On 2022/11/17 1:19, David Matlack wrote:
On Tue, Nov 15, 2022 at 11:28:56AM +0800, wangyanan (Y) wrote:
Hi Sean, Paolo,
I recently also notice the behavior change of param halt_poll_ns.
Now it loses the ability to:
1) dynamically disable halt polling for all the running VMs
by `echo 0
Hi Sean, Paolo,
I recently also notice the behavior change of param halt_poll_ns.
Now it loses the ability to:
1) dynamically disable halt polling for all the running VMs
by `echo 0 > /sys`
2) dynamically adjust the halt polling interval for all the
running VMs by `echo * > /sys`
While in our ca
On 2021/6/18 19:30, Marc Zyngier wrote:
On Thu, 17 Jun 2021 11:58:23 +0100,
Yanan Wang wrote:
Adjust the parameter "kvm_pfn_t pfn" of __clean_dcache_guest_page
and __invalidate_icache_guest_page to "void *va", which paves the
way for converting these two guest CMO functions into callbacks in
On 2021/6/17 22:20, Marc Zyngier wrote:
On Thu, 17 Jun 2021 13:38:37 +0100,
Will Deacon wrote:
On Thu, Jun 17, 2021 at 06:58:21PM +0800, Yanan Wang wrote:
To prepare for performing CMOs for guest stage-2 in the fault handlers
in pgtable.c, here introduce two cache maintenance callbacks in s
Hi Marc,
On 2021/6/17 16:44, Marc Zyngier wrote:
On Thu, 17 Jun 2021 09:22:51 +0100,
"wangyanan (Y)" wrote:
On 2021/6/17 16:03, Marc Zyngier wrote:
On Thu, 17 Jun 2021 07:48:29 +0100,
"wangyanan (Y)" wrote:
Hi Marc,
On 2021/6/16 21:21, Marc Zyngier wrote:
Hi Yanan,
On 2021/6/17 16:03, Marc Zyngier wrote:
On Thu, 17 Jun 2021 07:48:29 +0100,
"wangyanan (Y)" wrote:
Hi Marc,
On 2021/6/16 21:21, Marc Zyngier wrote:
Hi Yanan,
On Wed, 16 Jun 2021 10:51:57 +0100,
Yanan Wang wrote:
To prepare for performing guest CMOs in the fault handlers in
Hi Marc,
On 2021/6/16 21:21, Marc Zyngier wrote:
Hi Yanan,
On Wed, 16 Jun 2021 10:51:57 +0100,
Yanan Wang wrote:
To prepare for performing guest CMOs in the fault handlers in pgtable.c,
introduce two cache maintenance callbacks in struct kvm_pgtable_mm_ops.
The new callbacks are specific for
On 2021/6/15 17:51, Marc Zyngier wrote:
On Tue, 15 Jun 2021 10:04:36 +0100,
Yanan Wang wrote:
Commit 'b5331379bc626'
(KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set)
has converted the original function name 'unmap_stage2_range' to
'__unmap_stage2_range', but leaving t
On 2021/6/15 17:48, Marc Zyngier wrote:
On Tue, 15 Jun 2021 04:50:19 +0100,
Yanan Wang wrote:
These fixes introduce no functional change but just adjustment about
coding style issues for ARM64 vgic code. They mainly include identation
fix of function parameters/arguments, identation fix of s
Hi Quentin,
On 2021/6/2 19:07, Quentin Perret wrote:
On Thursday 15 Apr 2021 at 19:50:32 (+0800), Yanan Wang wrote:
With a guest translation fault, the memcache pages are not needed if KVM
is only about to install a new leaf entry into the existing page table.
