On Mon, Aug 05, 2013 at 12:59:19PM +0800, 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
-Original Message-
From: Gleb Natapov [mailto:g...@redhat.com]
Sent: Sunday, August 04, 2013 8:08 PM
To: kvm@vger.kernel.org
Cc: Ren, Yongjie; pbonz...@redhat.com; yzt...@gmail.com
Subject: [PATCH] KVM: nVMX: correctly set tr base on nested vmexit
emulation
After commit
On 2013-08-05 04:19, Arthur Chunqi Li wrote:
On Sun, Aug 4, 2013 at 11:17 PM, Jan Kiszka jan.kis...@web.de wrote:
From: Jan Kiszka jan.kis...@siemens.com
When asking vmx to load the PAT MSR for us while switching from L1 to L2
or vice versa, we have to update arch.pat as well as it may later
On Mon, Aug 5, 2013 at 1:49 AM, Jan Kiszka jan.kis...@web.de wrote:
From: Jan Kiszka jan.kis...@siemens.com
Implement and advertise VM_EXIT_SAVE_IA32_EFER. L0 traps EFER writes
unconditionally, so we always find the current L2 value in the
architectural state.
Signed-off-by: Jan Kiszka
On 2013-08-05 09:21, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 1:49 AM, Jan Kiszka jan.kis...@web.de wrote:
From: Jan Kiszka jan.kis...@siemens.com
Implement and advertise VM_EXIT_SAVE_IA32_EFER. L0 traps EFER writes
unconditionally, so we always find the current L2 value in the
From: Nadav Har'El n...@il.ibm.com
Recent KVM, since http://kerneltrap.org/mailarchive/linux-kvm/2010/5/2/6261577
switch the EFER MSR when EPT is used and the host and guest have different
NX bits. So if we add support for nested EPT (L1 guest using EPT to run L2)
and want to be able to run
From: Nadav Har'El n...@il.ibm.com
For preparation, we just move gpte_access(), prefetch_invalid_gpte(),
s_rsvd_bits_set(), protect_clean_gpte() and is_dirty_gpte() from mmu.c
to paging_tmpl.h.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Signed-off-by: Nadav Har'El
From: Nadav Har'El n...@il.ibm.com
If we let L1 use EPT, we should probably also support the INVEPT instruction.
In our current nested EPT implementation, when L1 changes its EPT table
for L2 (i.e., EPT12), L0 modifies the shadow EPT table (EPT02), and in
the course of this modification already
From: Nadav Har'El n...@il.ibm.com
kvm_set_cr3() attempts to check if the new cr3 is a valid guest physical
address. The problem is that with nested EPT, cr3 is an *L2* physical
address, not an L1 physical address as this test expects.
As the comment above this test explains, it isn't necessary,
need_remote_flush() assumes that shadow page is in PT64 format, but
with addition of nested EPT this is no longer always true. Fix it by
bits definitions that depend on host shadow page type.
Reported-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Reviewed-by: Xiao Guangrong
From: Nadav Har'El n...@il.ibm.com
KVM's existing shadow MMU code already supports nested TDP. To use it, we
need to set up a new MMU context for nested EPT, and create a few callbacks
for it (nested_ept_*()). This context should also use the EPT versions of
the page table access functions
From: Nadav Har'El n...@il.ibm.com
The existing code for handling cr3 and related VMCS fields during nested
exit and entry wasn't correct in all cases:
If L2 is allowed to control cr3 (and this is indeed the case in nested EPT),
during nested exit we must copy the modified cr3 from vmcs02 to
From: Yang Zhang yang.z.zh...@intel.com
Inject nEPT fault to L1 guest. This patch is original from Xinhao.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
Signed-off-by: Yang Zhang
From: Nadav Har'El n...@il.ibm.com
Some trivial code cleanups not really related to nested EPT.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
Some guest paging modes do not support A/D bits. Add support for such
modes in shadow page code. For such modes PT_GUEST_DIRTY_MASK,
PT_GUEST_ACCESSED_MASK, PT_GUEST_DIRTY_SHIFT and PT_GUEST_ACCESSED_SHIFT
should be set to zero.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
From: Nadav Har'El n...@il.ibm.com
Advertise the support of EPT to the L1 guest, through the appropriate MSR.
