From: Paul Durrant <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 v4 2/3] x86 / ioreq: use a MEMF_no_refcount allocation for server pages...
Date: Wed, 18 Mar 2020 17:32:42 +0000 [thread overview]
Message-ID: <20200318173243.29183-3-paul@xen.org> (raw)
In-Reply-To: <20200318173243.29183-1-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 36fbbcf0ea..70e61788d7 100644
--- a/xen/arch/x86/hvm/ioreq.c
+++ b/xen/arch/x86/hvm/ioreq.c
@@ -376,7 +376,7 @@ 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:[~2020-03-18 17:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 17:32 [Xen-devel] [PATCH v4 0/3] make sure PGC_extra pages are dealt with properly Paul Durrant
2020-03-18 17:32 ` [Xen-devel] [PATCH v4 1/3] mm: keep PGC_extra pages on a separate list Paul Durrant
2020-03-24 14:34 ` Julien Grall
2020-03-18 17:32 ` Paul Durrant [this message]
2020-03-18 17:32 ` [Xen-devel] [PATCH v4 3/3] mm: add 'is_special_page' inline function Paul Durrant
2020-03-20 15:40 ` Jan Beulich
2020-03-24 14:34 ` Julien Grall
2020-03-24 9:39 ` [Xen-devel] [PATCH v4 0/3] make sure PGC_extra pages are dealt with properly Jan Beulich
2020-03-24 10:26 ` Paul Durrant
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