From: Ian Campbell <ian.campbell@citrix.com>
To: Julien Grall <julien.grall@citrix.com>, xen-devel@lists.xenproject.org
Cc: Zoltan Kiss <zoltan.kiss@huawei.com>, stefano.stabellini@eu.citrix.com
Subject: Re: [PATCH v4 2/4] xen/arm: gic: Check the size of the CPU and vCPU interface retrieved from DT
Date: Fri, 23 Oct 2015 14:21:20 +0100 [thread overview]
Message-ID: <1445606480.2374.160.camel@citrix.com> (raw)
In-Reply-To: <1444328634-32110-3-git-send-email-julien.grall@citrix.com>
On Thu, 2015-10-08 at 19:23 +0100, Julien Grall wrote:
> The size of the CPU interface will used in a follow-up patch to map the
^be
> region in Xen memory.
>
> Based on GICv2 spec, the CPU interface should at least be 8KB, although
> most of the platform we are supporting use incorrectly the GICv1 size
> (i.e 4KB) in their DT. Only warn and update the size to avoid any
> breakage on these platforms.
>
> Furthermore, Xen is relying on the fact that the Virtual CPU interface
> been at least 8KB. As in reality the Virtual CPU interface matches the
s/been/is/
> + /* TODO: Add check on distributor */
> +
> + /*
> + * The GICv2 CPU interface should at least be 8KB. Although, most of the DT
> + * doesn't correctly set it and use the GICv1 CPU interface size (i.e 4KB).
don't
> + &vbase, &vsize);
> if ( res )
> return;
>
> + /*
> + * We emulate a vGICv2 using a GIC CPU interface of GUEST_GICC_SIZE.
> + * So only support GICv2 on GICv3 when the virtuaL CPU interface is
s/L/l/
Apart from the typos:
Acked-by: Ian Campbell <ian.campbell@citrix.com>
next prev parent reply other threads:[~2015-10-23 13:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-08 18:23 [PATCH v4 0/4] xen/arm: gic-v2: Detect automatically aliased GIC 400 Julien Grall
2015-10-08 18:23 ` [PATCH v4 1/4] xen/arm: vgic-v2: Report the correct GICC size to the guest Julien Grall
2015-10-23 13:28 ` Ian Campbell
2015-10-23 13:34 ` Julien Grall
2015-10-23 13:39 ` Ian Campbell
2015-10-23 13:43 ` Julien Grall
2015-10-08 18:23 ` [PATCH v4 2/4] xen/arm: gic: Check the size of the CPU and vCPU interface retrieved from DT Julien Grall
2015-10-23 13:21 ` Ian Campbell [this message]
2015-10-08 18:23 ` [PATCH v4 3/4] xen/arm: gic-v2: Automatically detect aliased GIC400 Julien Grall
2015-10-23 13:23 ` Ian Campbell
2015-10-08 18:23 ` [PATCH v4 4/4] xen/arm: platform: Drop the quirks callback Julien Grall
2015-10-23 13:23 ` Ian Campbell
2015-10-23 13:52 ` [PATCH v4 0/4] xen/arm: gic-v2: Detect automatically aliased GIC 400 Ian Campbell
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