Il 04/07/2013 14:38, Marc Zyngier ha scritto:
> Sent v2 with fixes. If you're pleased with it, do you want another pull
> request? Or will you just pick that patch?
Since it would be a fast forward, I can (and did) just pick that patch.
Paolo
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Il 14/07/2013 12:19, Gleb Natapov ha scritto:
> On Sun, Jul 14, 2013 at 12:25:16PM +0300, Gleb Natapov wrote:
>> On Thu, Jul 04, 2013 at 08:54:32AM +0200, Paolo Bonzini wrote:
>>> Il 03/07/2013 18:33, Cornelia Huck ha scritto:
>>>> On Wed, 03 Jul 2013 17:30:40 +
Il 16/07/2013 07:09, Naor Shlomo ha scritto:
> Hi,
>
> I am trying to disable the mergeable rx buffers for a Linux guest but I am
> currently unable to do so.
>
> I tried looking in the code of libvirt in order to find the "-global
> virtio-net-pci.mrg_rxbuf=off" but the only globals configured
Il 16/07/2013 08:40, Naor Shlomo ha scritto:
> Hi Paolo and thanks for your quick reply,
>
> I tried editing (virsh edit) the domain's XML and put the XML excerpt you
> gave me everywhere but with no success.
> The moment I exit the edit mode the text was gone (I guess it didn't pass
> some sort
. Can you post here the full XML, and the one you're trying to use?
Paolo
> Naor
>
> -Original Message-
> From: Paolo Bonzini [mailto:pbonz...@redhat.com]
> Sent: Tuesday, July 16, 2013 9:42 AM
> To: Naor Shlomo
> Cc: kvm@vger.kernel.org
> Subject: Re: Disa
Il 16/07/2013 11:27, Arthur Chunqi Li ha scritto:
> This is the first version for VMX nested environment test case. It
> contains the basic VMX instructions test cases, including VMXON/
> VMXOFF/VMXPTRLD/VMXPTRST/VMCLEAR/VMLAUNCH/VMRESUME/VMCALL. This patch
> also tests the basic execution routine
ight one is (or at this point I'd better say "should be"):
Paolo
>
>
> Naor
>
> -Original Message-
> From: Paolo Bonzini [mailto:pbonz...@redhat.com]
> Sent: Tuesday, July 16, 2013 12:36 PM
> To: Naor Shlomo
> Cc: kvm@vger.kernel.org
>
Il 15/07/2013 10:04, Arthur Chunqi Li ha scritto:
> When L2 exits to L1, segment infomations of L1 are not set correctly.
> According to Intel SDM 27.5.2(Loading Host Segment and Descriptor
> Table Registers), segment base/limit/access right of L1 should be
> set to some designed value when L2 exit
Il 16/07/2013 13:42, Gleb Natapov ha scritto:
> On Sun, Jul 07, 2013 at 11:13:37PM +0800, Arthur Chunqi Li wrote:
>> The recent KVM patch adds IA32_FEATURE_CONTROL support. QEMU needs
>> to clear this MSR when reset vCPU and keep the value of it when
>> migration. This patch add this feature.
>>
>
Il 16/07/2013 13:47, Arthur Chunqi Li ha scritto:
> setjmp and longjmp is not implemented in our test environment, and
> these two functions are highly depend on architecture. Do you think we
> need to write a general code for both 32bit and 64bit, or just write
> specific one just for this test ca
Il 16/07/2013 17:11, Arthur Chunqi Li ha scritto:
> Add setjmp and longjmp functions to libcflat. Now these two functions
> are only supported in X86_64 arch.
