On Wed, Oct 30, 2013 at 09:56:29PM -0700, Paul E. McKenney wrote:
On Thu, Oct 31, 2013 at 01:26:05AM +0200, Michael S. Tsirkin wrote:
Paul, could you review this patch please?
Documentation/memory-barriers.txt says that unlock has a weaker
uni-directional barrier, but in practice
On Thu, Oct 31, 2013 at 02:21:46AM +0200, Michael S. Tsirkin wrote:
commit 8bf00a529967dafbbb210b377c38a15834d1e979:
KVM: VMX: add support for switching of PERF_GLOBAL_CTRL was
as far as I can tell supposed to bring about performance improvement
on hardware that supports it?
No, it (and
Hi Paolo,
On Tue, Oct 29, 2013 at 8:55 PM, Paolo Bonzini pbonz...@redhat.com wrote:
Il 29/10/2013 06:39, Arthur Chunqi Li ha scritto:
What is the dirty page tracking code path? I find a obsoleted flag
dirty_page_log_all in the very previous codes, but I cannot get the
most recent version of
(2013/10/30 23:03), David Ahern wrote:
On 10/29/13 11:59 PM, Masami Hiramatsu wrote:
(2013/10/29 11:58), David Ahern wrote:
To back out a bit, my end goal is to be able to create and merge
perf-events from any context on a KVM-based host -- guest userspace,
guest kernel space, host userspace
On Thu, Oct 17, 2013 at 04:50:45PM +0200, Paolo Bonzini wrote:
The first patch fixes bugs 63121 and 63131 (yeah, all kernel bugs
end with 1). The second patch fixes a typo (the same typo exists
in QEMU).
Paolo Bonzini (2):
KVM: x86: fix KVM_SET_XCRS for CPUs that do not support XSAVE
Il 31/10/2013 09:05, Arthur Chunqi Li ha scritto:
Basically everything that accesses the dirty_bitmap field of struct
kvm_memory_slot is involved. It all starts when the
KVM_SET_USER_MEMORY_REGION ioctl is called with the
KVM_MEM_LOG_DIRTY_PAGES flag set.
I find the mechanism here is
Yet another instruction that we fail to emulate, this time found
in Windows 2008R2 32-bit.
Cc: sta...@vger.kernel.org
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
---
Testcase on its way. BTW, lahf/sahf is another candidate for
#UD emulation.
arch/x86/kvm/emulate.c | 14
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
---
x86/realmode.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/x86/realmode.c b/x86/realmode.c
index 3546771..b9cb634 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -1409,6 +1409,15 @@ static void test_sgdt_sidt(void)
Il 31/10/2013 10:07, Arthur Chunqi Li ha scritto:
Sorry to disturb you with so many trivial questions in KVM EPT memory
management and thanks for your patience.
No problem, please remain onlist though. Adding back kvm@vger.kernel.org.
I got confused in the EPT
page fault processing
Il 31/10/2013 11:46, Ramkumar Ramachandra ha scritto:
The document hasn't been updated since cf3e3d3 (KVM: Document KVM
specific review items, 2010-06-24); kvm does not have a separate
repository anymore.
Maintainer have their repository at
git://git.kernel.org/pub/scm/virt/kvm/kvm.git. The
Cc: Gleb Natapov g...@redhat.com
Cc: Paolo Bonzini pbonz...@redhat.com
Cc: KVM List kvm@vger.kernel.org
Signed-off-by: Ramkumar Ramachandra artag...@gmail.com
---
This is a replacement for [PATCH 2/3] Documentation/kvm: patches
should be against linux.git
Thanks to Paolo for pointing to the
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index fed84d861e7f..366f90cc6fdb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4815,6 +4815,7 @@ M:Gleb Natapov g...@redhat.com
M: Paolo
Il 31/10/2013 11:59, Ramkumar Ramachandra ha scritto:
Cc: Gleb Natapov g...@redhat.com
Cc: Paolo Bonzini pbonz...@redhat.com
Cc: KVM List kvm@vger.kernel.org
Signed-off-by: Ramkumar Ramachandra artag...@gmail.com
---
This is a replacement for [PATCH 2/3] Documentation/kvm: patches
should
Il 31/10/2013 07:47, Gleb Natapov ha scritto:
This looks dubious to me. All other smp_mb__after_* variants are there
because some atomic operations have different memory barrier semantics on
different arches,
It doesn't have to be arches; unlock APIs typically have release
semantics only, but
Il 30/10/2013 20:09, Michael S. Tsirkin ha scritto:
I noticed that srcu_read_lock/unlock both have a memory barrier,
so just by moving srcu_read_unlock earlier we can get rid of
one call to smp_mb().
