Robert Wimmer r.wimmer at tomorrow-focus.de writes:
Hi,
does anyone know how to solve the problem
with BUG: soft lockup - CPU#0 stuck for ...?
Today I got the messages below during compilation
of the kernel modules in a guest. Using kvm84 and Kernel 2.6.29
as host kernel and 2.6.28 as
Dong, Eddie wrote:
+static bool is_rsvd_bits_set(struct kvm_vcpu *vcpu, u64 gpte, int level)
+{
+ int ps = 0;
+
+ if (level == PT_DIRECTORY_LEVEL)
+ ps = !!(gpte PT_PAGE_SIZE_MASK);
No need for this. If you set rsvd_bits_mask[1][0] ==
rsvd_bits_mask[0][0],
Marcelo, Andrea?
Avi Kivity wrote:
KVM currently flushes the tlbs on all cpus when emulating invlpg. This
is because at the time of invlpg we lose track of the page, and leaving
stale tlb entries could cause the guest to access the page when it is
later freed (say after being swapped out).
Joerg Roedel wrote:
This patch includes most of the necessary changes to the KVM SoftMMU for
supporting more than one huge page size. The changes in this patch
include:
* introduce 'enum kvm_page_size' which is used to represent the page
size used
How about the concept of page_level
Joerg Roedel wrote:
This patch adds the necessary data structures to take care of write
protections in place within a second huge page sized page.
struct kvm_vcpu_arch {
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 9936b45..7d4162d 100644
--- a/arch/x86/kvm/mmu.c
+++
Joerg Roedel wrote:
This patch makes the MMU path for TDP aware of 1GB pages.
+#define PT64_MID_BASE_ADDR_MASK (PT64_BASE_ADDR_MASK \
+ ~((1ULL (PAGE_SHIFT + (2 * PT64_LEVEL_BITS))) - 1))
+#define PT64_MID_GFN_DELTA_MASK (PT64_BASE_ADDR_MASK (((1ULL \
+
Joerg Roedel wrote:
This patch enables support for 1GB pages in KVM by implementing
the support in backing_size().
@@ -490,18 +492,30 @@ static enum kvm_page_size host_page_size(struct kvm *kvm,
gfn_t gfn)
static enum kvm_page_size backing_size(struct kvm_vcpu *vcpu, gfn_t gfn)
{
Joerg Roedel wrote:
If userspace knows that the kernel part supports 1GB pages it can enable
the corresponding cpuid bit so that guests actually use GB pages.
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index a1df2a3..6593198 100644
---
Joerg Roedel wrote:
This patch adds support for 1GB pages in the shadow paging code. The
guest can map 1GB pages in his page tables and KVM will map the page
frame with a 1GB, a 2MB or even a 4kb page size, according to backing
host page size and the write protections in place.
This is the
Marcelo Tosatti wrote:
On Fri, Mar 27, 2009 at 03:31:52PM +0100, Joerg Roedel wrote:
Hi,
this patchset extends the KVM MMU implementation to support 1GB pages as
supported by AMD family 16 processors. These patches enable support for
1 GB pages with Nested Paging. Support for these pages in
Joerg Roedel wrote:
On Sat, Mar 28, 2009 at 06:40:08PM -0300, Marcelo Tosatti wrote:
On Fri, Mar 27, 2009 at 03:31:52PM +0100, Joerg Roedel wrote:
Hi,
this patchset extends the KVM MMU implementation to support 1GB pages as
supported by AMD family 16 processors. These patches enable
static int mmu_pages_next(struct kvm_mmu_pages *pvec,
struct mmu_page_path *parents,
int i)
{
int n;
for (n = i+1; n pvec-nr; n++) {
struct kvm_mmu_page *sp = pvec-page[n].sp;
if (sp-role.level
Nolan wrote:
Windows does zero all memory at boot, and also runs a idle-priority thread in
the background to zero memory as it is freed. This way it is far less likely to
need to zero a page to satisfy a memory allocation request. Whether or not this
is still a win now that people care about
On Sun, Mar 29, 2009 at 02:54:31PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
If userspace knows that the kernel part supports 1GB pages it can enable
the corresponding cpuid bit so that guests actually use GB pages.
diff --git a/arch/x86/include/asm/kvm_host.h
On Sun, Mar 29, 2009 at 03:03:28PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
On Sat, Mar 28, 2009 at 06:40:08PM -0300, Marcelo Tosatti wrote:
On Fri, Mar 27, 2009 at 03:31:52PM +0100, Joerg Roedel wrote:
Hi,
this patchset extends the KVM MMU implementation to support 1GB pages
Joerg Roedel wrote:
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
int (*get_mt_mask_shift)(void);
+
+ bool (*gb_page_enable)(void);
};
Should enable unconditionally. Of course we need to find the shadow bug
first,
On Sun, Mar 29, 2009 at 02:59:26PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
return write_protected;
}
@@ -789,11 +797,14 @@ static int kvm_handle_hva(struct kvm *kvm,
unsigned long hva,
if (hva = start hva end) {
gfn_t gfn_offset = (hva -
On Sun, Mar 29, 2009 at 03:49:11PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
int (*get_mt_mask_shift)(void);
+
+ bool (*gb_page_enable)(void);
};
Should enable unconditionally. Of
Joerg Roedel wrote:
Ok I will change that together with the page_size - page_level
chhanges. But I doubt that there will ever be 0.5T pages ;)
We're bloating at a rate of 1 bit per 1-2 years, so we have 8-16 years
to prepare.
