linux-toradex.git/include/asm-x86/kvm_host.h, branch v2.6.27.39

KVM: Reduce stack usage in kvm_pv_mmu_op()

2009-09-09T03:17:12+00:00

(cherry picked from commit 6ad18fba05228fb1d47cdbc0339fe8b3fca1ca26)

We're in a hot path.  We can't use kmalloc() because
it might impact performance.  So, we just stick the buffer that
we need into the kvm_vcpu_arch structure.  This is used very
often, so it is not really a waste.

We also have to move the buffer structure's definition to the
arch-specific x86 kvm header.

Signed-off-by: Dave Hansen 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot

2008-08-25T14:22:57+00:00

vmlinux.lds expects the fixup code to be on a section named .fixup. The
.text.fixup section is not mentioned on vmlinux.lds, and is included on
the resulting vmlinux (just after .text) only because of ld heuristics on
placing orphan sections.

However, placing .text.fixup outside .text breaks the definition of
_etext, making it exclude the .text.fixup contents. That makes .text.fixup
be ignored by the kernel initialization code that needs to know about
section locations, such as the code setting page protection bits.

Signed-off-by: Eduardo Habkost 
Signed-off-by: Avi Kivity

KVM: Synchronize guest physical memory map to host virtual memory map

2008-07-29T09:33:53+00:00

Synchronize changes to host virtual addresses which are part of
a KVM memory slot to the KVM shadow mmu.  This allows pte operations
like swapping, page migration, and madvise() to transparently work
with KVM.

Signed-off-by: Andrea Arcangeli 
Signed-off-by: Avi Kivity

KVM: SVM: allow enabling/disabling NPT by reloading only the architecture module

2008-07-27T08:34:09+00:00

If NPT is enabled after loading both KVM modules on AMD and it should be
disabled, both KVM modules must be reloaded. If only the architecture module is
reloaded the behavior is undefined. With this patch it is possible to disable
NPT only by reloading the kvm_amd module.

Signed-off-by: Joerg Roedel 
Signed-off-by: Avi Kivity

KVM: fix exception entry / build bug, on 64-bit

2008-07-21T09:03:32+00:00

-tip testing found this build bug:

 arch/x86/kvm/built-in.o:(.text.fixup+0x1): relocation truncated to fit: R_X86_64_32 against `.text'
 arch/x86/kvm/built-in.o:(.text.fixup+0xb): relocation truncated to fit: R_X86_64_32 against `.text'
 arch/x86/kvm/built-in.o:(.text.fixup+0x15): relocation truncated to fit: R_X86_64_32 against `.text'
 arch/x86/kvm/built-in.o:(.text.fixup+0x1f): relocation truncated to fit: R_X86_64_32 against `.text'
 arch/x86/kvm/built-in.o:(.text.fixup+0x29): relocation truncated to fit: R_X86_64_32 against `.text'

Introduced by commit 4ecac3fd. The problem is that 'push' will default
to 32-bit, which is not wide enough as a fixup address. (and which would
crash on any real fixup event even if it was wide enough)

Introduce KVM_EX_PUSH to get the proper address push width on 64-bit too.

Signed-off-by: Ingo Molnar

KVM: Prefix some x86 low level function with kvm_, to avoid namespace issues

2008-07-20T09:42:39+00:00

Fixes compilation with CONFIG_VMI enabled.

Signed-off-by: Avi Kivity

KVM: Add coalesced MMIO support (x86 part)

2008-07-20T09:42:31+00:00

This patch enables coalesced MMIO for x86 architecture.
It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO.
It enables the compilation of coalesced_mmio.c.

Signed-off-by: Laurent Vivier 
Signed-off-by: Avi Kivity

KVM: Prefixes segment functions that will be exported with "kvm_"

2008-07-20T09:42:27+00:00

Prefixes functions that will be exported with kvm_.
We also prefixed set_segment() even if it still static
to be coherent.

signed-off-by: Guillaume Thouvenin 
Signed-off-by: Laurent Vivier 
Signed-off-by: Avi Kivity

KVM: MTRR support

2008-07-20T09:42:26+00:00

Add emulation for the memory type range registers, needed by VMware esx 3.5,
and by pci device assignment.

Signed-off-by: Avi Kivity

KVM: Order segment register constants in the same way as cpu operand encoding

2008-07-20T09:42:26+00:00

This can be used to simplify the x86 instruction decoder.

Signed-off-by: Avi Kivity