Unsurprisingly, the gain is small but measureable using the unit test
microbenchmark:
On Thu, Oct 31, 2013 at 12:14:15PM +0100, Paolo Bonzini wrote:
Il 30/10/2013 20:09, Michael S. Tsirkin ha scritto:
I noticed that srcu_read_lock/unlock both have a memory barrier,
so just by moving srcu_read_unlock earlier we can get rid of
one call to smp_mb().
Unsurprisingly, the
On Thu, Oct 31, 2013 at 12:11:21PM +0100, Paolo Bonzini wrote:
Il 31/10/2013 07:47, Gleb Natapov ha scritto:
This looks dubious to me. All other smp_mb__after_* variants are there
because some atomic operations have different memory barrier semantics on
different arches,
It doesn't have
Il 30/10/2013 20:43, Michael S. Tsirkin ha scritto:
fix up typo in comment.
Signed-off-by: Michael S. Tsirkin m...@redhat.com
---
include/linux/kvm_host.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index
On Wed, Oct 30, 2013 at 09:56:29PM -0700, Paul E. McKenney wrote:
On Thu, Oct 31, 2013 at 01:26:05AM +0200, Michael S. Tsirkin wrote:
Paul, could you review this patch please?
Documentation/memory-barriers.txt says that unlock has a weaker
uni-directional barrier, but in practice
On Thu, Oct 31, 2013 at 11:29:42AM +0100, Paolo Bonzini wrote:
Yet another instruction that we fail to emulate, this time found
in Windows 2008R2 32-bit.
Cc: sta...@vger.kernel.org
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
---
Testcase on its way. BTW, lahf/sahf is another
Il 31/10/2013 15:21, Gleb Natapov ha scritto:
On Thu, Oct 31, 2013 at 11:29:42AM +0100, Paolo Bonzini wrote:
Yet another instruction that we fail to emulate, this time found
in Windows 2008R2 32-bit.
Cc: sta...@vger.kernel.org
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
---
On Thu, Oct 31, 2013 at 03:27:48PM +0100, Paolo Bonzini wrote:
Il 31/10/2013 15:21, Gleb Natapov ha scritto:
On Thu, Oct 31, 2013 at 11:29:42AM +0100, Paolo Bonzini wrote:
Yet another instruction that we fail to emulate, this time found
in Windows 2008R2 32-bit.
Cc:
Il 31/10/2013 15:34, Gleb Natapov ha scritto:
I haven't checked AMD doc, but if it is documented that lahf/sahf #UDs at 64
bit we should emulate it correctly.
It says The LAHF instruction can only be executed in 64-bit mode if
supported by the processor implementation. Check the status of ECX
On Thu, Oct 31, 2013 at 03:49:04PM +0100, Paolo Bonzini wrote:
Il 31/10/2013 15:34, Gleb Natapov ha scritto:
I haven't checked AMD doc, but if it is documented that lahf/sahf #UDs at 64
bit we should emulate it correctly.
It says The LAHF instruction can only be executed in 64-bit mode if
On Thu, Oct 31, 2013 at 03:49:04PM +0100, Paolo Bonzini wrote:
Il 31/10/2013 15:34, Gleb Natapov ha scritto:
I haven't checked AMD doc, but if it is documented that lahf/sahf #UDs at 64
bit we should emulate it correctly.
