From: Paul Durrant <pdurrant@amazon.com>
To: <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Paul Durrant" <pdurrant@amazon.com>, "Wei Liu" <wl@xen.org>,
"Jan Beulich" <jbeulich@suse.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [Xen-devel] [PATCH 4/6] x86 / ioreq: use a MEMF_no_refcount allocation for server pages...
Date: Fri, 28 Feb 2020 13:27:47 +0000 [thread overview]
Message-ID: <20200228132749.2929-5-pdurrant@amazon.com> (raw)
In-Reply-To: <20200228132749.2929-1-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 <pdurrant@amazon.com>
---
Cc: Paul Durrant <pdurrant@amazon.com>
Cc: 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:[~2020-02-28 13:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-28 13:27 [Xen-devel] [PATCH v2 0/6] remove one more shared xenheap page: shared_info Paul Durrant
2020-02-28 13:27 ` [Xen-devel] [PATCH 1/6] domain: introduce alloc/free_shared_info() helpers Paul Durrant
2020-02-28 13:27 ` [Xen-devel] [PATCH 2/6] x86 / p2m: remove page_list check in p2m_alloc_table Paul Durrant
2020-02-28 13:27 ` [Xen-devel] [PATCH 3/6] x86 / pv: do not treat PGC_extra pages as RAM when constructing dom0 Paul Durrant
2020-02-28 13:27 ` Paul Durrant [this message]
2020-02-28 13:27 ` [Xen-devel] [PATCH 5/6] mm: add 'is_special_page' macro Paul Durrant
2020-02-28 19:32 ` Tamas K Lengyel
2020-02-29 10:11 ` Durrant, Paul
2020-02-28 13:27 ` [Xen-devel] [PATCH 6/6] domain: use PGC_extra domheap page for shared_info Paul Durrant
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