>
> New files added:
> lib/x86/setjmp64.S
> lib/x86/setjmp64.c
>
> Signed-off-by: Arthur Chunqi Li
> ---
> config-x86_64.mak
Il 16/07/2013 19:13, Arthur Chunqi Li ha scritto:
> On Wed, Jul 17, 2013 at 12:45 AM, Gleb Natapov wrote:
>> On Tue, Jul 16, 2013 at 11:29:20PM +0800, Arthur Chunqi Li wrote:
>>> On Tue, Jul 16, 2013 at 11:20 PM, Gleb Natapov wrote:
>>>> On Tue, Jul 16, 2013 at 1
Il 17/07/2013 08:21, Gleb Natapov ha scritto:
> On Wed, Jul 17, 2013 at 02:08:54PM +0800, Arthur Chunqi Li wrote:
> > Hi Gleb and Paolo,
> > As your suggestion, I add general interface for adding test suite in
> > this version. It is similar to the achievement of x86/vmx.c, and I
> > also move test
Il 17/07/2013 08:05, Arthur Chunqi Li ha scritto:
> + guest_rip = vmcs_read(GUEST_RIP);
> + reason = vmcs_read(EXI_REASON) & 0xff;
> +
> + switch (reason) {
> + case VMX_VMCALL:
> + print_vmexit_info();
> + vmcs_write(GUEST_RIP, guest_rip + 3);
> +
Il 17/07/2013 11:03, Gleb Natapov ha scritto:
> On Wed, Jul 17, 2013 at 09:52:57AM +0200, Paolo Bonzini wrote:
>> Il 17/07/2013 08:21, Gleb Natapov ha scritto:
>>> On Wed, Jul 17, 2013 at 02:08:54PM +0800, Arthur Chunqi Li wrote:
>>>> Hi Gleb and Paolo,
>>
Il 17/07/2013 12:31, Gleb Natapov ha scritto:
> On Wed, Jul 17, 2013 at 12:19:32PM +0200, Paolo Bonzini wrote:
>> Il 17/07/2013 11:03, Gleb Natapov ha scritto:
>>> This is not about taste, this is about hackability of the code. I will
>>> maintain it
>>> and I
Il 17/07/2013 15:48, Arthur Chunqi Li ha scritto:
> Actually, both structure are kind to me and except for some concerns
> Gleb's solutions seems easier to read.
>
> The first concern is Gleb's way cannot set a seperate stack for
> HOST_RSP, which I predefined this can be set by test suite's init
Il 17/07/2013 20:54, Arthur Chunqi Li ha scritto:
> +/* entry_sysenter */
> +asm(
> + ".align 4, 0x90\n\t"
> + ".globl entry_sysenter\n\t"
> + "entry_sysenter:\n\t"
> + SAVE_GPR
> + " and $0xf, %rax\n\t"
> + " push%rax\n\t"
push should be wrong here, the
Il 17/07/2013 18:16, Dave Hansen ha scritto:
> I'm causing qemu to spew these emulation failure messages until I kill
> it. The guest kernel being run has been hacked up pretty heavily and is
> probably either accessing bad physical addresses (above the address
> ranges in the e820 table) or tryin
Il 18/07/2013 09:26, Gleb Natapov ha scritto:
> > I had written a long explanation here about why I don't trust the
> > compiler to do the right thing, and ideas about how to fix that. But in
> > the end the only workable solution is a single assembly blob like vmx.c
> > in KVM to do vmlaunch/vmre
Il 18/07/2013 13:06, Gleb Natapov ha scritto:
> On Thu, Jul 18, 2013 at 12:47:46PM +0200, Paolo Bonzini wrote:
>>>> and for a testsuite I'd prefer the latter---which means I'd still favor
>>>> setjmp/longjmp.
>>>>
>>>> Now, here is the
Il 11/07/2013 12:41, Christian Borntraeger ha scritto:
> On 11/07/13 11:04, Gleb Natapov wrote:
>> On Wed, Jul 10, 2013 at 02:59:55PM +0200, Dominik Dingel wrote:
>>> This patch enables async page faults for s390 kvm guests.
>>> It provides the userspace API to enable, disable or get the status of
Il 18/07/2013 21:57, Gleb Natapov ha scritto:
> On Thu, Jul 18, 2013 at 02:08:51PM +0200, Paolo Bonzini wrote:
>> Il 18/07/2013 13:06, Gleb Natapov ha scritto:
>>> On Thu, Jul 18, 2013 at 12:47:46PM +0200, Paolo Bonzini wrote:
>>>>>> and for a testsuite I&#
Il 19/07/2013 11:40, Gleb Natapov ha scritto:
>> Because this is written in C, and I know trying to fool the compiler is
>> a losing game. So my reaction is "okay, HOST_RIP must be set so that
>> code will not jump around". If I see
>>
>>asm("vmlaunch")
>>exit(-1)
>>
>> the reaction is th
lso check
> KVM_CPUID_SIGNATURE_NEXT which were set when kvm emulate hyperv.