It says The LAHF instruction can only be executed in 64-bit mode if
On 10/31/13, 2:09 AM, Masami Hiramatsu wrote:
(2013/10/30 23:03), David Ahern wrote:
On 10/29/13 11:59 PM, Masami Hiramatsu wrote:
(2013/10/29 11:58), David Ahern wrote:
To back out a bit, my end goal is to be able to create and merge
perf-events from any context on a KVM-based host -- guest
From: Paul Mackerras pau...@samba.org
The VRSAVE register value for a vcpu is accessible through the
GET/SET_SREGS interface for Book E processors, but not for Book 3S
processors. In order to make this accessible for Book 3S processors,
this adds a new register identifier for GET/SET_ONE_REG,
Hi Paolo / Gleb,
This is my current patch queue for ppc. Please pull.
Highlights of this request are:
- Book3s HV and PR can be built into the same kernel
- e500 target debug support
- Book3s POWER8 preparation
- Lots of book3s PR fixes
I left out the FPU rework from Paul in this
From: Paul Mackerras pau...@samba.org
The H_CONFER hypercall is used when a guest vcpu is spinning on a lock
held by another vcpu which has been preempted, and the spinning vcpu
wishes to give its timeslice to the lock holder. We implement this
in the straightforward way using
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 4 +-
arch/powerpc/kvm/e500_mmu.c | 2 +-
arch/powerpc/kvm/e500_mmu_host.c | 3 +-
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
With this patch if HV is included, interrupts come in to the HV version
of the kvmppc_interrupt code, which then jumps to the PR handler,
renamed to kvmppc_interrupt_pr, if the guest is a PR guest. This helps
in enabling both HV and PR, which
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This help ups to select the relevant code in the kernel code
when we later move HV and PR bits as seperate modules. The patch
also makes the config options for PR KVM selectable
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
[agraf: squash in compile fix]
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/Kconfig | 6 +++---
arch/powerpc/kvm/Makefile | 11 ---
From: Paul Mackerras pau...@samba.org
The yield count in the VPA is supposed to be incremented every time
we enter the guest, and every time we exit the guest, so that its
value is even when the vcpu is running in the guest and odd when it
isn't. However, it's currently possible that we
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
drop is_hv_enabled, because that should not be a callback property
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_ppc.h | 6 +-
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This patch moves PR related tracepoints to a separate header. This
enables in converting PR to a kernel module which will be done in
later patches
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This moves the kvmppc_ops callbacks to be a per VM entity. This
enables us to select HV and PR mode when creating a VM. We also
allow both kvm-hv and kvm-pr kernel module to be loaded. To
achieve this we move /dev/kvm ownership to kvm.ko
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
With later patches supporting PR kvm as a kernel module, the changes
that has to be built into the main kernel binary to enable PR KVM module
is now selected via KVM_BOOK3S_PR_POSSIBLE
Signed-off-by: Aneesh Kumar K.V
From: Bharat Bhushan r65...@freescale.com
ehpriv 1 instruction is used for setting software breakpoints
by user space. This patch adds support to exit to user space
with run-debug have relevant information.
As this is the first point we are using run-debug, also defined
the run-debug structure.
From: Bharat Bhushan r65...@freescale.com
For booke3e _PAGE_ENDIAN is not defined. Infact what is defined
is _PAGE_LENDIAN which is wrong and that should be _PAGE_ENDIAN.
There are no compilation errors as
arch/powerpc/include/asm/pte-common.h defines _PAGE_ENDIAN to 0
as it is not defined
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This help us to identify whether we are running with hypervisor mode KVM
enabled. The change is needed so that we can have both HV and PR kvm
enabled in the same kernel.
If both HV and PR KVM are included, interrupts come in to the HV
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
We will use that in the later patch to find the kvm ops handler
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/arm/kvm/arm.c | 5 +++--
From: Bharat Bhushan r65...@freescale.com
This way we can use same data type struct with KVM and
also help in using other debug related function.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/processor.h | 38
From: Bharat Bhushan r65...@freescale.com
G bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting G, so allow him.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/e500.h | 2 +-
1
From: Paul Mackerras pau...@samba.org
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
From: Paul Mackerras pau...@samba.org
This enables us to use the Processor Compatibility Register (PCR) on
POWER7 to put the processor into architecture 2.05 compatibility mode
when running a guest. In this mode the new instructions and registers
that were introduced on POWER7 are disabled in
From: Paul Mackerras pau...@samba.org
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
From: Paul Mackerras pau...@samba.org
add kvmppc_free_vcores() to free the kvmppc_vcore structures
that we allocate for a guest, which are currently being leaked.