--
error compiling committee.c: too many arguments to function
On Sun, Mar 29, 2009 at 02:45:44PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
This patch adds the necessary data structures to take care of write
protections in place within a second huge page sized page.
struct kvm_vcpu_arch {
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index
On Sun, Mar 29, 2009 at 04:15:07PM +0300, Avi Kivity wrote:
Joerg Roedel wrote:
+static int has_wrprotected_largepage(struct kvm *kvm, gfn_t gfn)
+{
+ struct kvm_memory_slot *slot;
+ int *hugepage_idx;
+
+ gfn = unalias_gfn(kvm, gfn);
+ slot = gfn_to_memslot_unaliased(kvm, gfn);
Avi Kivity wrote:
Joerg Roedel wrote:
This patch adds the necessary data structures to take care of write
protections in place within a second huge page sized page.
+#ifdef KVM_PAGES_PER_LHPAGE
+if (npages !new.hpage_info) {
+int hugepages = npages / KVM_PAGES_PER_LHPAGE;
+
Joerg Roedel wrote:
This patch adds the necessary data structures to take care of write
protections in place within a second huge page sized page.
+#ifdef KVM_PAGES_PER_LHPAGE
+ if (npages !new.hpage_info) {
+ int hugepages = npages / KVM_PAGES_PER_LHPAGE;
+
On Thu, Mar 26, 2009 at 04:15:56PM -0700, Jesse Barnes wrote:
2, avoid using pci_find_ext_capability every time when reading ATS
Invalidate Queue Depth (Matthew Wilcox)
I asked a question about how that was used, and got back a version which
changed how it was done. I still don't have
Bit 12 is undefined in any of the following cases:
If the VM exit sets the valid bit in the IDT-vectoring information field.
If the VM exit is due to a double fault.
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86/kvm/vmx.c | 17 +++--
1 files changed, 11 insertions(+),
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86/kvm/vmx.c | 43 +--
1 files changed, 25 insertions(+), 18 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 14e3f48..1017544 100644
--- a/arch/x86/kvm/vmx.c
+++
Kurt Yoder wrote:
slow host cpu information, core 1 of 16:
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 4
model name : Quad-Core AMD Opteron(tm) Processor 8382
stepping: 2
cpu MHz : 2611.998
cache size : 512 KB
physical id
Han, Weidong wrote:
I suggest replacing the parsing code with pci_parse_devaddr() (needs
to be extended to support functions) so that all the checking and
parsing is done in one place.
If use pci_parse_devaddr(), it needs to add domain section to assigning
command, and add function
Jes Sorensen wrote:
Hi,
A minor cosmetic fix to tell the compiler to shut up by including the
header providing the prototype for dma_helper_init().
I already got this via qemu-svn.
--
error compiling committee.c: too many arguments to function
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Hi,
We had setup a number of VM's using KVM-65 running on F7 some time
ago. We just ocmpleted upgrading a number of hosts to F10 and with that
came KVM-74-10. We had some problems after that upgrade. First, none
of the VM's would start. After digging around awhile we finally figured
out
Ryan Harper wrote:
When generating an html report from make_html_report.py, one needs to
supply the full path to the results directory. This value ends up being
embedded in the output which breaks relocating the results dir to a
different path. This patch adds a new flag that supresses the
Hi,
I was also experiencing this problem a lot for quite a long time (and for
wide range of KVM versions..)
I might be completely wrong as I'm not sure if it was really the reason,
but i THINK it disappeared when I started to use fully preemptible kernel on
host..
You might want to try it...
BR
Avi Kivity wrote:
Kurt Yoder wrote:
slow host cpu information, core 1 of 16:
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 4
model name : Quad-Core AMD Opteron(tm) Processor 8382
stepping: 2
cpu MHz : 2611.998
cache size :
Gerry Reno wrote:
Hi,
We had setup a number of VM's using KVM-65 running on F7 some time
ago. We just ocmpleted upgrading a number of hosts to F10 and with
that came KVM-74-10. We had some problems after that upgrade. First,
none of the VM's would start. After digging around awhile we
Gerry Reno wrote:
[...] After digging around awhile we finally figured
out that we had to once again 'chcon -t virt_image_t path_to_image' as
we had done back when we first setup the VM's. But what is the proper
procedure so that we don't lose the selinux attributes on these image
files?