>
> Cc: Gleb Natapov
> Cc: Paolo Bonzini
> Cc: Vadim Rozenfeld
> Cc: K. Y. Srinivasan
> Cc: Thomas Gleixner
> Cc: Ingo Molnar
> Cc: "H. Peter Anvin"
> Signed-off-by: Jason Wang
>
Linus,
The following changes since commit ad81f0545ef01ea651886dddac4bef6cec930092:
Linux 3.11-rc1 (2013-07-14 15:18:27 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus
for you to fetch changes up to 1c118b8226922d225a7df4127926ed2
Il 19/07/2013 22:59, H. Peter Anvin ha scritto:
>>> >> -cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
>>> >> -memcpy(signature + 0, &ebx, 4);
>>> >> -memcpy(signature + 4, &ecx, 4);
>>> >> -memcpy(signature + 8, &edx, 4);
>>> >>
Il 23/07/2013 12:04, H. Peter Anvin ha scritto:
> On 07/23/2013 02:41 AM, Jason Wang wrote:
>>
>> +static inline uint32_t hypervisor_cpuid_base(const char *sig, uint32_t
>> leaves)
>> +{
>> +uint32_t base, eax, ebx, ecx, edx;
>> +char signature[13];
>> +
>> +for (base = 0x4000; b
Il 23/07/2013 11:41, Jason Wang ha scritto:
> Switch to use hypervisor_cpuid_base() to detect Xen.
>
> Cc: Konrad Rzeszutek Wilk
> Cc: Jeremy Fitzhardinge
> Cc: Thomas Gleixner
> Cc: Ingo Molnar
> Cc: "H. Peter Anvin"
> Cc: x...@kernel.org
Il 23/07/2013 11:41, Jason Wang ha scritto:
> Switch to use hypervisor_cpuid_base() to detect KVM.
>
> Cc: Gleb Natapov
> Cc: Paolo Bonzini
> Cc: Thomas Gleixner
> Cc: Ingo Molnar
> Cc: "H. Peter Anvin"
> Cc: x...@kernel.org
> Cc: kvm@vger.k
ve
> this by simply checking kvm in detect_hypervisor() first.
>
> Cc: Thomas Gleixner
> Cc: Ingo Molnar
> Cc: "H. Peter Anvin"
> Cc: x...@kernel.org
> Cc: Gleb Natapov
> Cc: Paolo Bonzini
> Cc: K. Y. Srinivasan
> Signed-off-by: Jason Wang
> ---
&
Il 22/07/2013 22:57, Zlatko Calusic ha scritto:
> I'm getting a lot of these in kernel 3.11.0-rc1:
>
> Jul 19 19:53:06 ps kernel: kvm: zapping shadow pages for mmio generation
> wraparound
> Jul 19 22:37:47 ps kernel: kvm: zapping shadow pages for mmio generation
> wraparound
> Jul 20 00:07:24 ps
Il 24/07/2013 08:11, Arthur Chunqi Li ha scritto:
>
> static int vmx_run()
> {
> u32 eax;
> bool ret;
>
> vmcs_write(HOST_RSP, get_rsp());
> ret = vmlaunch();
The compiler can still change rsp between here...
> while (!ret) {
> asm volatile(
> "vmx_return
Il 24/07/2013 08:46, Arthur Chunqi Li ha scritto:
> On Wed, Jul 24, 2013 at 2:40 PM, Paolo Bonzini wrote:
>> Il 24/07/2013 08:11, Arthur Chunqi Li ha scritto:
>>>
>>> static int vmx_run()
>>> {
>>> u32 eax;
>>> bool ret;
>>>
Il 24/07/2013 08:54, Jason Wang ha scritto:
> On 07/24/2013 12:48 PM, H. Peter Anvin wrote:
>> On 07/23/2013 09:37 PM, Jason Wang wrote:
>>> On 07/23/2013 10:48 PM, H. Peter Anvin wrote:
On 07/23/2013 06:55 AM, KY Srinivasan wrote:
> This strategy of hypervisor detection based on some dete
; /* vmlaunch/vmresume failed, exit */
> "4:\n\t"
> "mov $1, %1\n\t"
> "5:\n\t"
> : "=r"(ret), "=r"(eax)
> : "i"(HOST_RSP), "i"(VMX_TEST_VMEXIT),
> "i"
Il 24/07/2013 23:37, H. Peter Anvin ha scritto:
> What I'm suggesting is exactly that except that the native hypervisor is
> later in CPUID space.
Me too actually.
I was just suggesting an implementation of the idea (that takes into
account hypervisors detected by other means than CPUID).
Paolo
Il 26/07/2013 15:03, Christian Borntraeger ha scritto:
> Gleb, Paolo,
>
> here are some fixes and cleanups for KVM/s390.
>
> The first two patches
> "KVM: s390: move kvm_guest_enter,exit closer to sie"
> and
> "KVM: s390: fix pfmf non-quiescing control handling"
>
> should go into 3.11. Everythi
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> + * we should use its exit controls. Note that IA32_MODE, LOAD_IA32_EFER
> + * bits are further modified by vmx_set_efer() below.
IA32E_MODE, but the last sentence is not relevant anyway for this
vmcs_write32; in fact, the next command basi
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 89b15df..56d0066 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -7596,8 +7596,7 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu,
> struct vmcs12 *vmcs12)
> kvm_
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> +#if PTTYPE == PTTYPE_EPT
> +#define CHECK_BAD_MT_XWR(G) mmu->bad_mt_xwr & (1ull << ((G) & 0x3f));
> +#else
> +#define CHECK_BAD_MT_XWR(G) 0;
> +#endif
> +
> static bool FNAME(is_rsvd_bits_set)(struct kvm_mmu *mmu, u64 gpte, int level)
> {
> i
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> From: Nadav Har'El
>
> This is the first patch in a series which adds nested EPT support to KVM's
> nested VMX. Nested EPT means emulating EPT for an L1 guest so that L1 can use
> EPT when running a nested guest L2. When L1 uses EPT, it allows the L
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> + if (enable_ept) {
> + /* nested EPT: emulate EPT also to L1 */
> + nested_vmx_secondary_ctls_high |= SECONDARY_EXEC_ENABLE_EPT;
> + nested_vmx_ept_caps = VMX_EPT_PAGE_WALK_4_BIT;
> + nested_vmx_ept
Il 29/07/2013 12:52, Gleb Natapov ha scritto:
> On Mon, Jul 29, 2013 at 10:59:31AM +0200, Paolo Bonzini wrote:
>> Il 25/07/2013 12:59, Gleb Natapov ha scritto:
>>> +#if PTTYPE == PTTYPE_EPT
>>> +#define CHECK_BAD_MT_XWR(G) mmu->bad_mt_xwr & (1ull <<
Il 29/07/2013 13:11, Gleb Natapov ha scritto:
> > > + nested_vmx_ept_caps &= vmx_capability.ept;
> >
> > This is always missing VMX_EPT_EXECUTE_ONLY_BIT, should it be added
> > before the "&=".
>
> I am not at all sure our current shadow implementation can support
> execute only pages. Be
Il 29/07/2013 13:33, Gleb Natapov ha scritto:
> On Mon, Jul 29, 2013 at 11:48:06AM +0200, Paolo Bonzini wrote:
>> Il 25/07/2013 12:59, Gleb Natapov ha scritto:
>>> From: Nadav Har'El
>>>
>>> This is the first patch in a series which adds nested EPT su
Il 29/07/2013 13:43, Gleb Natapov ha scritto:
> On Mon, Jul 29, 2013 at 12:59:54PM +0200, Paolo Bonzini wrote:
>> Il 29/07/2013 12:52, Gleb Natapov ha scritto:
>>> On Mon, Jul 29, 2013 at 10:59:31AM +0200, Paolo Bonzini wrote:
>>>> Il 25/07/2013 12:59, Gleb Natapov
Il 29/07/2013 14:34, Gleb Natapov ha scritto:
But I think what you _really_ want is not avoiding conditional branches.
>>> The idea is that it is hard for branch prediction to predict correct
>>> result when correct result depends on guest's page table that can
>>> contain anything, so in some
Il 29/07/2013 14:24, Gleb Natapov ha scritto:
>> My initial impression to this patch was "everything's ready after the
>> previous patch, you just have to set the mask to 0". Which is not quite
>> true. Maybe you need three patches instead of two.