This is the last patch of the basic Nested EPT feature, so as to allow
bisection through this patch series: The guest will not see EPT support until
this last patch, and will not attempt
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: correctly check if remote tlb flush is needed
This patch makes guest A/D bits definition to be dependable on paging
mode, so when EPT support will be added it will be able to define them
differently.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86/kvm/paging_tmpl.h | 30
From: Yang Zhang yang.z.zh...@intel.com
Since nEPT doesn't support A/D bit, so we should not set those bit
when build shadow page table.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Signed-off-by: Yang Zhang yang.z.zh...@intel.com
Signed-off-by: Gleb Natapov g...@redhat.com
---
From: Nadav Har'El n...@il.ibm.com
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 L2 guest
to set its own cr3 and take its
From: Nadav Har'El n...@il.ibm.com
Some additional comments to preexisting code:
Explain who (L0 or L1) handles EPT violation and misconfiguration exits.
Don't mention shadow on either EPT or shadow as the only two options.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
On Tue, Jul 30, 2013 at 11:41:00PM +0800, Arthur Chunqi Li wrote:
Change rflags in struct regs to host_rflags. Remove settings
to GUEST_RFLAGS since GUEST_RFLAGS can be set by vmwrite. Treat
host_rflags as host rflags before and after vmenter.
I am not sure the change is for the better.
hi all,
I met similar problem to these, while performing live migration or
save-restore test on the kvm platform (qemu:1.4.0, host:suse11sp2,
guest:suse11sp2), running tele-communication software suite in
guest,
On Sun, Aug 04, 2013 at 05:17:27PM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis...@siemens.com
When asking vmx to load the PAT MSR for us while switching from L1 to L2
or vice versa, we have to update arch.pat as well as it may later be
used again to load or read out the MSR content.
On Mon, Aug 05, 2013 at 08:35:09AM +, Zhanghaoyu (A) wrote:
hi all,
I met similar problem to these, while performing live migration or
save-restore test on the kvm platform (qemu:1.4.0, host:suse11sp2,
guest:suse11sp2), running tele-communication software suite in
On Mon, Aug 5, 2013 at 4:29 PM, Gleb Natapov g...@redhat.com wrote:
On Tue, Jul 30, 2013 at 11:41:00PM +0800, Arthur Chunqi Li wrote:
Change rflags in struct regs to host_rflags. Remove settings
to GUEST_RFLAGS since GUEST_RFLAGS can be set by vmwrite. Treat
host_rflags as host rflags before
On 08/05/2013 04:07 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.com
If we let L1 use EPT, we should probably also support the INVEPT instruction.
