Re: [PATCH 0/2] vhot-net: Use kvm_memslots instead of vhost_memory to translate GPA to HVA

On Fri, 2011-12-16 at 15:40 +0800, Zang Hongyong wrote: > 于 2011/12/16,星期五 15:05, Sasha Levin 写道: > > On Fri, 2011-12-16 at 13:32 +0800, zanghongy...@huawei.com wrote: > >> From: Hongyong Zang > >> > >> Vhost-net uses its own vhost_memory, which results from user space (qemu) > >> info, > >> to tr

Re: [PATCH 0/2] vhot-net: Use kvm_memslots instead of vhost_memory to translate GPA to HVA

On Fri, 2011-12-16 at 09:59 +0200, Sasha Levin wrote: > There has been a great deal of effort to keep vhost and kvm untangled. > One example is the memory translation it has to do, another one is the > eventfd/irqfd thing it does just so it could signal an IRQ in the guest > instead of accessing th

Re: [PATCH 0/2] vhot-net: Use kvm_memslots instead of vhost_memory to translate GPA to HVA

于 2011/12/16,星期五 15:59, Sasha Levin 写道: > On Fri, 2011-12-16 at 15:40 +0800, Zang Hongyong wrote: >> 于 2011/12/16,星期五 15:05, Sasha Levin 写道: >>> On Fri, 2011-12-16 at 13:32 +0800, zanghongy...@huawei.com wrote: From: Hongyong Zang Vhost-net uses its own vhost_memory, which results fr

Re: [PATCH] kvm tools: Make the whole guest memory mergeable

于 2011/12/16,星期五 15:23, Sasha Levin 写道: > On Fri, 2011-12-16 at 15:02 +0800, Zang Hongyong wrote: >> 于 2011/12/16,星期五 13:50, Sasha Levin 写道: >>> On Fri, 2011-12-16 at 09:01 +0800, zanghongy...@huawei.com wrote: If a guest's ram_size exceeds KVM_32BIT_GAP_START, the corresponding kvm tool

[PATCH] kvm tools: Trivial cleanup

Signed-off-by: Sasha Levin --- tools/kvm/disk/qcow.c | 26 -- tools/kvm/ioport.c |7 ++- tools/kvm/pci.c|6 -- tools/kvm/symbol.c | 18 +- tools/kvm/term.c |1 - tools/kvm/util/util.c |

Re: [PATCH] kvm tools: Make the whole guest memory mergeable

On Fri, 2011-12-16 at 16:36 +0800, Zang Hongyong wrote: > 于 2011/12/16,星期五 15:23, Sasha Levin 写道: > > On Fri, 2011-12-16 at 15:02 +0800, Zang Hongyong wrote: > >> 于 2011/12/16,星期五 13:50, Sasha Levin 写道: > >>> On Fri, 2011-12-16 at 09:01 +0800, zanghongy...@huawei.com wrote: > If a guest's ram_

Re: [PATCH] kvm tools: Trivial cleanup

On Fri, Dec 16, 2011 at 10:40:06AM +0200, Sasha Levin wrote: > Signed-off-by: Sasha Levin > --- Thanks, Sasha! Cyrill -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/maj

[PATCH] kvm tools: Fix 'make kvmconfig'

Set features which depend on the config we select to make 'make kvmconfig' non-interactive. Signed-off-by: Sasha Levin --- arch/x86/Kconfig |1 + scripts/kconfig/Makefile |1 + 2 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig inde

Re: [PATCH] kvm tools: Fix 'make kvmconfig'

* Sasha Levin wrote: > Set features which depend on the config we select to make 'make kvmconfig' > non-interactive. > > Signed-off-by: Sasha Levin Acked-by: Ingo Molnar Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to major

Re: [PATCH] kvm tools: Make the whole guest memory mergeable

于 2011/12/16,星期五 16:45, Sasha Levin 写道: > On Fri, 2011-12-16 at 16:36 +0800, Zang Hongyong wrote: >> 于 2011/12/16,星期五 15:23, Sasha Levin 写道: >>> On Fri, 2011-12-16 at 15:02 +0800, Zang Hongyong wrote: 于 2011/12/16,星期五 13:50, Sasha Levin 写道: > On Fri, 2011-12-16 at 09:01 +0800, zanghongy...