>>
> Or change commit message for patch 5 to make
Il 29/07/2013 15:20, Gleb Natapov ha scritto:
>> 2) in cases like this you just do not use likely/unlikely; the branch
>> will be very unlikely in the beginning, and very likely once shadow
>> pages are filled or in the no-EPT case. Just let the branch predictor
>> adjust, it will probably do bett
Il 29/07/2013 15:12, Gleb Natapov ha scritto:
>> Il 25/07/2013 12:59, Gleb Natapov ha scritto:
>>> > > +* we should use its exit controls. Note that IA32_MODE,
>>> > > LOAD_IA32_EFER
>>> > > +* bits are further modified by vmx_set_efer() below.
>> >
>> > IA32E_MODE, but the last s
Il 29/07/2013 15:27, Gleb Natapov ha scritto:
doesn't look bad at all. With the old check on EPT it looked ugly, but
with the new check on PT_GUEST_DIRTY_MASK it is quite natural. Also
because you have anyway a reference to PT_GUEST_DIRTY_MASK in the "if".
If I see
Il 29/07/2013 18:14, Gleb Natapov ha scritto:
>> > accessed_dirty &=
>> > pte >> (PT_DIRTY_SHIFT - PT_ACCESSED_SHIFT);
>> >
>> > if (PT_GUEST_DIRTY_MASK != 0 &&
>> > unlikely(!accessed_dirty)) {
>> >
>>
Il 29/07/2013 18:24, Gleb Natapov ha scritto:
> On Mon, Jul 29, 2013 at 04:12:33PM +0200, Paolo Bonzini wrote:
>> Il 29/07/2013 15:20, Gleb Natapov ha scritto:
>>>> 2) in cases like this you just do not use likely/unlikely; the branch
>>>> will be very unlikely
Il 29/07/2013 18:43, Gleb Natapov ha scritto:
> On Mon, Jul 29, 2013 at 06:28:37PM +0200, Paolo Bonzini wrote:
>> Il 29/07/2013 18:14, Gleb Natapov ha scritto:
>>>>>>>>>>>>> accessed_dirty &=
>>>>>&g
Il 25/07/2013 12:59, Gleb Natapov ha scritto:
> From: Nadav Har'El
>
> This is the first patch in a series which adds nested EPT support to KVM's
> nested VMX. Nested EPT means emulating EPT for an L1 guest so that L1 can use
> EPT when running a nested guest L2. When L1 uses EPT, it allows the L
Il 30/07/2013 13:56, Gleb Natapov ha scritto:
>>> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
>>> index 4c4274d..b5273c3 100644
>>> --- a/arch/x86/kvm/mmu.c
>>> +++ b/arch/x86/kvm/mmu.c
>>> @@ -3494,6 +3494,11 @@ static inline bool is_last_gpte(struct kvm_mmu *mmu,
>>> unsigned level, uns
Il 30/07/2013 15:02, Xiao Guangrong ha scritto:
> Make sure we can see the writable spte before the dirt bitmap is visible
>
> We do this is for kvm_vm_ioctl_get_dirty_log() write-protects the spte based
> on the dirty bitmap, we should ensure the writable spte can be found in rmap
> before the di
Il 30/07/2013 15:02, Xiao Guangrong ha scritto:
> kvm_vm_ioctl_get_dirty_log() write-protects the spte based on the dirty
> bitmap, we should ensure the writable spte can be found in rmap before the
> dirty bitmap is visible. Otherwise, we cleared the dirty bitmap and failed
> to write-protect the
Il 30/07/2013 16:57, Arthur Chunqi Li ha scritto:
> On Tue, Jul 30, 2013 at 10:53 PM, Paolo Bonzini wrote:
>> Il 28/07/2013 16:00, Arthur Chunqi Li ha scritto:
>>> +
>>> + while (1) {
>>> + asm volatile (
>>>
Il 28/07/2013 16:00, Arthur Chunqi Li ha scritto:
> +
> + while (1) {
> + asm volatile (
> + "mov %%rsp, %%rsi\n\t"
> + "mov %2, %%rdi\n\t"
> + "vmwrite %%rsi, %%rdi\n\t"
> +
> + LOAD_GPR_C
> +
kvm_io_bus_sort_cmp is used also directly, not just as a callback for
sort and bsearch. In these cases, it is handy to have a type-safe
variant. This patch introduces such a variant, __kvm_io_bus_sort_cmp,
and uses it throughout kvm_main.c.
