linux-toradex.git/drivers/kvm, branch v2.6.23.12

KVM: VMX: Reset mmu context when entering real mode

2007-12-14T17:50:57+00:00

patch 8668a3c468ed55d19514117a5a959d91d3d03823 in mainline.

Resetting an SMP guest will force AP enter real mode (RESET) with
paging enabled in protected mode. While current enter_rmode() can
only handle mode switch from nonpaging mode to real mode which leads
to SMP reboot failure.

Fix by reloading the mmu context on entering real mode.

Signed-off-by: Yaozu (Eddie) Dong 
Signed-off-by: Qing He 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: VMX: Force vm86 mode if setting flags during real mode

2007-12-14T17:50:57+00:00

patch 78f7826868da8e27d097802139a3fec39f47f3b8 in mainline.

When resetting from userspace, we need to handle the flags being cleared
even after we are in real mode.

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

KVM: Skip pio instruction when it is emulated, not executed

2007-12-14T17:50:56+00:00

patch 0967b7bf1c22b55777aba46ff616547feed0b141 in mainline.

If we defer updating rip until pio instructions are executed, we have a
problem with reset:  a pio reset updates rip, and when the instruction
completes we skip the emulated instruction, pointing rip somewhere completely
unrelated.

Fix by updating rip when we see decode the instruction, not after emulation.

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

KVM: SVM: Fix FPU leak while emulating clts

2007-12-14T17:50:56+00:00

patch 404fb881b82cf0cf6981832f8d31a7484e4dee81 in mainline.

The clts code didn't use set_cr0 properly, so our lazy FPU
processing wasn't being done by the clts instruction at all.

(this isn't called on Intel as the hardware does the decode for us)

Signed-off-by: Amit Shah 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: Fix hang on uniprocessor

2007-12-14T17:50:56+00:00

This is not in mainline, as it was fixed differently in that tree.

first_cpu(cpus) returns the only CPU when NR_CPUS is 1 regardless of
the cpus mask. Therefore we avoid a kernel hang in
KVM_SET_MEMORY_REGION ioctl on uniprocessor by not entering the loop at
all.

Signed-off-by: Marko Kohtala 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: x86 emulator: Use emulator_write_emulated and not emulator_write_std

2007-12-14T17:50:56+00:00

patch 00b2ef475d4728ca53a2bc788c7978042907e354 in mainline.

emulator_write_std() is not implemented, and calling write_emulated should
work just as well in place of write_std.

Fixes emulator failures with the push r/m instruction.

Signed-off-by: Amit Shah 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: SVM: Intercept the 'invd' and 'wbinvd' instructions

2007-12-14T17:50:55+00:00

patch cf5a94d1331b411b84414c13e43f578260942d6b in mainline.

'invd' can destroy host data, and 'wbinvd' allows the guest to induce
long (milliseconds) latencies.

Noted by Ben Serebrin.

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

KVM: x86 emulator: invd instruction

2007-12-14T17:50:55+00:00

patch 651a3e29b3d19418d7a8a9787906061f9be7cc5f in mainline.

Emulate the 'invd' instruction (opcode 0f 08).

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

KVM: x86 emulator: fix access registers for instructions with ModR/M byte and Mod = 3

2007-12-14T17:50:55+00:00

patch 4e62417bf317504c0b85e0d7abd236f334f54eaf in mainline.

The patch belows changes the access type to register from memory for
instructions that are declared as SrcMem or DstMem, but have a
ModR/M byte with Mod = 3.

It fixes (at least) the lmsw and smsw instructions on an AMD64 CPU,
which are needed for FreeBSD.

Signed-off-by: Aurelien Jarno 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

KVM: x86 emulator: implement 'movnti mem, reg'

2007-12-14T17:50:55+00:00

patch a012e65aee48379a7a87eadafa74f878b61522b9 in mainline.

Implement emulation of instruction:
    movnti m32/m64, r32/r64
    opcode: 0x0f 0xc3

Needed to support Linux 2.6.16 as guest (used for mmio).

Signed-off-by: Sheng Yang 
Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman