linux/arch/x86
Jeremy Fitzhardinge 41f2e4771a xen: add support for PAT
Convert Linux PAT entries into Xen ones when constructing ptes.  Linux
doesn't use _PAGE_PAT for ptes, so the only difference in the first 4
entries is that Linux uses _PAGE_PWT for WC, whereas Xen (and default)
use it for WT.

xen_pte_val does the inverse conversion.

We hard-code assumptions about Linux's current PAT layout, but a
warning on the wrmsr to MSR_IA32_CR_PAT should point out any problems.
If necessary we could go to a more general table-based conversion between
Linux and Xen PAT entries.

hugetlbfs poses a problem at the moment, the x86 architecture uses the
same flag for _PAGE_PAT and _PAGE_PSE, which changes meaning depending
on which pagetable level we're using.  At the moment this should be OK
so long as nobody tries to do a pte_val on a hugetlbfs pte.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2010-10-22 12:57:31 -07:00
..
boot x86, setup: Fix earlyprintk=serial,0x3f8,115200 2010-09-21 10:18:33 -07:00
configs defconfig reduction 2010-08-14 22:26:53 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-03 11:28:58 +08:00
ia32 Don't dump task struct in a.out core-dumps 2010-10-14 10:57:40 -07:00
include/asm xen: don't map missing memory 2010-10-22 12:57:26 -07:00
kernel x86, AMD, MCE thresholding: Fix the MCi_MISCj iteration order 2010-10-11 11:04:36 +02:00
kvm KVM: x86: Move TSC reset out of vmcb_init 2010-10-11 12:36:07 +02:00
lguest lguest: update comments to reflect LHCALL_LOAD_GDT_ENTRY. 2010-09-21 10:54:02 +09:30
lib Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-13 10:35:48 -07:00
math-emu x86, fpu: Unbreak FPU emulation 2010-05-10 13:37:16 -07:00
mm x86, numa: For each node, register the memory blocks actually used 2010-10-11 15:26:15 -07:00
oprofile oprofile: Add Support for Intel CPU Family 6 / Model 29 2010-09-21 12:22:48 +02:00
pci x86/PCI: use for_each_pci_dev() 2010-07-30 09:47:33 -07:00
power x86, tsc, sched: Recompute cyc2ns_offset's during resume from sleep states 2010-08-20 14:59:02 +02:00
tools x86: Remove trailing spaces in messages 2010-02-07 17:47:51 +01:00
vdso Merge branches 'x86-cleanups-for-linus', 'x86-vmware-for-linus', 'x86-mtrr-for-linus', 'x86-apic-for-linus', 'x86-fpu-for-linus' and 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 16:22:59 -07:00
video
xen xen: add support for PAT 2010-10-22 12:57:31 -07:00
.gitignore add random binaries to .gitignore 2010-04-08 11:34:34 +02:00
Kbuild
Kconfig Replace Configure with Enable in description of MAXSMP 2010-08-21 12:38:58 -07:00
Kconfig.cpu Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:58:16 -07:00
Kconfig.debug Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:40:21 -07:00
Makefile x86, build: Disable -fPIE when compiling with CONFIG_CC_STACKPROTECTOR=y 2010-09-13 15:53:16 -07:00
Makefile_32.cpu Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:38:11 -08:00