremap when walking setup data · Bjorn Helgaas <helgaas@kernel.org>
From: Tom Lendacky <thomas.lendacky@amd.com> The use of ioremap will force the setup data to be mapped decrypted even though setup data is encrypted. Switch to using memremap which will be able to perform the proper mapping. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- arch/x86/pci/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index a4fdfa7..0b06670 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c@@ -691,7 +691,7 @@ int pcibios_add_device(struct pci_dev *dev) pa_data = boot_params.hdr.setup_data; while (pa_data) { - data = ioremap(pa_data, sizeof(*rom)); + data = memremap(pa_data, sizeof(*rom), MEMREMAP_WB); if (!data) return -ENOMEM;
@@ -710,7 +710,7 @@ int pcibios_add_device(struct pci_dev *dev) } } pa_data = data->next; - iounmap(data); + memunmap(data); } set_dma_domain_ops(dev); set_dev_domain_options(dev);