Ross McKay wrote:
Gerry Reno wrote:
[...] After digging around awhile we finally figured
out that we had to once again 'chcon -t virt_image_t path_to_image' as
we had done back when we first setup the VM's. But what is the proper
procedure so that we don't lose the selinux attributes
Gerry Reno wrote:
Gerry Reno wrote:
Hi,
We had setup a number of VM's using KVM-65 running on F7 some time
ago. We just ocmpleted upgrading a number of hosts to F10 and with
that came KVM-74-10. We had some problems after that upgrade.
we are having a lot of problems with the dreaded
+static bool is_rsvd_bits_set(struct kvm_vcpu *vcpu, u64 gpte, int
level) +{ + int ps = 0;
+
+if (level == PT_DIRECTORY_LEVEL)
+ps = !!(gpte PT_PAGE_SIZE_MASK);
No need for this. If you set rsvd_bits_mask[1][0] ==
rsvd_bits_mask[0][0], then you get the same behaviour.
On Sun, Mar 29, 2009 at 09:51:31PM +0800, Matthew Wilcox wrote:
On Thu, Mar 26, 2009 at 04:15:56PM -0700, Jesse Barnes wrote:
2, avoid using pci_find_ext_capability every time when reading ATS
Invalidate Queue Depth (Matthew Wilcox)
I asked a question about how that was used, and
Bugs item #2721640, was opened at 2009-03-29 19:04
Message generated for change (Tracker Item Submitted) made by jiajun
You can respond by visiting:
https://sourceforge.net/tracker/?func=detailatid=893831aid=2721640group_id=180599
Please note that this message will contain a full copy of the
Hi All,
This is our Weekly KVM Testing Report against lastest kvm.git
0c77713470debc666a07dc40080d728272bb58b9 and kvm-userspace.git
1223a029b36b0d9e73af76bcc274bb770f814886.
One New Issue:
1. perfctr wrmsr warning when booting 64bit RHEl5.3
Thanks, Eddie
commit 6688a1fbc37330f2c4e16d1a78050b64e1ce5dcc
Author: root r...@eddie-wb.localdomain
Date: Mon Mar 30 11:31:10 2009 +0800
cleanup to reuse is_long_mode(vcpu)
Signed-off-by: Eddie Dong eddie.d...@intel.com
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
This is followup of rsvd_bits emulation.
thx, eddie
commit 171eb2b2d8282dd913a5d5c6c695fd64e1ddcf4c
Author: root r...@eddie-wb.localdomain
Date: Mon Mar 30 11:39:50 2009 +0800
Use rsvd_bits_mask in load_pdptrs for cleanup and considing EXB bit.
Signed-off-by: Eddie Dong
Gerry Reno wrote:
So the only problem I'm very concerned about at the moment is the VM
that was at the point of first reboot after the successful completion
of an F9 install. Any suggestions as to how to get that VM running?
In the virtmanager log we see this when we try to start this
Dong, Eddie wrote:
@@ -2183,6 +2197,25 @@ static int paging64_init_context_common(struct kvm_vcpu
*vcpu, int level)
static int paging64_init_context(struct kvm_vcpu *vcpu)
{
+ struct kvm_mmu *context = vcpu-arch.mmu;
+ int maxphyaddr = cpuid_maxphyaddr(vcpu);
+ u64
Hello,
I had similar problem regarding block I/O and migration.
And it is worked around by qemu stop command and waiting 1 second
before starting migration (and cont after migration).
See the Ubuntu bug report I posted.
https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/341682
I think Nolan
From: Avi Kivity a...@redhat.com
* commit 'qemu-svn/trunk': (27 commits)
gdbstub: Allow re-instantiation (Jan Kiszka)
char: Fix closing of various char devices (Jan Kiszka)
qemu-img: adding a -F base_fmt option to qemu-img create -b (Uri Lublin)
block-qcow2: keep backing file format in a
From: Avi Kivity a...@redhat.com
Older i386 kernels do not export tsc_khz. Try to make a best effort attempt
by looking up tsc_khz, and falling back to a constant if it isn't exported.
Signed-off-by: Avi Kivity a...@redhat.com
diff --git a/kernel/external-module-compat-comm.h
From: Joerg Roedel joerg.roe...@amd.com
The current method of finding out the size of huge pages does not work
reliably anymore. Current Linux supports more than one huge page size
but /proc/meminfo only show one of the supported sizes.
To find out the real page size used can be found by calling
From: Avi Kivity a...@redhat.com
Conflicts:
arch/ia64/include/asm/kvm_host.h
arch/ia64/kvm/kvm-ia64.c
arch/x86/include/asm/kvm.h
arch/x86/kvm/i8254.c
arch/x86/kvm/i8254.h
arch/x86/kvm/vmx.c
arch/x86/kvm/x86.c
include/linux/kvm.h
From: Avi Kivity a...@redhat.com
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