From: Marc Zyngier <marc.zyngier@arm.com>
To: Itaru Kitayama <itaru.kitayama@riken.jp>
Cc: kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH] updated: arm64: KVM: vgic: deal with GIC sub-page alignment
Date: Sat, 9 Jul 2016 11:08:49 +0100 [thread overview]
Message-ID: <20160709110849.4d398647@arm.com> (raw)
In-Reply-To: <d91a1d8b-8a83-e676-0d5c-decad046662f@riken.jp>
On Sat, 9 Jul 2016 09:27:21 +0900
Itaru Kitayama <itaru.kitayama@riken.jp> wrote:
Itaru,
> I'm at the latest commit, fa9301d in the gicv-align branch at the
> moment, with that an unmodified QEMU guest boots fine on a 64Kb page
> granular host, thanks to the trapping you introduced.
Please realize that this is a work in progress, and that I'm not even
sure I want to upstream this.
> (I wanted to get some performance statistics of the new feature with
> perf, but on arm64 most of them are unsupported)
Care to mention which ones are missing?
> However, if I rebuild the kernel using defconfig with only the kernel
> page size changed to 16Kb it does not boot at least on Overdrive 3000.
Only a few CPUs support 16kB pages, and Cortex-A57 is definitely not
one of them.
Thanks,
M.
--
Jazz is not dead. It just smells funny.
next prev parent reply other threads:[~2016-07-09 10:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 4:57 [PATCH] updated: arm64: KVM: vgic: deal with GIC sub-page alignment Itaru Kitayama
2016-07-01 8:40 ` Marc Zyngier
2016-07-01 8:59 ` Itaru Kitayama
2016-07-01 9:20 ` Marc Zyngier
2016-07-09 0:27 ` Itaru Kitayama
2016-07-09 0:34 ` Itaru Kitayama
2016-07-09 10:08 ` Marc Zyngier [this message]
2016-07-09 10:32 ` Itaru Kitayama
2016-07-09 20:09 ` Marc Zyngier
2016-07-10 6:49 ` Itaru Kitayama
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