From: Julien Grall <julien@xen.org>
To: Penny Zheng <penny.zheng@arm.com>,
xen-devel@lists.xenproject.org, sstabellini@kernel.org,
jbeulich@suse.com
Cc: Bertrand.Marquis@arm.com, Wei.Chen@arm.com
Subject: Re: [PATCH 2/9] xen/arm: introduce PGC_reserved
Date: Wed, 30 Jun 2021 18:44:16 +0100 [thread overview]
Message-ID: <1f1c1567-1a53-3b6a-2868-b7673d9180b3@xen.org> (raw)
In-Reply-To: <20210607024318.3988467-3-penny.zheng@arm.com>
Hi Penny,
On 07/06/2021 03:43, Penny Zheng wrote:
> In order to differentiate pages of static memory, from those allocated from
> heap, this patch introduces a new page flag PGC_reserved to tell.
I would prefer if this patch is folded in the patch first using it. This
will be easier to understand how this flag will be used.
Cheers,
>
> Signed-off-by: Penny Zheng <penny.zheng@arm.com>
> ---
> changes v2:
> - remove unused reserved field in struct page_info
> - remove unused helper page_get_reserved_owner and page_set_reserved_owner
> ---
> xen/include/asm-arm/mm.h | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
> index 0b7de3102e..7034fae1b6 100644
> --- a/xen/include/asm-arm/mm.h
> +++ b/xen/include/asm-arm/mm.h
> @@ -108,6 +108,9 @@ struct page_info
> /* Page is Xen heap? */
> #define _PGC_xen_heap PG_shift(2)
> #define PGC_xen_heap PG_mask(1, 2)
> + /* Page is reserved */
> +#define _PGC_reserved PG_shift(3)
> +#define PGC_reserved PG_mask(1, 3)
> /* ... */
> /* Page is broken? */
> #define _PGC_broken PG_shift(7)
>
--
Julien Grall
next prev parent reply other threads:[~2021-06-30 17:44 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-07 2:43 [PATCH V2 0/9] Domain on Static Allocation Penny Zheng
2021-06-07 2:43 ` [PATCH 1/9] xen/arm: introduce domain " Penny Zheng
2021-06-07 2:43 ` [PATCH 2/9] xen/arm: introduce PGC_reserved Penny Zheng
2021-06-30 17:44 ` Julien Grall [this message]
2021-07-05 3:09 ` Penny Zheng
2021-06-07 2:43 ` [PATCH 3/9] xen/arm: introduce CONFIG_STATIC_ALLOCATION Penny Zheng
2021-06-07 6:17 ` Jan Beulich
2021-06-30 17:45 ` Julien Grall
2021-07-05 3:16 ` Penny Zheng
2021-06-07 2:43 ` [PATCH 4/9] xen/arm: static memory initialization Penny Zheng
2021-06-10 9:35 ` Jan Beulich
2021-06-30 17:46 ` Julien Grall
2021-07-05 5:22 ` Penny Zheng
2021-07-05 7:14 ` Penny Zheng
2021-07-05 7:50 ` Jan Beulich
2021-07-05 9:19 ` Penny Zheng
2021-07-05 7:48 ` Jan Beulich
2021-06-30 18:09 ` Julien Grall
2021-07-05 7:28 ` Penny Zheng
2021-07-06 9:09 ` Julien Grall
2021-07-06 9:20 ` Penny Zheng
2021-07-06 9:26 ` Julien Grall
2021-06-07 2:43 ` [PATCH 5/9] xen: introduce assign_pages_nr Penny Zheng
2021-06-10 9:49 ` Jan Beulich
2021-06-30 18:29 ` Julien Grall
2021-07-01 8:26 ` Jan Beulich
2021-07-01 9:24 ` Julien Grall
2021-07-01 10:13 ` Jan Beulich
2021-06-07 2:43 ` [PATCH 6/9] xen/arm: introduce alloc_staticmem_pages and alloc_domstatic_pages Penny Zheng
2021-06-10 10:23 ` Jan Beulich
2021-07-06 5:58 ` Penny Zheng
2021-07-06 6:53 ` Jan Beulich
2021-07-06 9:39 ` Julien Grall
2021-07-06 9:59 ` Jan Beulich
2021-07-06 10:31 ` Julien Grall
2021-07-08 9:09 ` Penny Zheng
2021-07-08 10:06 ` Jan Beulich
2021-07-08 11:07 ` Penny Zheng
2021-06-07 2:43 ` [PATCH 7/9] xen/arm: take care of concurrency on static memory allocation Penny Zheng
2021-06-10 10:53 ` Jan Beulich
2021-06-07 2:43 ` [PATCH 8/9] xen/arm: check `xen,static-mem` property during domain construction Penny Zheng
2021-07-03 13:26 ` Julien Grall
2021-07-06 6:31 ` Penny Zheng
2021-07-06 6:57 ` Jan Beulich
2021-07-06 7:35 ` Penny Zheng
2021-07-06 9:22 ` Julien Grall
2021-06-07 2:43 ` [PATCH 9/9] xen/arm: introduce allocate_static_memory Penny Zheng
2021-07-03 14:18 ` Julien Grall
2021-07-06 7:30 ` Penny Zheng
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