linux-kernel - Re: [PATCH v5 00/22] xen/arm64: Add support for 64KB page in Linux

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Message-ID: <20150930130429.GG10997@leverpostej>
Date:	Wed, 30 Sep 2015 14:04:30 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Julien Grall <julien.grall@...rix.com>
Cc:	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
	"wei.liu2@...rix.com" <wei.liu2@...rix.com>,
	"Ian.Campbell@...rix.com" <Ian.Campbell@...rix.com>,
	"stefano.stabellini@...citrix.com" <stefano.stabellini@...citrix.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"david.vrabel@...rix.com" <david.vrabel@...rix.com>,
	"boris.ostrovsky@...cle.com" <boris.ostrovsky@...cle.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"roger.pau@...rix.com" <roger.pau@...rix.com>,
	Suzuki Poulose <Suzuki.Poulose@....com>
Subject: Re: [PATCH v5 00/22] xen/arm64: Add support for 64KB page in Linux

> > Just to check, would this be expected to work with a 16K DomU (e.g.
> > [2])?
> > 
> > From a quick scan it looks like the relaxations provided by this series
> > should work so long as PAGE_SIZE % XEN_PAGE_SIZE == 0, assuming I
> > haven't missed something.
> 
> Correct, this series is able to cope with any PAGE_SIZE as long as it's
> a multiple of the granularity used by Xen (i.e 4KB on ARM).

[...]

> > Would any of these require more work to also handle 16K?
> 
> No. It should just boot on Xen as long as the CPU is support 16K
> granularity.

Great to hear, thanks!

Mark.
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