Re: [PATCH v5 08/30] KVM: arm64: make kvm_at() take an OP_AT_*

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On Fri, 30 Aug 2024 10:05:22 +0100,
Will Deacon <will@xxxxxxxxxx> wrote:
> 
> Hey Marc,
> 
> On Fri, Aug 30, 2024 at 09:01:18AM +0100, Marc Zyngier wrote:
> > On Fri, 23 Aug 2024 14:48:11 +0100,
> > Will Deacon <will@xxxxxxxxxx> wrote:
> > > 
> > > On Thu, Aug 22, 2024 at 04:10:51PM +0100, Joey Gouly wrote:
> > > > To allow using newer instructions that current assemblers don't know about,
> > > > replace the `at` instruction with the underlying SYS instruction.
> > > > 
> > > > Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx>
> > > > Cc: Marc Zyngier <maz@xxxxxxxxxx>
> > > > Cc: Oliver Upton <oliver.upton@xxxxxxxxx>
> > > > Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> > > > Cc: Will Deacon <will@xxxxxxxxxx>
> > > > Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx>
> > > > ---
> > > >  arch/arm64/include/asm/kvm_asm.h       | 3 ++-
> > > >  arch/arm64/kvm/hyp/include/hyp/fault.h | 2 +-
> > > >  2 files changed, 3 insertions(+), 2 deletions(-)
> > > 
> > > Marc -- what would you like to do with this patch? I think the POE series
> > > is really close now, so ideally I'd queue the lot on a branch in arm64
> > > and you could pull the first ~10 patches into kvmarm if you need 'em.
> > > 
> > > Would what work for you, or did you have something else in mind (since
> > > this one is also included in your series adding nv support for AT).
> > 
> > Is there any progress on this front? I am quite eager to queue the AT
> > series, but the dependency on this patch is preventing me to do so.
> > 
> > I can see there are outstanding questions on the POE series, so I was
> > wondering if we should consider reversing the dependency: I can create
> > a stable branch with this single patch, which you can pull as a prefix
> > of the POE series.
> 
> That sounds like a good idea. The uaccess discussion seems to have
> stalled and I don't really want to merge the series without concluding
> that.
> 
> So please go ahead with this single patch and I'll pull it in if things
> start moving again.

Now pushed to [1].

Thanks,

	M.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git/log/?h=arm64-shared-6.12

-- 
Without deviation from the norm, progress is not possible.




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