In our current nested EPT implementation, when L1 changes its EPT table
for L2 (i.e., EPT12), L0 modifies the shadow EPT table
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
arch/x86/kvm/vmx.c |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 45fd70c..240f0db 100644
---
hi all,
I met similar problem to these, while performing live migration or
save-restore test on the kvm platform (qemu:1.4.0, host:suse11sp2,
guest:suse11sp2), running tele-communication software suite in
guest,
On Mon, Aug 05, 2013 at 04:48:47PM +0800, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 4:29 PM, Gleb Natapov g...@redhat.com wrote:
On Tue, Jul 30, 2013 at 11:41:00PM +0800, Arthur Chunqi Li wrote:
Change rflags in struct regs to host_rflags. Remove settings
to GUEST_RFLAGS since
Hi,
Am 05.08.2013 11:09, schrieb Zhanghaoyu (A):
When I build the upstream, encounter a problem that I compile and install the
upstream(commit: e769ece3b129698d2b09811a6f6d304e4eaa8c29) on sles11sp2
environment via below command
cp /boot/config-3.0.13-0.27-default ./.config
yes | make
Hi,
Am 05.08.2013 11:09, schrieb Zhanghaoyu (A):
When I build the upstream, encounter a problem that I compile and
install the upstream(commit: e769ece3b129698d2b09811a6f6d304e4eaa8c29)
on sles11sp2 environment via below command cp
/boot/config-3.0.13-0.27-default ./.config yes | make
在 2013-8-5，17:10，Gleb Natapov g...@redhat.com 写道：
On Mon, Aug 05, 2013 at 04:48:47PM +0800, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 4:29 PM, Gleb Natapov g...@redhat.com wrote:
On Tue, Jul 30, 2013 at 11:41:00PM +0800, Arthur Chunqi Li wrote:
Change rflags in struct regs to
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
arch/x86/kvm/vmx.c |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
arch/x86/kvm/vmx.c |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git
On Mon, Aug 05, 2013 at 09:09:56AM +, Zhanghaoyu (A) wrote:
The QEMU command line (/var/log/libvirt/qemu/[domain name].log),
LC_ALL=C PATH=/bin:/sbin:/usr/bin:/usr/sbin HOME=/ QEMU_AUDIO_DRV=none
/usr/local/bin/qemu-system-x86_64 -name ATS1 -S -M pc-0.12 -cpu qemu32
-enable-kvm -m 12288
* Gleb Natapov g...@redhat.com wrote:
On Fri, Aug 02, 2013 at 11:25:39AM +0200, Ingo Molnar wrote:
Ingo,
Do you have any concerns reg this series? please let me know if this
looks good now to you.
I'm inclined to NAK it for excessive quotation - who knows how many
people
That result was only for patch 18 of the series, not pvspinlock in
general.
Okay - I've re-read the performance numbers and they are impressive, so no
objections from me.
The x86 impact seems to be a straightforward API change, with most of the
changes on the virtualization side. So:
On 2013-08-05 11:36, Gmail wrote:
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
arch/x86/kvm/vmx.c |3 ++-
1 file changed, 2 insertions(+), 1
On Mon, Aug 05, 2013 at 12:38:32PM +0200, Jan Kiszka wrote:
On 2013-08-05 11:36, Gmail wrote:
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
On Mon, Aug 5, 2013 at 6:55 PM, Gleb Natapov g...@redhat.com wrote:
On Mon, Aug 05, 2013 at 12:38:32PM +0200, Jan Kiszka wrote:
On 2013-08-05 11:36, Gmail wrote:
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
On 2013-08-05 13:00, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 6:55 PM, Gleb Natapov g...@redhat.com wrote:
On Mon, Aug 05, 2013 at 12:38:32PM +0200, Jan Kiszka wrote:
On 2013-08-05 11:36, Gmail wrote:
On Mon, Aug 05, 2013 at 05:10:35PM +0800, Arthur Chunqi Li wrote:
Advertise
On Mon, Aug 05, 2013 at 01:04:25PM +0200, Jan Kiszka wrote:
On 2013-08-05 13:00, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 6:55 PM, Gleb Natapov g...@redhat.com wrote:
On Mon, Aug 05, 2013 at 12:38:32PM +0200, Jan Kiszka wrote:
On 2013-08-05 11:36, Gmail wrote:
On Mon, Aug 05,
Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.
Signed-off-by: Arthur Chunqi Li yzt...@gmail.com
---
ChangeLog to v1:
Add host features check. Format is the same as entry controls.
arch/x86/kvm/vmx.c | 10 ++
1 file changed, 6 insertions(+), 4 deletions(-)
diff
On Mon, Aug 5, 2013 at 4:07 PM, Gleb Natapov g...@redhat.com wrote:
From: Nadav Har'El n...@il.ibm.com
Recent KVM, since http://kerneltrap.org/mailarchive/linux-kvm/2010/5/2/6261577
switch the EFER MSR when EPT is used and the host and guest have different
NX bits. So if we add support for
On Fri, Aug 02, 2013 at 08:06:58PM +0200, folkert wrote:
A couple of questions:
Please post the QEMU command-line from the host (ps aux | grep qemu).