Re: [Qemu-devel] [PATCH] virtio-serial: Allow one MSI-X vector per virtqueue

On (Fri) 16 Dec 2011 [09:14:26], zanghongy...@huawei.com wrote: > From: Hongyong Zang > > In pci_enable_msix(), the guest's virtio-serial driver tries to set msi-x > with one vector per queue. But it fails and eventually all virtio-serial > ports share one MSI-X vector. Because every virtio-seria

Re: [PATCH] kvm tools: Make the whole guest memory mergeable

On Fri, 2011-12-16 at 17:33 +0800, Zang Hongyong wrote: > > Do you see an issue with increasing kvm->ram_size? > > > Yes, it will cause some problems after simply increase the kvm->ram_size. > For examples: > In kvm__init_ram() code we use kvm->ram_size to calculate the size of > the second > RAM r

[PATCH 0/8] KVM: MMU: reduce the size of shadow page structure and some cleanup

In this patchset, we observably reduce the size of struct kvm_mmu_page and let the code more simple. And this patchset have already tested by unittest and RHEL.6.1 setup/boot/reboot/shutdown. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@v

[PATCH 1/8] KVM: MMU: combine unsync and unsync_children

unsync is only used for the page of level == 1 and unsync_children is only used in the upper page, so combine them to reduce the size of shadow page structure Signed-off-by: Xiao Guangrong --- Documentation/virtual/kvm/mmu.txt |5 ++- arch/x86/include/asm/kvm_host.h | 14 +++- ar

[PATCH 2/8] KVM: MMU: set the dirty bit for the upper shadow page

Upper page do not need to be tracked the status bit, it is safe to set the dirty and let cpu to happily prefetch it Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 13 + 1 files changed, 5 insertions(+), 8 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c in

[PATCH 3/8] KVM: MMU: do not add a nonpresent spte to rmaps of its child

Set the spte before adding it to the rmap of its child so that all parent spte are valid when propagate unsync bit from a usnync page / children page And this feature is needed by the later patch Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 74 +++

[PATCH 4/8] KVM: MMU: drop unsync_child_bitmap

unsync_child_bitmap is used to record which spte has unsync page or unsync children, we can set a free bit in the spte instead of it Signed-off-by: Xiao Guangrong --- Documentation/virtual/kvm/mmu.txt |4 -- arch/x86/include/asm/kvm_host.h |1 - arch/x86/kvm/mmu.c| 77

[PATCH 5/8] KVM: MMU: optimize walking unsync shadow page

Exactly, unysnc_children is the number of unsync sptes, we can use to avoid unnecessary spte fetching Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c |5 - 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 9bd2084..16e0642 1

[PATCH 6/8] KVM: MMU: optimize handing invlpg

Use unsync bit to see if the spte is point to unsync child Signed-off-by: Xiao Guangrong --- arch/x86/kvm/paging_tmpl.h |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index c79c503..5333256 100644 --- a/arch/x86/k

[PATCH 7/8] KVM: MMU: remove the redundant get_written_sptes

get_written_sptes is called twice in kvm_mmu_pte_write, one of them can be removed Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c |6 ++ 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 16e0642..5d0f0e3 100644 --- a/arch/x

[PATCH 8/8] KVM: MMU: remove PT64_SECOND_AVAIL_BITS_SHIFT

It is not used, remove it Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c |1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 5d0f0e3..234a32e 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -91,7 +91,6 @@ module

Re: [PATCH v4] kvm: make vcpu life cycle separated from kvm instance

On Thu, Dec 15, 2011 at 03:48:38PM +0900, Takuya Yoshikawa wrote: > (2011/12/15 13:28), Liu Ping Fan wrote: > > From: Liu Ping Fan > > > > Currently, vcpu can be destructed only when kvm instance destroyed. > > Change this to vcpu's destruction before kvm instance, so vcpu MUST > > and CAN be dest

Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stopped by host

On Thu, Dec 15, 2011 at 12:21:16PM +0200, Avi Kivity wrote: > On 12/14/2011 08:21 PM, Marcelo Tosatti wrote: > > On Wed, Dec 14, 2011 at 04:39:56PM +0200, Avi Kivity wrote: > > > On 12/14/2011 02:16 PM, Marcelo Tosatti wrote: > > > > > Having this controlled from userspace means it doesn't work for