And with a guest permission fault,
Hi Quentin,
On 2021/6/2 18:43, Quentin Perret wrote:
Hi Yanan,
On Thursday 15 Apr 2021 at 19:50:27 (+0800), Yanan Wang wrote:
diff --git a/arch/arm64/include/asm/kvm_pgtable.h
b/arch/arm64/include/asm/kvm_pgtable.h
index c3674c47d48c..a43cbe697b37 100644
--- a/arch/arm64/include/asm/kvm_pgtab
Hi Quentin,
On 2021/6/2 18:58, Quentin Perret wrote:
On Thursday 15 Apr 2021 at 19:50:31 (+0800), Yanan Wang wrote:
In this patch, we move invalidation of I-cache to the fault handlers to
Nit: please avoid using 'This patch' in commit messages, see
Documentation/process/submitting-patches.rst.
Hi Marc,
On 2021/6/2 18:22, Marc Zyngier wrote:
On Thu, 15 Apr 2021 12:50:30 +0100,
Yanan Wang wrote:
We want to move I-cache maintenance for the guest to the stage-2
page table code for performance improvement. Before it can work,
we should first make function invalidate_icache_range availabl
Hi Marc,
On 2021/6/2 18:19, Marc Zyngier wrote:
On Thu, 15 Apr 2021 12:50:28 +0100,
Yanan Wang wrote:
We currently uniformly permorm CMOs of D-cache and I-cache in function
user_mem_abort before calling the fault handlers. If we get concurrent
guest faults(e.g. translation faults, permission f
A really gentle ping ...
Sincerely,
Yanan
On 2021/4/15 19:50, Yanan Wang wrote:
Hi,
This series makes some efficiency improvement of guest stage-2 page
table code, and there are some test results to quantify the benefit.
The code has been re-arranged based on the latest kvmarm/next tree.
Des
Hi Quentin,
On 2021/4/9 16:08, Quentin Perret wrote:
Hi Yanan,
On Friday 09 Apr 2021 at 11:36:51 (+0800), Yanan Wang wrote:
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
+static void stage2_invalidate_icache(void *addr, u64 size)
+{
+ if (icache_is_aliasing())
On 2021/4/7 23:35, Alexandru Elisei wrote:
Hi Yanan,
On 3/26/21 3:16 AM, Yanan Wang wrote:
With a guest translation fault, the memcache pages are not needed if KVM
is only about to install a new leaf entry into the existing page table.
And with a guest permission fault, the memcache pages are
Hi Alex,
On 2021/4/7 23:31, Alexandru Elisei wrote:
Hi Yanan,
On 3/26/21 3:16 AM, Yanan Wang wrote:
We currently uniformly permorm CMOs of D-cache and I-cache in function
user_mem_abort before calling the fault handlers. If we get concurrent
guest faults(e.g. translation faults, permission fau
Hi Alex,
On 2021/3/26 1:26, Alexandru Elisei wrote:
Hi Yanan,
On 2/8/21 11:22 AM, Yanan Wang wrote:
With a guest translation fault, the memcache pages are not needed if KVM
is only about to install a new leaf entry into the existing page table.
And with a guest permission fault, the memcache p
patch, since it's easier to get the full
context.