Signed-off-by: Paul Mackerras pau...@samba.org
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by:
From: Paul Mackerras pau...@samba.org
When the MM code is invalidating a range of pages, it calls the KVM
kvm_mmu_notifier_invalidate_range_start() notifier function, which calls
kvm_unmap_hva_range(), which arranges to flush all the existing host
HPTEs for guest pages. However, the Linux PTEs
From: Paul Mackerras pau...@samba.org
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
From: Paul Mackerras pau...@samba.org
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)
From: Paul Mackerras pau...@samba.org
This adds the ability to have a separate LPCR (Logical Partitioning
Control Register) value relating to a guest for each virtual core,
rather than only having a single value for the whole VM. This
corresponds to what real POWER hardware does, where there is
From: Bharat Bhushan r65...@freescale.com
For KVM also use the struct debug_reg defined in asm/processor.h
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_host.h | 13 +
arch/powerpc/kvm/booke.c
From: Bharat Bhushan r65...@freescale.com
This patch adds the debug stub support on booke/bookehv.
Now QEMU debug stub can use hw breakpoint, watchpoint and
software breakpoint to debug guest.
This is how we save/restore debug register context when switching
between guest, userspace and kernel
From: Paul Mackerras pau...@samba.org
When an interrupt or exception happens in the guest that comes to the
host, the CPU goes to hypervisor real mode (MMU off) to handle the
exception but doesn't change the MMU context. After saving a few
registers, we then clear the in guest flag. If, for any
From: Paul Mackerras pau...@samba.org
Commit 9d1ffdd8f3 (KVM: PPC: Book3S PR: Don't corrupt guest state
when kernel uses VMX) added a call to kvmppc_load_up_altivec() that
isn't guarded by CONFIG_ALTIVEC, causing a link failure when building
a kernel without CONFIG_ALTIVEC set. This adds an
From: Paul Mackerras pau...@samba.org
This label is not used now.
Signed-off-by: Paul Mackerras pau...@samba.org
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/book3s_hv_interrupts.S | 3 ---
From: Bharat Bhushan r65...@freescale.com
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kernel/process.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/process.c
From: Paul Mackerras pau...@samba.org
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
From: Paul Mackerras pau...@samba.org
Currently, whenever any of the MMU notifier callbacks get called, we
invalidate all the shadow PTEs. This is inefficient because it means
that we typically then get a lot of DSIs and ISIs in the guest to fault
the shadow PTEs back in. We do this even if the
From: Paul Mackerras pau...@samba.org
This makes PR KVM allocate its kvm_vcpu structs from the kvm_vcpu_cache
rather than having them embedded in the kvmppc_vcpu_book3s struct,
which is allocated with vzalloc. The reason is to reduce the
differences between PR and HV KVM in order to make is
From: Paul Mackerras pau...@samba.org
Both PR and HV KVM have separate, identical copies of the
kvmppc_skip_interrupt and kvmppc_skip_Hinterrupt handlers that are
used for the situation where an interrupt happens when loading the
instruction that caused an exit from the guest. To eliminate this
From: Paul Mackerras pau...@samba.org
Since the code in book3s_64_vio_hv.c is called from real mode with HV
KVM, and therefore has to be built into the main kernel binary, this
makes it always built-in rather than part of the KVM module. It gets
called from the KVM module by PR KVM, so this adds
From: Bharat Bhushan r65...@freescale.com
E bit in MAS2 bit indicates whether the page is accessed
in Little-Endian or Big-Endian byte order.