I'll post them all:
- UMTS-clone: this one works fine since it was created a weak ago
- belle: this one was fine but suddenly also showed
On Mon, Aug 05, 2013 at 07:27:33PM +0800, Arthur Chunqi Li wrote:
On Mon, Aug 5, 2013 at 4:07 PM, Gleb Natapov g...@redhat.com wrote:
From: Nadav Har'El n...@il.ibm.com
Recent KVM, since
http://kerneltrap.org/mailarchive/linux-kvm/2010/5/2/6261577
switch the EFER MSR when EPT is used
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 yzt...@gmail.com
To: kvm@vger.kernel.org
Cc: jan kiszka jan.kis...@web.de, g...@redhat.com, pbonz...@redhat.com,
Arthur Chunqi Li yzt...@gmail.com
Sent: Monday, August 5, 2013 1:18:13 PM
Subject: [PATCH v2] KVM: nVMX: Advertise IA32_PAT
On Mon, Aug 05, 2013 at 07:48:54AM -0400, Paolo Bonzini wrote:
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
On Mon, Aug 05, 2013 at 08:03:31AM -0400, Paolo Bonzini wrote:
- Original Message -
From: Arthur Chunqi Li yzt...@gmail.com
To: kvm@vger.kernel.org
Cc: jan kiszka jan.kis...@web.de, g...@redhat.com, pbonz...@redhat.com,
Arthur Chunqi Li yzt...@gmail.com
Sent: Monday, August
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 yzt...@gmail.com
---
x86/vmx.c | 11 +++
x86/vmx.h |4 ++--
2 files changed, 9 insertions(+), 6 deletions(-)
diff --git
On Sun, Aug 04, 2013 at 07:49:00PM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis...@siemens.com
At least WB must be possible.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Reviewed-by: Gleb Natapov g...@redhat.com
---
arch/x86/kvm/vmx.c |4 ++--
1 files changed, 2
Platform devices in the Linux kernel are usually managed by the DT
interface. This patch forms the base to support these kind of devices
with VFIO.
Signed-off-by: Antonios Motakis a.mota...@virtualopensystems.com
---
drivers/vfio/Kconfig | 10 +++
drivers/vfio/Makefile | 1 +
A VFIO userspace driver will start by opening the VFIO device
that corresponds to an IOMMU group, and will use the ioctl interface
to get the basic device info, such as number of memory regions and
interrupts, and their properties.
This patch implements the IOCTLs:
- VFIO_DEVICE_GET_INFO
-
This is a very early base work, towards VFIO support on ARM platforms
with an IOMMU. It forms a base on to which to implement the functionality
necessary to enable using device tree devices on ARM (and other platforms
based on device trees) with VFIO.
This very early work of progress is only
This is a workaround to make the VFIO_IOMMU_TYPE1 driver usable with
platform devices instead of PCI. A future permanent fix should support
both. This is required in order to use the Exynos SMMU, or the ARM SMMU
driver with VFIO.
Signed-off-by: Antonios Motakis a.mota...@virtualopensystems.com
Hi David,
On 01/08/13 21:22, David Daney wrote:
From: David Daney david.da...@cavium.com
No code changes, just reflowing some comments and consistently using
tabs and spaces. Object code is verified to be unchanged.
Signed-off-by: David Daney david.da...@cavium.com
Acked-by: Ralf
On Mon, Aug 05, 2013 at 08:43:25PM +0800, 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 yzt...@gmail.com
---
x86/vmx.c | 11 +++
x86/vmx.h |4
On Mon, Aug 05, 2013 at 02:17:01PM +0100, James Hogan wrote:
On 01/08/13 21:22, David Daney wrote:
From: David Daney david.da...@cavium.com
No code changes, just reflowing some comments and consistently using
tabs and spaces. Object code is verified to be unchanged.