On 3/4/21 7:07 AM, wangyanan (Y) wrote:
Hi Alex,
On 2021/3/4 1:27, Alexandru Elisei wrote:
Hi Yanan,
On 3/3/21 11:04 AM, wangyanan (Y) wrote:
Hi Alex,
On 2021/3/3 1:13, Alexandru Elisei wrote:
Hello,
On 2/8/21 11:22 AM, Yanan Wang
On 2021/3/9 16:43, Marc Zyngier wrote:
On Tue, 09 Mar 2021 08:34:43 +,
"wangyanan (Y)" wrote:
On 2021/3/9 0:34, Will Deacon wrote:
On Mon, Jan 25, 2021 at 10:10:44PM +0800, Yanan Wang wrote:
After dirty-logging is stopped for a VM configured with huge mappings,
KVM will r
On 2021/3/9 0:34, Will Deacon wrote:
On Mon, Jan 25, 2021 at 10:10:44PM +0800, Yanan Wang wrote:
After dirty-logging is stopped for a VM configured with huge mappings,
KVM will recover the table mappings back to block mappings. As we only
replace the existing page tables with a block entry and
On 2021/3/4 15:07, wangyanan (Y) wrote:
Hi Alex,
On 2021/3/4 1:27, Alexandru Elisei wrote:
Hi Yanan,
On 3/3/21 11:04 AM, wangyanan (Y) wrote:
Hi Alex,
On 2021/3/3 1:13, Alexandru Elisei wrote:
Hello,
On 2/8/21 11:22 AM, Yanan Wang wrote:
When KVM needs to coalesce the normal page
Hi Alex,
On 2021/3/4 1:27, Alexandru Elisei wrote:
Hi Yanan,
On 3/3/21 11:04 AM, wangyanan (Y) wrote:
Hi Alex,
On 2021/3/3 1:13, Alexandru Elisei wrote:
Hello,
On 2/8/21 11:22 AM, Yanan Wang wrote:
When KVM needs to coalesce the normal page mappings into a block mapping,
we currently
Hi Alex,
On 2021/3/3 1:13, Alexandru Elisei wrote:
Hello,
On 2/8/21 11:22 AM, Yanan Wang wrote:
When KVM needs to coalesce the normal page mappings into a block mapping,
we currently invalidate the old table entry first followed by invalidation
of TLB, then unmap the page mappings, and install
On 2021/2/8 19:22, Yanan Wang wrote:
When KVM needs to coalesce the normal page mappings into a block mapping,
we currently invalidate the old table entry first followed by invalidation
of TLB, then unmap the page mappings, and install the block entry at last.
It will cost a long time to unmap
On 2021/2/25 17:55, Marc Zyngier wrote:
Hi Yanan,
On Mon, 08 Feb 2021 11:22:47 +,
Yanan Wang wrote:
We currently uniformly clean dcache in user_mem_abort() before calling the
fault handlers, if we take a translation fault and the pfn is cacheable.
But if there are concurrent translation
Hi Marc, Alex,
On 2021/2/26 2:30, Marc Zyngier wrote:
On Thu, 25 Feb 2021 17:39:00 +,
Alexandru Elisei wrote:
Hi Marc,
On 2/25/21 9:55 AM, Marc Zyngier wrote:
Hi Yanan,
On Mon, 08 Feb 2021 11:22:47 +,
Yanan Wang wrote:
We currently uniformly clean dcache in user_mem_abort() before
On 2021/2/25 1:20, Alexandru Elisei wrote:
Hi,
On 2/24/21 2:35 AM, wangyanan (Y) wrote:
Hi Alex,
On 2021/2/23 23:55, Alexandru Elisei wrote:
Hi Yanan,
I wanted to review the patches, but unfortunately I get an error when trying to
apply the first patch in the series:
Applying: KVM: arm64
Hi Alex,
On 2021/2/23 23:55, Alexandru Elisei wrote:
Hi Yanan,
I wanted to review the patches, but unfortunately I get an error when trying to
apply the first patch in the series:
Applying: KVM: arm64: Move the clean of dcache to the map handler
error: patch failed: arch/arm64/kvm/hyp/pgtable.
Hi Marc,
On 2021/1/22 19:47, Marc Zyngier wrote:
Hi Yanan,
On 2021-01-22 10:13, Yanan Wang wrote:
Hi, Will, Marc,
Is there any further comment on the v3 series I post previously?
None, I was planning to queue them for 5.12 over the weekend.
If they are not fine to you, then I think maybe w
Hi Marc,
On 2021/1/22 19:47, Marc Zyngier wrote:
Hi Yanan,
On 2021-01-22 10:13, Yanan Wang wrote:
Hi, Will, Marc,
Is there any further comment on the v3 series I post previously?
None, I was planning to queue them for 5.12 over the weekend.
If they are not fine to you, then I think maybe w
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