There is no reason to stop guest setting E, so allow him.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf
From: Paul Mackerras pau...@samba.org
Currently we are not saving and restoring the SIAR and SDAR registers in
the PMU (performance monitor unit) on guest entry and exit. The result
is that performance monitoring tools in the guest could get false
information about where a program was executing
From: Paul Mackerras pau...@samba.org
POWER7 and later IBM server processors have a register called the
Program Priority Register (PPR), which controls the priority of
each hardware CPU SMT thread, and affects how fast it runs compared
to other SMT threads. This priority can be controlled by
From: Paul Mackerras pau...@samba.org
If we come out of a guest with an interrupt that we don't know about,
instead of crashing the host with a BUG(), we now return to userspace
with the exit reason set to KVM_EXIT_UNKNOWN and the trap vector in
the hw.hardware_exit_reason field of the kvm_run
From: Paul Mackerras pau...@samba.org
We have two paths into and out of the low-level guest entry and exit
code: from a vcpu task via kvmppc_hv_entry_trampoline, and from the
system reset vector for an offline secondary thread on POWER7 via
kvm_start_guest. Currently both just branch to
From: Paul Mackerras pau...@samba.org
This allows guests to have a different timebase origin from the host.
This is needed for migration, where a guest can migrate from one host
to another and the two hosts might have a different timebase origin.
However, the timebase seen by the guest must not
From: Paul Mackerras pau...@samba.org
Currently PR-style KVM keeps the volatile guest register values
(R0 - R13, CR, LR, CTR, XER, PC) in a shadow_vcpu struct rather than
the main kvm_vcpu struct. For 64-bit, the shadow_vcpu exists in two
places, a kmalloc'd struct and in the PACA, and it gets
From: Paul Mackerras pau...@samba.org
This makes the VRSAVE register value for a vcpu accessible through
the GET/SET_ONE_REG interface on Book E systems (in addition to the
existing GET/SET_SREGS interface), for consistency with Book 3S.
Signed-off-by: Paul Mackerras pau...@samba.org
From: Paul Mackerras pau...@samba.org
This moves the code in book3s_hv_rmhandlers.S that reads any pending
interrupt from the XICS interrupt controller, and works out whether
it is an IPI for the guest, an IPI for the host, or a device interrupt,
into a new function called kvmppc_read_intr.
From: Paul Mackerras pau...@samba.org
This adds the code to interpret 64k HPTEs in the guest hashed page
table (HPT), 64k SLB entries, and to tell the guest about 64k pages
in kvm_vm_ioctl_get_smmu_info(). Guest 64k pages are still shadowed
by 4k pages.
This also adds another hash table to the
From: Michael Neuling mi...@neuling.org
This reserves space in get/set_one_reg ioctl for the extra guest state
needed for POWER8. It doesn't implement these at all, it just reserves
them so that the ABI is defined now.
A few things to note here:
- This add *a lot* state for transactional
From: Paul Mackerras pau...@samba.org
Currently, PR KVM uses 4k pages for the host-side mappings of guest
memory, regardless of the host page size. When the host page size is
64kB, we might as well use 64k host page mappings for guest mappings
of 64kB and larger pages and for guest real-mode
From: Bharat Bhushan r65...@freescale.com
Mark the guest page as accessed so that there is likely
less chances of this page getting swap-out.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Acked-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
From: Bharat Bhushan r65...@freescale.com
KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Acked-by: Michael Neuling mi...@neuling.org
Signed-off-by: Alexander Graf
Hello:
Can you assist me to
move funds from
Singapore? Please reply.
Cham Tao Soon
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Hi,
I need a small help. I am working on a project where i have to monitor
network activity of a VM running on KVM.
I am interested in how much data is going into the VM and how much
data is coming out of the VM. I checked on the net and found out virsh
domifstat is the way to go about it.
1.
These patch series fix 2 vhost-net problems. There were 2 problems after
commit fa7226f88012713a73d0cba4955444ea109e9458.
(1) vhost-net requires tap_fd for VHOST_SET_BACKEND, but opening tap device
was postponed to VIRTIO_CONFIG_S_DRIVER_OK. The wrong order of initialization
caused vhost-net used
Enabling vhost-net encounted an error:
Fatal: VHOST_NET_SET_BACKEND failed 88
The reason is that vhost-net requires tap_fd for VHOST_NET_SET_BACKEND,
however tap_fd is opened after VIRTIO_CONFIG_S_DRIVER_OK. Because the
initialization needs to know the guest features, I suppose the
After features negotiation, kvmtool should tell vhost-net that he's
using mergeable rx buffers.