[adding DT maintainers to Cc]
On Mon, Aug 05, 2013 at 02:17:11PM +0100, Antonios Motakis wrote:
Platform devices in the Linux kernel are usually managed by the DT
interface. This patch forms the base to support these kind of devices
with VFIO.
Signed-off-by: Antonios Motakis
On Mon, Aug 05, 2013 at 03:21:57PM +0200, Ralf Baechle wrote:
On Mon, Aug 05, 2013 at 02:17:01PM +0100, James Hogan wrote:
On 01/08/13 21:22, David Daney wrote:
From: David Daney david.da...@cavium.com
No code changes, just reflowing some comments and consistently using
tabs
On Mon, Aug 5, 2013 at 9:18 PM, Gleb Natapov g...@redhat.com wrote:
On Mon, Aug 05, 2013 at 08:43:25PM +0800, 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
+static const struct of_device_id vfio_dt_match[] = {
+ � � /* In the future, we can implement a better mechanism to bind
the
+ � � �* module to any device. For now add the compatible property to
the
+ � � �* dtb of the devices we want to use. � */
+
* Gleb Natapov g...@redhat.com wrote:
On Mon, Aug 05, 2013 at 11:46:03AM +0200, Ingo Molnar wrote:
Acked-by: Ingo Molnar mi...@kernel.org
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
On Mon, Aug 05, 2013 at 11:46:03AM +0200, Ingo Molnar wrote:
Acked-by: Ingo Molnar mi...@kernel.org
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
-Original Message-
From: Benjamin Herrenschmidt [mailto:b...@kernel.crashing.org]
Sent: Saturday, August 03, 2013 9:54 AM
To: Bhushan Bharat-R65777
Cc: Wood Scott-B07421; ag...@suse.de; kvm-...@vger.kernel.org;
kvm@vger.kernel.org; linuxppc-...@lists.ozlabs.org
Subject: Re: [PATCH
On 08/05/2013 07:35 PM, Paolo Bonzini wrote:
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 spinlock code. I
think it would be best to merge common x86 spinlock bits and
On Mon, Aug 05, 2013 at 11:38:14AM +0800, Jason Wang wrote:
On 07/25/2013 04:54 PM, Jason Wang wrote:
We try to handle the hypervisor compatibility mode by detecting hypervisor
through a specific order. This is not robust, since hypervisors may
implement
each others features.
This
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 of
Thanks for starting work on this.
-Original Message-
From: Antonios Motakis [mailto:a.mota...@virtualopensystems.com]
Sent: Monday, August 05, 2013 8:17 AM
To: linux-arm-ker...@lists.infradead.org; alex.william...@redhat.com
Cc: kvm...@lists.cs.columbia.edu;
On Mon, 2013-08-05 at 15:17 +0200, Antonios Motakis wrote:
Platform devices in the Linux kernel are usually managed by the DT
interface. This patch forms the base to support these kind of devices
with VFIO.
Signed-off-by: Antonios Motakis a.mota...@virtualopensystems.com
---
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE(GPL v2);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 284ff24..1e4bef2 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@
On 08/05/2013 07:34 AM, Konrad Rzeszutek Wilk wrote:
Could you provide me with a git branch so I can test it overnight please?
Pull tip:x86/paravirt.
-hpa
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More
On Mon, Aug 05, 2013 at 11:46:03AM +0200, Ingo Molnar wrote:
* Gleb Natapov g...@redhat.com wrote:
On Fri, Aug 02, 2013 at 11:25:39AM +0200, Ingo Molnar wrote:
Ingo,
Do you have any concerns reg this series? please let me know if this
looks good now to you.