Signed-off-by: Paolo Bonzini
---
virt/kvm/kvm_main.c
modified.
Signed-off-by: Paolo Bonzini
---
arch/x86/kvm/x86.c | 39 ++-
1 file changed, 38 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1368cf5..9805cfd 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4971,6
This lets debugging work better during emulation of invalid
guest state.
The check is done before emulating the instruction, and (in the case
of guest debugging) reuses EMULATE_DO_MMIO to exit with KVM_EXIT_DEBUG.
Signed-off-by: Paolo Bonzini
---
arch/x86/kvm/x86.c | 66
-stepping. Software breakpoints and
hardware watchpoints are still ignored.
Paolo
v1->v2: rename EMULATE_DO_MMIO to EMULATE_USER_EXIT;
return EMULATE_* value via pointer-to-int argument.
Paolo Bonzini (3):
KVM: x86: rename EMULATE_DO_MMIO
KVM: x86: handle hardware breakpoints dur
The next patch will reuse it for other userspace exits than MMIO,
namely debug events.
Signed-off-by: Paolo Bonzini
---
arch/x86/include/asm/kvm_host.h | 4 ++--
arch/x86/kvm/mmu.c | 2 +-
arch/x86/kvm/vmx.c | 2 +-
arch/x86/kvm/x86.c | 4 ++--
4 files
- Gleb Natapov wrote:
> On Tue, Jul 30, 2013 at 05:11:36PM +0200, Paolo Bonzini wrote:
> > This lets debugging work better during emulation of invalid
> > guest state.
> >
> > This time the check is done after emulation, but before writeback
> > of the
- Gleb Natapov wrote:
> On Tue, Jul 30, 2013 at 05:05:37PM +0200, Paolo Bonzini wrote:
> > kvm_io_bus_sort_cmp is used also directly, not just as a callback for
> > sort and bsearch. In these cases, it is handy to have a type-safe
> > variant. This patch intr
> vscsi->num_queues counts the number of request virtqueue which does not
> include the control and event virtqueue. It is wrong to subtract
> VIRTIO_SCSI_VQ_BASE from vscsi->num_queues.
Reviewed-by: Paolo Bonzini
> This patch fixes the following panic.
>
> (qemu) de
On Aug 01 2013, Xiao Guangrong wrote:
> On 08/01/2013 03:42 PM, Gleb Natapov wrote:
> > On Thu, Aug 01, 2013 at 03:31:01PM +0800, Xiao Guangrong wrote:
> >> On 08/01/2013 03:18 PM, Xiao Guangrong wrote:
> >> +#endif
> >
> > Hmm, why not use shadow_x_mask, shadow_user_mask instead?
>
On Aug 01 2013, Gleb Natapov wrote:
> On Thu, Aug 01, 2013 at 04:31:31PM +0800, Xiao Guangrong wrote:
> > On 07/31/2013 10:48 PM, Gleb Natapov wrote:
> > > From: Yang Zhang
> > >
> > > Inject nEPT fault to L1 guest. This patch is original from Xinhao.
> > >
> > > Signed-off-by: Jun Nakajima
>
On Aug 01 2013, Gleb Natapov wrote:
> On Thu, Aug 01, 2013 at 01:19:11PM +0200, Paolo Bonzini wrote:
> > On Aug 01 2013, Gleb Natapov wrote:
> > > On Thu, Aug 01, 2013 at 04:31:31PM +0800, Xiao Guangrong wrote:
> > > > On 07/31/2013 10:48 PM, Gleb Natapov wro
> > > > > > Not sure this explicit "inline" is needed... Gcc always inlines the
> > > > > > small and
> > > > > > static functions.
> > > > >
> > > > > Paolo asked for it, but now I see that I did in in a wrong patch. I do
> > > > > not care much personally either way, I agree with you though, co
> > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > index e999dc7..27efa6a 100644
> > --- a/arch/x86/kvm/vmx.c
> > +++ b/arch/x86/kvm/vmx.c
> > @@ -2198,7 +2198,8 @@ static __init void nested_vmx_setup_ctls_msrs(void)
> > #else
> > nested_vmx_exit_ctls_high = 0;
> > #endif
> > -
- Original Message -
> From: "Arthur Chunqi Li"
> To: kvm@vger.kernel.org
> Cc: "jan kiszka" , g...@redhat.com, pbonz...@redhat.com,
> "Arthur Chunqi Li"
> Sent: Monday, August 5, 2013 1:18:13 PM
> Subject: [PATCH v2] KVM: nVMX: Advertise IA32_PAT in VM exit control
>
> Advertise VM_E
> > On Mon, Aug 05, 2013 at 11:46:03AM +0200, Ingo Molnar wrote:
> > > Acked-by: Ingo Molnar
> > >
> > > I guess you'd want to carry this in the KVM tree or so - maybe in a
> > > separate branch because it changes Xen as well?
