From: Penny Zheng <Penny.Zheng@arm.com>
To: Julien Grall <julien@xen.org>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
"sstabellini@kernel.org" <sstabellini@kernel.org>,
"jbeulich@suse.com" <jbeulich@suse.com>
Cc: Bertrand Marquis <Bertrand.Marquis@arm.com>, Wei Chen <Wei.Chen@arm.com>
Subject: RE: [PATCH 2/9] xen/arm: introduce PGC_reserved
Date: Mon, 5 Jul 2021 03:09:31 +0000 [thread overview]
Message-ID: <VE1PR08MB52159420DF3B478AD65AB5B5F71C9@VE1PR08MB5215.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <1f1c1567-1a53-3b6a-2868-b7673d9180b3@xen.org>
Hi Julien
Sorry for so long to respond, just back from a long holiday. 😉
> -----Original Message-----
> From: Julien Grall <julien@xen.org>
> Sent: Thursday, July 1, 2021 1:44 AM
> To: Penny Zheng <Penny.Zheng@arm.com>; xen-devel@lists.xenproject.org;
> sstabellini@kernel.org; jbeulich@suse.com
> Cc: Bertrand Marquis <Bertrand.Marquis@arm.com>; Wei Chen
> <Wei.Chen@arm.com>
> Subject: Re: [PATCH 2/9] xen/arm: introduce PGC_reserved
>
> 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,
Sure, I'll re-organize this commit.
>
> >
> > 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
Cheers
--
Penny Zheng
next prev parent reply other threads:[~2021-07-05 3:10 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
2021-07-05 3:09 ` Penny Zheng [this message]
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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