I'm
On Sat, 2013-08-03 at 14:25 +1000, Benjamin Herrenschmidt wrote:
On Sat, 2013-08-03 at 03:11 +, Bhushan Bharat-R65777 wrote:
Could you explain why we need to set dirty/referenced on the PTE, when we
didn't
need to do that before? All we're getting from the PTE is wimg.
We
On Fri, 2013-08-02 at 22:11 -0500, Bhushan Bharat-R65777 wrote:
How does wimg get set in the pfnmap case?
Pfnmap is not kernel managed pages, right? So should we set I+G there ?
It could depend on ppc_md.phys_mem_access_prot(). Can't you pull it
from the PTE regardless of pfnmap?
-Scott
On Mon, Aug 05, 2013 at 08:20:53AM -0700, H. Peter Anvin wrote:
On 08/05/2013 07:34 AM, Konrad Rzeszutek Wilk wrote:
Could you provide me with a git branch so I can test it overnight please?
Pull tip:x86/paravirt.
It works for me. Thanks.
-hpa
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On Mon, Aug 05, 2013 at 04:43:27PM +0300, Gleb Natapov wrote:
Date: Mon, 5 Aug 2013 16:43:27 +0300
From: Gleb Natapov g...@redhat.com
To: Ralf Baechle r...@linux-mips.org
Cc: James Hogan james.ho...@imgtec.com, David Daney
ddaney.c...@gmail.com, linux-m...@linux-mips.org,
On 08/05/2013 06:43 AM, Gleb Natapov wrote:
On Mon, Aug 05, 2013 at 03:21:57PM +0200, Ralf Baechle wrote:
On Mon, Aug 05, 2013 at 02:17:01PM +0100, James Hogan wrote:
On 01/08/13 21:22, David Daney wrote:
From: David Daney david.da...@cavium.com
No code changes, just reflowing some
On Tue, 2013-07-23 at 19:07 +1000, Alexey Kardashevskiy wrote:
On 07/23/2013 12:23 PM, Alex Williamson wrote:
On Tue, 2013-07-16 at 10:53 +1000, Alexey Kardashevskiy wrote:
VFIO is designed to be used via ioctls on file descriptors
returned by VFIO.
However in some situations support
On Mon, Aug 05, 2013 at 07:06:10PM +0200, Ralf Baechle wrote:
On Mon, Aug 05, 2013 at 04:43:27PM +0300, Gleb Natapov wrote:
Date: Mon, 5 Aug 2013 16:43:27 +0300
From: Gleb Natapov g...@redhat.com
To: Ralf Baechle r...@linux-mips.org
Cc: James Hogan james.ho...@imgtec.com, David Daney
On Mon, 2013-08-05 at 09:27 -0500, Bhushan Bharat-R65777 wrote:
-Original Message-
From: Benjamin Herrenschmidt [mailto:b...@kernel.crashing.org]
Sent: Saturday, August 03, 2013 9:54 AM
To: Bhushan Bharat-R65777
Cc: Wood Scott-B07421; ag...@suse.de; kvm-...@vger.kernel.org;
If you do find something in dmesg that could be very helpful.
Ok it is down again: nothing in dmesg, neither on the guest or in the
host.
Based on this information it seems like a bug in the virtio_net guest
driver or vhost_net on the host. Actually there is one contradictory
piece of
From: Andi Kleen a...@linux.intel.com
kvm_rebooting is referenced from assembler code, thus
needs to be visible.
Signed-off-by: Andi Kleen a...@linux.intel.com
---
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_main.c
On 08/05/2013 03:12 PM, Andi Kleen wrote:
From: Andi Kleen a...@linux.intel.com
kvm_rebooting is referenced from assembler code, thus
needs to be visible.