> >
> > It changes KVM host and guest side, XEN and common x86 spinlo
> Only thing I am thinking is about KVM_FEATURE_PV_UNHALT, and
> KVM_HC_KICK_CPU definition in the below hunk, that is needed by guest
> as well. may be this header file change can be a separate patch so that
> duplicate can be handled easily during merge?
Sure, good idea.
Paolo
> I do testing o
On 08/06/2013 05:15 PM, Juan Quintela wrote:
* pvpanic
- was added by default in 1.5, this might have been too rash:
- might change guest behaviour if guest is set to reboot on panic
Interesting, but it looks like either a feature or a driver bug.
- might cause slightly annoyi
On 08/06/2013 12:12 AM, Andi Kleen wrote:
From: Andi Kleen
kvm_rebooting is referenced from assembler code, thus
needs to be visible.
Signed-off-by: Andi Kleen
---
virt/kvm/kvm_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_mai
On 08/07/2013 02:46 PM, Jan Kiszka wrote:
On 2013-08-07 14:39, Gleb Natapov wrote:
On Tue, Aug 06, 2013 at 05:57:02PM +0200, Jan Kiszka wrote:
On 2013-08-06 17:53, Gleb Natapov wrote:
On Tue, Aug 06, 2013 at 05:48:54PM +0200, Jan Kiszka wrote:
On 2013-08-06 17:04, Zhang, Yang Z wrote:
Gleb N
On 08/07/2013 03:38 PM, Gleb Natapov wrote:
On Wed, Aug 07, 2013 at 03:32:37PM +0200, Paolo Bonzini wrote:
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 44494ed..60a3644 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3375,8 +3375,10 @@ static void vmx_set_cr3(struct
On 08/06/2013 10:39 AM, Jan Kiszka wrote:
These patches apply on top of nEPT v7.
Changes in v2:
- rebased over v7
- added patch to fix VM_ENTRY_IA32E_MODE reporting
Jan Kiszka (8):
KVM: nEPT: Advertise WB type EPTP
KVM: nVMX: Fix up VM_ENTRY_IA32E_MODE control feature reporting
KVM
On 08/05/2013 06:59 AM, Xiao Guangrong wrote:
Current code always uses arch.mmu to check the reserved bits on guest gpte
which is valid only for L1 guest, we should use arch.nested_mmu instead when
we translate gva to gpa for the L2 guest
Fix it by using @mmu instead since it is adapted to the c
On 08/04/2013 02:08 PM, Gleb Natapov wrote:
After commit 21feb4eb64e21f8dc91136b91ee886b978ce6421 tr base is zeroed
during vmexit. Set it to L1's HOST_TR_BASE. This should fix
https://bugzilla.kernel.org/show_bug.cgi?id=60679
Signed-off-by: Gleb Natapov
diff --git a/arch/x86/kvm/vmx.c b/arch/x8
On 08/05/2013 10:07 AM, Gleb Natapov wrote:
Xiao comment about checking ept pointer before flushing individual ept context
is addressed here.
Gleb Natapov (3):
nEPT: make guest's A/D bits depends on guest's paging mode
nEPT: Support shadow paging for guest paging without A/D bits
nEPT:
On 08/05/2013 05:32 AM, Arthur Chunqi Li wrote:
Reconstruct VMX codes and put all VMX test suites in x86/vmx_tests.c.
Signed-off-by: Arthur Chunqi Li
---
ChangeLog to v2:
Remove some unused extern definitions in vmx.h.
config-x86-common.mak |2 +-
x86/vmx.c | 115 +
On 08/05/2013 02:43 PM, Arthur Chunqi Li wrote:
Separate host_rflags and guest_rflags (regs.rflags used for guest).
