Hi Mark.
Thanks for all the reviews. I am a beginner and you gave me a lot to
learn about.
I will reply to the other patch progressively once I understand better
the issues.
On 23/03/2021 17:37, Marc Zyngier wrote:
On Fri, 19 Mar 2021 16:17:11 +,
Yoan Picchi wrote:
Add a counter for in
On Tue, 23 Mar 2021 17:53:42 +,
Yoan Picchi wrote:
>
> Hi Mark.
s/k/c/, please!
>
> Thanks for all the reviews. I am a beginner and you gave me a lot to
> learn about. I will reply to the other patch progressively once I
> understand better the issues.
I think you should consider what I
Hi Yoan,
On Fri, 19 Mar 2021 16:17:04 +,
Yoan Picchi wrote:
>
> Hi all,
>
> As mentioned in the KVM forum talk from 2019
> (https://kvmforum2019.sched.com/event/Tmwf/kvmstat-and-beyond-past-present-and-future-of-performance-monitoring-christian-borntrager-ibm
> page 10), there is few event
When a VCPU is created, the kvm_vcpu struct is initialized to zero in
kvm_vm_ioctl_create_vcpu(). On VHE systems, the first time
vcpu.arch.mdcr_el2 is loaded on hardware is in vcpu_load(), before it is
set to a sensible value in kvm_arm_setup_debug() later in the run loop. The
result is that KVM ex
On Fri, 19 Mar 2021 16:17:11 +,
Yoan Picchi wrote:
>
> Add a counter for interrupt injections. That is when kvm relay an
> interrupt to the guest (for instance a timer, or a device interrupt
> like from a network card)
>
> Signed-off-by: Yoan Picchi
> ---
> arch/arm64/include/asm/kvm_host.
On Fri, 19 Mar 2021 16:17:10 +,
Yoan Picchi wrote:
>
> Add a counter for when the one want to unmap all the ram of a VM.
> This mostly happens when one restart a VM so we make sure to clear
> the ram and free the memory for other VMs.
Again: unmapping memory from a VM doesn't make it free fo
On Fri, 19 Mar 2021 16:17:09 +,
Yoan Picchi wrote:
>
> Add a counter for when a memory slot is unmapped, meaning that all
> memory belonging to a specific VM is made available to be mapped for
> anoother VM.
No. It just means it is unmapped from the guest. The VMM still has the
pages.
> A m
On Fri, 19 Mar 2021 16:17:08 +,
Yoan Picchi wrote:
>
> Add a counter that triggers when all the cache are flushed. This happens
> when toggling caching for instance.
Which cache?
>
> Signed-off-by: Yoan Picchi
> ---
> arch/arm64/include/asm/kvm_host.h | 1 +
> arch/arm64/kvm/guest.c
On Fri, 19 Mar 2021 16:17:07 +,
Yoan Picchi wrote:
>
> Add some counter for when a dpage get invalidated. The counter isn't
> in the function that actually do it though because it doesn't have
> either a kvm or vcpu argument, so we would have no way to access the
> counters. For this reason,
On Fri, 19 Mar 2021 16:17:06 +,
Yoan Picchi wrote:
>
> Add a counter for remote tlb flushes.
> I think flushing the tlb is important enough of a thing so that one using
> kvm_stat should be aware if their code is trigering several flushes.
> Beside the event is recorded in x86 and ppc as well
On Tue, 23 Mar 2021 11:52:38 +,
Keqian Zhu wrote:
>
> Hi Yoan,
>
> On 2021/3/20 0:17, Yoan Picchi wrote:
> > Add a counter for when a regular page is mapped, and another
> > for when a huge page is mapped.
> >
> > Signed-off-by: Yoan Picchi
> > ---
> > arch/arm64/include/asm/kvm_host.h |
On Mon, 22 Mar 2021 15:06:37 +
Alexandru Elisei wrote:
> Compute the dcache line size when doing dcache maintenance instead of using
> a global variable computed in setup(), which allows us to do dcache
> maintenance at any point in the boot process. This will be useful for
> running as an EF
In order to detect whether a GICv3 CPU interface is MMIO capable,
we switch ICC_SRE_EL1.SRE to 0 and check whether it sticks.
However, this is only possible if *ALL* of the HCR_EL2 interrupt
overrides are set, and the CPU is perfectly allowed to ignore
the write to ICC_SRE_EL1 otherwise. This lead
Hi James,
Sorry for taking so long to reply to this, been busy with other things, but your
comments have been very helpful and they gave me a lot to think about. For the
next iteration of the series I've decided to use pin_user_pages with the
FOLL_LONGTERM flags, similar to how vfio_iommu_type1 do
On Monday 22 Mar 2021 at 17:56:39 (+), Marc Zyngier wrote:
> Now that the read_ctr macro has been specialised for nVHE,
> the whole CPU_FTR_REG_HYP_COPY infrastrcture looks completely
> overengineered.
>
> Simplify it by populating the two u64 quantities (MMFR0 and 1)
> that the hypervisor nee
Hi Marc,
On Monday 22 Mar 2021 at 18:37:14 (+), Marc Zyngier wrote:
> Can't say I'm keen on the yucky bit, but here's an alternative (ha!)
> for you:
>
> diff --git a/arch/arm64/include/asm/assembler.h
> b/arch/arm64/include/asm/assembler.h
> index 1a4cee7eb3c9..7582c3bd2f05 100644
> --- a/a
Hi Yoan,
On 2021/3/20 0:17, Yoan Picchi wrote:
> Add a counter for when a regular page is mapped, and another
> for when a huge page is mapped.
>
> Signed-off-by: Yoan Picchi
> ---
> arch/arm64/include/asm/kvm_host.h | 2 ++
> arch/arm64/kvm/guest.c| 2 ++
> arch/arm64/kvm/mmu.c
Hi Eric,
在 2021/3/22 17:05, Auger Eric 写道:
Hi Chenxiang,
On 3/22/21 7:40 AM, chenxiang (M) wrote:
Hi Eric,
在 2021/3/20 1:36, Auger Eric 写道:
Hi Chenxiang,
On 3/4/21 8:55 AM, chenxiang (M) wrote:
Hi Eric,
在 2021/2/24 4:56, Eric Auger 写道:
Implement domain-selective, pasid selective and p
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