From: david.vrabel@citrix.com (David Vrabel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] xen/arm: introduce XENFEAT_grant_map_11
Date: Tue, 8 Jul 2014 17:16:50 +0100 [thread overview]
Message-ID: <53BC1972.9050907@citrix.com> (raw)
In-Reply-To: <1404834132-15847-1-git-send-email-stefano.stabellini@eu.citrix.com>
On 08/07/14 16:42, Stefano Stabellini wrote:
> The flag tells us that the hypervisor maps a grant page to guest
> physical address == machine address of the page in addition to the
> normal grant mapping address. It is needed to properly issue cache
> maintenance operation at the completion of a DMA operation involving a
> foreign grant.
[...]
> +/* Xen also maps grant references at pfn = mfn */
> +#define XENFEAT_grant_map_11 12
I keep reading this as "grant map eleven". I think you've used this
abbreviation else where so you should probably keep it as-is.
I might have picked XENFEAT_grant_map_identity.
David
WARNING: multiple messages have this Message-ID (diff)
From: David Vrabel <david.vrabel@citrix.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
xen-devel@lists.xensource.com
Cc: julien.grall@citrix.com, v1ne2go@gmail.com,
Ian.Campbell@citrix.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/3] xen/arm: introduce XENFEAT_grant_map_11
Date: Tue, 8 Jul 2014 17:16:50 +0100 [thread overview]
Message-ID: <53BC1972.9050907@citrix.com> (raw)
In-Reply-To: <1404834132-15847-1-git-send-email-stefano.stabellini@eu.citrix.com>
On 08/07/14 16:42, Stefano Stabellini wrote:
> The flag tells us that the hypervisor maps a grant page to guest
> physical address == machine address of the page in addition to the
> normal grant mapping address. It is needed to properly issue cache
> maintenance operation at the completion of a DMA operation involving a
> foreign grant.
[...]
> +/* Xen also maps grant references at pfn = mfn */
> +#define XENFEAT_grant_map_11 12
I keep reading this as "grant map eleven". I think you've used this
abbreviation else where so you should probably keep it as-is.
I might have picked XENFEAT_grant_map_identity.
David
next prev parent reply other threads:[~2014-07-08 16:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-08 15:40 [PATCH v2 0/3] xen/arm: fix "xen_add_mach_to_phys_entry: cannot add" problem Stefano Stabellini
2014-07-08 15:40 ` Stefano Stabellini
2014-07-08 15:42 ` [PATCH v2 1/3] xen/arm: introduce XENFEAT_grant_map_11 Stefano Stabellini
2014-07-08 15:42 ` Stefano Stabellini
2014-07-08 15:49 ` Ian Campbell
2014-07-08 15:49 ` Ian Campbell
2014-07-08 15:54 ` Stefano Stabellini
2014-07-08 15:54 ` Stefano Stabellini
2014-07-08 15:59 ` Ian Campbell
2014-07-08 15:59 ` Ian Campbell
2014-07-08 16:53 ` [Xen-devel] " Julien Grall
2014-07-08 16:53 ` Julien Grall
2014-07-08 16:16 ` David Vrabel [this message]
2014-07-08 16:16 ` David Vrabel
2014-07-08 15:42 ` [PATCH v2 2/3] xen/arm: reimplement xen_dma_unmap_page & friends Stefano Stabellini
2014-07-08 15:42 ` Stefano Stabellini
2014-07-08 15:42 ` [PATCH v2 3/3] xen/arm: remove mach_to_phys rbtree Stefano Stabellini
2014-07-08 15:42 ` Stefano Stabellini
2014-07-08 16:05 ` [Xen-devel] [PATCH v2 0/3] xen/arm: fix "xen_add_mach_to_phys_entry: cannot add" problem Konrad Rzeszutek Wilk
2014-07-08 16:05 ` Konrad Rzeszutek Wilk
2014-07-09 10:30 ` [Xen-devel] " Stefano Stabellini
2014-07-09 10:30 ` Stefano Stabellini
2014-07-09 13:47 ` Konrad Rzeszutek Wilk
2014-07-09 13:47 ` Konrad Rzeszutek Wilk
2014-07-09 14:14 ` Stefano Stabellini
2014-07-09 14:14 ` Stefano Stabellini
2014-07-09 14:31 ` Denis Schneider
2014-07-09 14:31 ` Denis Schneider
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