Fix bug of set/get guest rflags when vmenter/vmexit.
Signed-off-by: Arthur Chunqi Li
Applied, thanks.
Not putting it on the stack is fine, but please do a followup patch to
de
> > I can't trace the bug, either.
> >
> > kvm: branch next: bf640876e21fe603f7f52b0c27d66b7716da0384 (some
> > patches ahead of the bug report version)
> > qemu-kvm: branch uq/master:
> > 0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
> > guest: rhel 6.4, kernel 2.6.32-358.el6.x86_64
>
> I can still r
On 08/08/2013 01:31 PM, Zhanghaoyu (A) wrote:
> And, rebuild the kvm-kmod, then re-insmod kvm-intel.ko with ept=0,
I virsh-save the VM, and then virsh-restore the VM, the performance
degradation disappeared, and no GFN printed.
But, I also made a test on the first bad
commit(612819c3c6e67bac8
Il 06/08/2013 15:16, Xiao Guangrong ha scritto:
> Hi Gleb, Paolo, Marcelo, Takuya,
>
> Any comments or further comments? :)
It's not the easiest patch to review. I've looked at it (beyond the
small comments I have already posted), but it will take some time to
digest it...
By the way, both I an
---
> 1 file changed, 480 insertions(+), 485 deletions(-)
>
Acked-by: Paolo Bonzini
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Il 09/08/2013 12:20, Chijianchun ha scritto:
> Now in KVM, when RAM snapshot, vcpus needs stopped, it is Unfriendly
> restrictions to users.
>
> Are there plans to achieve ram live Snapshot feature?
>
> in my mind, Snapshots can not occupy additional too much memory, So when
> the memory needs
Hi all,
I'm seeing some breakage of shadow-on-shadow and shadow-on-EPT nested
VMX. Until I can track more precisely whether it is a regression, and
on which hosts I can reproduce it, I'm going to leave the patches out of
kvm/next.
The good news is that nested EPT works pretty well. :)
Paolo
--
The following changes since commit 90db76e829479ef2ba1fed8f2552846015469831:
Merge tag 'ext4_for_linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 (2013-07-20 20:11:42
-0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-li
Il 11/08/2013 09:10, Jan Kiszka ha scritto:
> From: Jan Kiszka
>
> Add decoding for INVEPT and reorder the list according to the reason
> numbers.
>
> Signed-off-by: Jan Kiszka
> ---
>
> Applies on top of queue.
>
> arch/x86/include/uapi/asm/vmx.h |5 +++--
> 1 files changed, 3 insertion
Il 13/08/2013 16:33, Florian Pester ha scritto:
> Hi,
>
> for a uni project I'm trying to write a userspace for KVM that can run
> ELF binaries without a full blown OS in the guest. The idea is to handle
> any syscalls made by the binary running inside the guest in the
> userspace of the host. In
Il 14/08/2013 20:44, Spensky, Chad - 0559 - MITLL ha scritto:
> Wolfgang,
>
> Thanks so much for the response. It turns out that wasn't handling the
> QEMUIOVector properly. When I first implemented it, I saw that the iovec
> was a pointer and assumed that there would only ever be one. Given
Il 15/08/2013 09:59, Arthur Chunqi Li ha scritto:
>> > volatile u32 stage? And we have barrier() to avoid reordering.
> Reordering here is not a big deal here, though it is actually needed
> here. I occurred the following problem:
>
> stage = 1;
> do something that causes vmexit;
> stage = 2;
>
>
Il 12/08/2013 21:56, Marcelo Tosatti ha scritto:
> Commit 8c3ba334f8588e1d5099f8602cf01897720e0eca, "KVM: x86: Raise the
> hard VCPU count limit", upstream introduced the notion of a recommended
> vcpu max limit.
>
> Switch the order so the recommended vcpu max limit is used instead of
> the actua
Il 18/08/2013 20:23, Liu, Jinsong ha scritto:
> From 1273f8b2e5464ec987facf9942fd3ccc0b69087e Mon Sep 17 00:00:00 2001
> From: Liu Jinsong
> Date: Mon, 19 Aug 2013 09:33:30 +0800
> Subject: [PATCH] qemu-kvm bugfix for IA32_FEATURE_CONTROL
>
> This patch is to fix the bug https://bugs.launchpad.ne
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