From: David Vrabel <david.vrabel@citrix.com>
To: Juergen Gross <jgross@suse.com>,
xen-devel@lists.xensource.com, konrad.wilk@oracle.com,
boris.ostrovsky@oracle.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [Patch V4 13/16] xen: add explicit memblock_reserve() calls for special pages
Date: Mon, 8 Jun 2015 13:16:14 +0100 [thread overview]
Message-ID: <5575878E.4040109@citrix.com> (raw)
In-Reply-To: <1433765217-16333-14-git-send-email-jgross@suse.com>
On 08/06/15 13:06, Juergen Gross wrote:
> Some special pages containing interfaces to xen are being reserved
> implicitly only today. The memblock_reserve() call to reserve them is
> meant to reserve the p2m list supplied by xen. It is just reserving
> not only the p2m list itself, but some more pages up to the start of
> the xen built page tables.
>
> To be able to move the p2m list to another pfn range, which is needed
> for support of huge RAM, this memblock_reserve() must be split up to
> cover all affected reserved pages explicitly.
>
> The affected pages are:
> - start_info page
> - xenstore ring
> - console ring
> - shared_info page
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
David
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next prev parent reply other threads:[~2015-06-08 12:16 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-08 12:06 [Patch V4 00/16] xen: support pv-domains larger than 512GB Juergen Gross
2015-06-08 12:06 ` [Patch V4 01/16] xen: sync with xen headers Juergen Gross
2015-06-08 12:06 ` [Patch V4 02/16] xen: save linear p2m list address in shared info structure Juergen Gross
2015-06-08 12:06 ` [Patch V4 03/16] xen: don't build mfn tree if tools don't need it Juergen Gross
2015-06-08 12:06 ` [Patch V4 04/16] xen: eliminate scalability issues from initial mapping setup Juergen Gross
2015-06-08 12:06 ` [Patch V4 05/16] xen: move static e820 map to global scope Juergen Gross
2015-06-08 12:06 ` [Patch V4 06/16] xen: split counting of extra memory pages from remapping Juergen Gross
2015-06-08 12:06 ` [Patch V4 07/16] xen: check memory area against e820 map Juergen Gross
2015-06-08 12:06 ` [Patch V4 08/16] xen: find unused contiguous memory area Juergen Gross
2015-06-08 12:06 ` [Patch V4 09/16] xen: check for kernel memory conflicting with memory layout Juergen Gross
2015-06-08 12:06 ` [Patch V4 10/16] xen: check pre-allocated page tables for conflict with memory map Juergen Gross
2015-06-08 12:06 ` [Patch V4 11/16] xen: check for initrd conflicting with e820 map Juergen Gross
2015-06-08 12:06 ` [Patch V4 12/16] mm: provide early_memremap_ro to establish read-only mapping Juergen Gross
2015-06-08 12:06 ` [Patch V4 13/16] xen: add explicit memblock_reserve() calls for special pages Juergen Gross
2015-06-08 12:16 ` David Vrabel [this message]
2015-06-08 12:06 ` [Patch V4 14/16] xen: move p2m list if conflicting with e820 map Juergen Gross
2015-06-11 11:03 ` [Xen-devel] " David Vrabel
2015-06-08 12:06 ` [Patch V4 15/16] xen: allow more than 512 GB of RAM for 64 bit pv-domains Juergen Gross
2015-06-08 12:06 ` [Patch V4 16/16] xen: remove no longer needed p2m.h Juergen Gross
2015-06-08 13:42 ` [Xen-devel] [Patch V4 00/16] xen: support pv-domains larger than 512GB David Vrabel
2015-06-08 13:45 ` Juergen Gross
2015-06-10 15:25 ` David Vrabel
2015-06-10 15:30 ` Juergen Gross
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