On Tue, May 31, 2022 at 06:01:58PM +0100, Will Deacon wrote:
> Have you spotted any pattern for when the leak occurs? How are you
> terminating the guest?
It just to send a SIGTERM to the qemu-system-aarch64 process. Origially,
right after sending the signal, it will remove_id/unbind from the vfio
On Tue, May 31, 2022 at 05:57:11PM +0100, Will Deacon wrote:
> On Thu, May 26, 2022 at 04:39:56PM -0400, Qian Cai wrote:
> > Running some SR-IOV workloads could trigger some leak reports from
> > kmemleak.
> >
> > unreferenced object 0x080243cef500 (size 128):
_stage2_pgd() from
kvm_arch_flush_shadow_all() into kvm_arch_destroy_vm() due to the issue
mentioned in the "Fixes" commit below. Thus, fixed it by freeing the
memory from kvm_arch_destroy_vm() only if the MMU notifier is not even
initialized.
Fixes: 293f293637b5 ("kvm-arm: Unmap shadow pagetables p
On Tue, Apr 19, 2022 at 12:22:08PM +0100, Mark Brown wrote:
> This series provides initial support for the ARMv9 Scalable Matrix
> Extension (SME). SME takes the approach used for vectors in SVE and
> extends this to provide architectural support for matrix operations. A
> more detailed overview
On Tue, Apr 19, 2022 at 12:22:08PM +0100, Mark Brown wrote:
> This series provides initial support for the ARMv9 Scalable Matrix
> Extension (SME). SME takes the approach used for vectors in SVE and
> extends this to provide architectural support for matrix operations. A
> more detailed overview
On Wed, Apr 27, 2022 at 06:14:31PM +0100, Mark Brown wrote:
> On Wed, Apr 27, 2022 at 01:08:58PM -0400, Qian Cai wrote:
> > On Tue, Apr 19, 2022 at 12:22:08PM +0100, Mark Brown wrote:
>
> > > but not SVE, SME is an ARMv9 feature and SVE is mandatory for ARMv9.
> > &g
On Mon, Feb 07, 2022 at 03:20:32PM +, Mark Brown wrote:
> Since all the fields in the main ID registers are 4 bits wide we have up
> until now not bothered specifying the width in the code. Since we now
> wish to use this mechanism to enumerate features from the floating point
> feature registe
On 10/27/21 3:46 AM, Marc Zyngier wrote:
> That's an architectural definition that doesn't cause any problem.
> If anything, that's documentation.
>
> We have *tons* of other definitions with no user all over the
> arm64 code. They save the exact same purpose.
Understood. Thanks for the quick
On 10/27/21 3:34 AM, Marc Zyngier wrote:
> I don't think this makes much sense. This is bound to eventually clash
> with another variable, and you're back to square one.
Yes, perhaps. We don't have a namespace feature in C. Thanks for taking
a look, Marc.
___
TRNG_NO_ENTROPY was unused when introduced and now. This is also caught by
GCC (W=2):
arch/arm64/kvm/trng.c:17: warning: macro "TRNG_NO_ENTROPY" is not used
[-Wunused-macros]
17 | #define TRNG_NO_ENTROPY ((unsigned long)-3)
Signed-off-by: Qian Cai
---
arch/arm64/kvm/trng.c | 1
l_hyp_ret(__kvm_vcpu_run, vcpu);
| ^~~~
arch/arm64/kvm/arm.c:773:6: note: shadowed declaration is here
773 | int ret;
| ^~~
Signed-off-by: Qian Cai
---
arch/arm64/include/asm/kvm_host.h | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff
On Mon, 2021-01-04 at 18:26 +, Marc Zyngier wrote:
> What I'm suggesting is this [1], which is to get rid of KVM_ARM_PMU
> completely. At least, the kernel configuration will be consistent.
>
Do you have a patch for CONFIG_KVM to select HW_PERF_EVENTS then? I could cook
one if not.
> Overall
On Mon, 2021-01-04 at 16:27 +, Marc Zyngier wrote:
> On 2021-01-04 16:22, Qian Cai wrote:
> > On Mon, 2021-01-04 at 16:08 +, Marc Zyngier wrote:
> > > On 2021-01-04 15:47, Qian Cai wrote:
> > > > On Thu, 2020-12-10 at 08:30 +, Marc Zyngier wrote:
> >
On Mon, 2021-01-04 at 16:08 +, Marc Zyngier wrote:
> On 2021-01-04 15:47, Qian Cai wrote:
> > On Thu, 2020-12-10 at 08:30 +, Marc Zyngier wrote:
> > > We reset the guest's view of PMCR_EL0 unconditionally, based on
> > > the host's view of this
On Thu, 2020-12-10 at 08:30 +, Marc Zyngier wrote:
> We reset the guest's view of PMCR_EL0 unconditionally, based on
> the host's view of this register. It is however legal for an
> imnplementation not to provide any PMU, resulting in an UNDEF.
>
> The obvious fix is to skip the reset of this
On Wed, 2020-12-02 at 18:41 +, David Brazdil wrote:
> Add a host-initialized constant to KVM nVHE hyp code for converting
> between EL2 linear map virtual addresses and physical addresses.
> Also add `__hyp_pa` macro that performs the conversion.
>
> Signed-off-by: David Brazdil
> ---
> arch
> On Jun 3, 2020, at 3:05 PM, Andrew Morton wrote:
>
> A bunch of new material just landed in linux-next/powerpc.
>
> The timing is awkward! I trust this will be going into mainline during
> this merge window? If not, please drop it and repull after -rc1.
I have noticed the same pattern ov
~
arch/arm64/kvm/regmap.c:187:2: note: here
case KVM_SPSR_FIQ:
^~~~
Fixes: a892819560c4 ("KVM: arm64: Prepare to handle deferred save/restore of
32-bit registers")
Signed-off-by: Qian Cai
---
arch/arm64/kvm/regmap.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/
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