From: <paul@xen.org>
To: <xen-devel@lists.xenproject.org>
Cc: "Wei Liu" <wl@xen.org>, "Paul Durrant" <paul@xen.org>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Paul Durrant" <pdurrant@amazon.com>,
"Jan Beulich" <jbeulich@suse.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [Xen-devel] [PATCH v5 4/6] x86 / ioreq: use a MEMF_no_refcount allocation for server pages...
Date: Mon, 9 Mar 2020 10:23:02 +0000 [thread overview]
Message-ID: <20200309102304.1251-5-paul@xen.org> (raw)
In-Reply-To: <20200309102304.1251-1-paul@xen.org>
From: Paul Durrant <pdurrant@amazon.com>
... now that it is safe to assign them.
This avoids relying on libxl (or whatever toolstack is in use) setting
max_pages up with sufficient 'slop' to allow all necessary ioreq server
pages to be allocated.
Signed-off-by: Paul Durrant <paul@xen.org>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Wei Liu <wl@xen.org>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>
v2:
- New in v2
---
xen/arch/x86/hvm/ioreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/ioreq.c b/xen/arch/x86/hvm/ioreq.c
index f8a5c81546..648ef9137f 100644
--- a/xen/arch/x86/hvm/ioreq.c
+++ b/xen/arch/x86/hvm/ioreq.c
@@ -375,7 +375,7 @@ static int hvm_alloc_ioreq_mfn(struct hvm_ioreq_server *s, bool buf)
return 0;
}
- page = alloc_domheap_page(s->target, 0);
+ page = alloc_domheap_page(s->target, MEMF_no_refcount);
if ( !page )
return -ENOMEM;
--
2.20.1
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next prev parent reply other threads:[~2020-03-09 10:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 10:22 [Xen-devel] [PATCH v5 0/6] remove one more shared xenheap page: shared_info paul
2020-03-09 10:22 ` [Xen-devel] [PATCH v5 1/6] domain: introduce alloc/free_shared_info() helpers paul
2020-03-09 10:23 ` [Xen-devel] [PATCH v5 2/6] x86 / p2m: replace page_list check in p2m_alloc_table paul
2020-03-09 10:23 ` [Xen-devel] [PATCH v5 3/6] x86 / pv: do not treat PGC_extra pages as RAM paul
2020-03-09 13:04 ` Jan Beulich
2020-03-10 13:32 ` Paul Durrant
2020-03-10 14:58 ` Jan Beulich
2020-03-10 15:05 ` Paul Durrant
2020-03-10 15:12 ` Jan Beulich
2020-03-10 15:16 ` Paul Durrant
2020-03-10 15:33 ` Jan Beulich
2020-03-10 15:54 ` Paul Durrant
2020-03-09 10:23 ` paul [this message]
2020-03-09 10:23 ` [Xen-devel] [PATCH v5 5/6] mm: add 'is_special_page' inline function paul
2020-03-09 13:28 ` Jan Beulich
2020-03-10 16:32 ` Paul Durrant
2020-03-09 10:23 ` [Xen-devel] [PATCH v5 6/6] domain: use PGC_extra domheap page for shared_info paul
2020-03-09 15:56 ` Jan Beulich
2020-03-10 17:33 ` Paul Durrant
2020-03-11 9:16 ` Jan Beulich
[not found] ` <004501d5f7b9$b00e1120$102a3360$@xen.org>
2020-03-12 8:34 ` Jan Beulich
2020-03-12 9:09 ` [Xen-devel] [EXTERNAL][PATCH " Paul Durrant
2020-03-12 9:26 ` Jan Beulich
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