Signed-off-by: Ying-Shiuan Pan ys...@itri.org.tw
---
tools/kvm/virtio/net.c | 23 +++
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/tools/kvm/virtio/net.c
Hi Paolo / Gleb,
This is my current patch queue for ppc. Please pull.
Highlights of this request are:
- Book3s HV and PR can be built into the same kernel
- e500 target debug support
- Book3s POWER8 preparation
- Lots of book3s PR fixes
I left out the FPU rework from Paul in this
From: Paul Mackerras pau...@samba.org
Currently we are not saving and restoring the SIAR and SDAR registers in
the PMU (performance monitor unit) on guest entry and exit. The result
is that performance monitoring tools in the guest could get false
information about where a program was executing
From: Paul Mackerras pau...@samba.org
The H_CONFER hypercall is used when a guest vcpu is spinning on a lock
held by another vcpu which has been preempted, and the spinning vcpu
wishes to give its timeslice to the lock holder. We implement this
in the straightforward way using
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
With this patch if HV is included, interrupts come in to the HV version
of the kvmppc_interrupt code, which then jumps to the PR handler,
renamed to kvmppc_interrupt_pr, if the guest is a PR guest. This helps
in enabling both HV and PR, which
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
We will use that in the later patch to find the kvm ops handler
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/arm/kvm/arm.c | 5 +++--
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
With later patches supporting PR kvm as a kernel module, the changes
that has to be built into the main kernel binary to enable PR KVM module
is now selected via KVM_BOOK3S_PR_POSSIBLE
Signed-off-by: Aneesh Kumar K.V
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This help ups to select the relevant code in the kernel code
when we later move HV and PR bits as seperate modules. The patch
also makes the config options for PR KVM selectable
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
drop is_hv_enabled, because that should not be a callback property
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_ppc.h | 6 +-
From: Bharat Bhushan r65...@freescale.com
This way we can use same data type struct with KVM and
also help in using other debug related function.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/processor.h | 38
From: Bharat Bhushan r65...@freescale.com
KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Acked-by: Michael Neuling mi...@neuling.org
Signed-off-by: Alexander Graf
From: Bharat Bhushan r65...@freescale.com
G bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting G, so allow him.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/e500.h | 2 +-
1
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 4 +-
arch/powerpc/kvm/e500_mmu.c | 2 +-
arch/powerpc/kvm/e500_mmu_host.c | 3 +-
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
This moves the kvmppc_ops callbacks to be a per VM entity. This
enables us to select HV and PR mode when creating a VM. We also
allow both kvm-hv and kvm-pr kernel module to be loaded. To
achieve this we move /dev/kvm ownership to kvm.ko
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
[agraf: squash in compile fix]
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/Kconfig | 6 +++---
arch/powerpc/kvm/Makefile | 11 ---
From: Bharat Bhushan r65...@freescale.com
ehpriv 1 instruction is used for setting software breakpoints
by user space. This patch adds support to exit to user space
with run-debug have relevant information.
As this is the first point we are using run-debug, also defined
the run-debug structure.
From: Paul Mackerras pau...@samba.org
When an interrupt or exception happens in the guest that comes to the
host, the CPU goes to hypervisor real mode (MMU off) to handle the
exception but doesn't change the MMU context. After saving a few
registers, we then clear the in guest flag. If, for any
From: Bharat Bhushan r65...@freescale.com
This patch adds the debug stub support on booke/bookehv.
Now QEMU debug stub can use hw breakpoint, watchpoint and
software breakpoint to debug guest.
This is how we save/restore debug register context when switching
between guest, userspace and kernel
From: Bharat Bhushan r65...@freescale.com
For KVM also use the struct debug_reg defined in asm/processor.h
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_host.h | 13 +
arch/powerpc/kvm/booke.c
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