Re: [PATCH 4/4] KVM: MMU: Make mmu_shrink() scan nr_to_scan shadow pages

On Mon, Dec 12, 2011 at 07:26:47AM +0900, Takuya Yoshikawa wrote: > From: Takuya Yoshikawa > > Currently, mmu_shrink() tries to free a shadow page from one kvm and > does not use nr_to_scan correctly. > > This patch fixes this by making it try to free some shadow pages from > each kvm. The numb

Re: [PATCH 4/4] KVM: MMU: Make mmu_shrink() scan nr_to_scan shadow pages

On Fri, 16 Dec 2011 09:06:11 -0200 Marcelo Tosatti wrote: > On Mon, Dec 12, 2011 at 07:26:47AM +0900, Takuya Yoshikawa wrote: > > From: Takuya Yoshikawa > > > > Currently, mmu_shrink() tries to free a shadow page from one kvm and > > does not use nr_to_scan correctly. > > > > This patch fixes

Re: [PATCH 2/2] kvm tools: Submit multiple virtio-blk requests in parallel

On 12/15/2011 08:15 PM, Sasha Levin wrote: > When using AIO, submit all requests which exists in the vring in a single > io_submit instead of one io_submit for each descriptor. > > Benchmarks: > > Short version: 15%+ increase in IOPS, small increase in BW. > > Read IOPS: > Before: > vda: ios=2

Re: [PATCH 0/4 V7] Avoid soft lockup message when KVM is stopped by host

On Thursday 15 December 2011, Eric B Munson wrote: > Documentation/virtual/kvm/api.txt | 12 > arch/ia64/include/asm/kvm_para.h|5 + > arch/powerpc/include/asm/kvm_para.h |5 + > arch/s390/include/asm/kvm_para.h|5 + > arch/x86/include/asm/kvm_host.

Re: [PATCH 3.2] KVM: Make KVM_INTEL depend on CPU_SUP_INTEL

On 12/14/2011 02:27 AM, Avi Kivity wrote: > PMU virtualization needs to talk to Intel-specific bits of perf; these are > only available when CPU_SUP_INTEL=y. > > Fixes > > arch/x86/built-in.o: In function `atomic_switch_perf_msrs': > vmx.c:(.text+0x6b1d4): undefined reference to `perf_guest_g

Re: [RFT PATCH] blkio: alloc per cpu data from worker thread context( Re: kvm deadlock)

On Dec 15, 2011, at 1:47 PM, Vivek Goyal wrote: > Ok, I continued to develop on the patch which tries to allocate per cpu > stats from worker thread context. Here is the patch. > > Can the reporter please try out the patch and see if it helps. I am not > sure if deadlock was because of mutex issu

Re: [RFT PATCH] blkio: alloc per cpu data from worker thread context( Re: kvm deadlock)

On Fri, Dec 16, 2011 at 12:43:52PM -0600, Nate Custer wrote: > > On Dec 15, 2011, at 1:47 PM, Vivek Goyal wrote: > > Ok, I continued to develop on the patch which tries to allocate per cpu > > stats from worker thread context. Here is the patch. > > > > Can the reporter please try out the patch a

[PATCH v5] kvm: make vcpu life cycle separated from kvm instance

From: Liu Ping Fan Currently, vcpu can be destructed only when kvm instance destroyed. Change this to vcpu's destruction before kvm instance, so vcpu MUST and CAN be destroyed before kvm's destroy. Signed-off-by: Liu Ping Fan --- arch/x86/kvm/i8254.c | 10 +++-- arch/x86/kvm/i8259.c

Re: [PATCH v4] kvm: make vcpu life cycle separated from kvm instance

2011/12/15 Takuya Yoshikawa : > (2011/12/15 13:28), Liu Ping Fan wrote: >> From: Liu Ping Fan >> >> Currently, vcpu can be destructed only when kvm instance destroyed. >> Change this to vcpu's destruction before kvm instance, so vcpu MUST >> and CAN be destroyed before kvm's destroy. > > Could you