Signed-off-by: Andi Kleen a...@linux.intel.com
---
virt/kvm/kvm_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
So, having read through the entire thread I *think* this is what the
status of this patchset is:
1. Patches 1-17 are noncontroversial, Raghavendra is going to send an
update split into two patchsets;
2. There are at least two versions of patch 15; I think the PATCH
RESEND RFC is the right
static void kvm_io_bus_destroy(struct kvm_io_bus *bus);
-bool kvm_rebooting;
+__visible bool kvm_rebooting;
EXPORT_SYMBOL_GPL(kvm_rebooting);
How many of these are there kernel wide?
Not very many (at least on x86 allyes) ~10.
Also most users are not exported.
Probably not worth an
-Original Message-
From: Wood Scott-B07421
Sent: Tuesday, August 06, 2013 12:49 AM
To: Bhushan Bharat-R65777
Cc: Benjamin Herrenschmidt; Wood Scott-B07421; ag...@suse.de; kvm-
p...@vger.kernel.org; kvm@vger.kernel.org; linuxppc-...@lists.ozlabs.org
Subject: Re: [PATCH 5/6 v2] kvm:
On 08/06/2013 04:20 AM, H. Peter Anvin wrote:
So, having read through the entire thread I *think* this is what the
status of this patchset is:
1. Patches 1-17 are noncontroversial, Raghavendra is going to send an
update split into two patchsets;
Yes. Only one patch would be common to
Currently we request write access to all pages that get mapped into the
guest, even if the guest is only loading from the page. This reduces
the effectiveness of KSM because it means that we unshare every page we
access. Also, we always set the changed (C) bit in the guest HPTE if
it allows
The implementation of H_ENTER in PR KVM has some errors:
* With H_EXACT not set, if the HPTEG is full, we return H_PTEG_FULL
as the return value of kvmppc_h_pr_enter, but the caller is expecting
one of the EMULATE_* values. The H_PTEG_FULL needs to go in the
guest's R3 instead.
* With
64-bit POWER processors have a three-bit field for page protection in
the hashed page table entry (HPTE). Currently we only interpret the two
bits that were present in older versions of the architecture. The only
defined combination that has the new bit set is 110, meaning read-only
for
This merges the PR and HV implementations of kvm_vm_ioctl_get_smmu_info()
into a single implementation in book3s.c. Since userspace tends to
call this ioctl very early in the life of a VM, before (for instance)
enabling PAPR mode, we will need this to return results that are
compatible with both
The mark_page_dirty() function, despite what its name might suggest,
doesn't actually mark the page as dirty as far as the MM subsystem is
concerned. It merely sets a bit in KVM's map of dirty pages, if
userspace has requested dirty tracking for the relevant memslot.
To tell the MM subsystem that
Currently the code assumes that once we load up guest FP/VSX or VMX
state into the CPU, it stays valid in the CPU registers until we
explicitly flush it to the thread_struct. However, on POWER7,
copy_page() and memcpy() can use VMX. These functions do flush the
VMX state to the thread_struct
It turns out that if we exit the guest due to a hcall instruction (sc 1),
and the loading of the instruction in the guest exit path fails for any
reason, the call to kvmppc_ld() in kvmppc_get_last_inst() fetches the
instruction after the hcall instruction rather than the hcall itself.
This in turn
This adds a per-VM mutex to provide mutual exclusion between vcpus
for accesses to and updates of the guest hashed page table (HPT).
This also makes the code use single-byte writes to the HPT entry
when updating of the reference (R) and change (C) bits. The reason
for doing this, rather than
This splits kvmppc_core_vcpu_create_hv() into three functions and
adds a new kvmppc_free_vcores() to free the kvmppc_vcore structures
that we allocate for a guest, which are currently being leaked.
The reason for the split is to make the split-out code available
for later use in converting PR
When we are running a PR KVM guest on POWER8, we have to disable the
new POWER8 feature of taking interrupts with relocation on, that is,
of taking interrupts without disabling the MMU, because the SLB does
not contain the normal kernel SLB entries while in the guest.
Currently we disable
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