Alex Chiang 012b7105cc [IA64] prevent MCA when performing MMIO mmap to PCI config space ... Example memory map (HP rx7640 with 'default' acpiconfig setting, VGA disabled): 0x00000000 - 0x3FFFBFFF supports only WB (cacheable) access If a user attempts to perform an MMIO mmap (using the PCIIOC_MMAP_IS_MEM ioctl) to PCI config space (like mmap'ing and accessing memory at 0xA0000), we will MCA because the kernel will attempt to use a mapping with the UC attribute. So check the memory attribute in kern_mmap and the EFI memmap. If WC is requested, and WC or UC access is supported for the region, allow it. Otherwise, use the same attribute the kernel uses. Updates documentation and test cases as well. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>		2007-07-11 11:34:49 -07:00
..
fixup.c	PCI: fix pci_fixup_video as it blows up on sparc64	2006-10-27 11:20:33 -07:00
Makefile	PCI: fix pci_fixup_video as it blows up on sparc64	2006-10-27 11:20:33 -07:00
pci.c	[IA64] prevent MCA when performing MMIO mmap to PCI config space	2007-07-11 11:34:49 -07:00