From: Olaf Hering <olaf@aepfle.de>
To: xen-devel@lists.xensource.com
Subject: [PATCH 09/12] xenpaging: prevent page-out of gfn 0x80
Date: Mon, 10 Jan 2011 17:43:54 +0100 [thread overview]
Message-ID: <20110110164348.662846757@aepfle.de> (raw)
In-Reply-To: 20110110164345.521919826@aepfle.de
[-- Attachment #1: xen-unstable.xenpaging.realmode_gfn_0x80.patch --]
[-- Type: text/plain, Size: 1169 bytes --]
Add a workaround for missing handling of paged-out pages during BIOS startup.
For some reason, only gfn 0x80 is affected.
(XEN) HVM3: HVM Loader
(XEN) traps.c:649:d3 Bad GMFN 80 (MFN ffffffffff) to MSR 40000000
(XEN) HVM3: Detected Xen v4.1
(XEN) HVM3: HVMLoader bug at util.c:604
(XEN) hvm.c:1085:d3 Triple fault on VCPU0 - invoking HVM system reset.
(XEN) HVM4: HVM Loader
(XEN) traps.c:649:d4 Bad GMFN 80 (MFN ffffffffff) to MSR 40000000
(XEN) io.c:194:d4 MMIO emulation failed @ 0018:9ffff: 00 6a 10 80 c4 82
(XEN) hvm.c:1085:d4 Triple fault on VCPU0 - invoking HVM system reset.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
Another part of the bugfix is the missing p2m_mem_paging_populate() call in
gfn_to_mfn()
tools/xenpaging/policy_default.c | 3 +++
1 file changed, 3 insertions(+)
--- xen-unstable.hg-4.1.22571.orig/tools/xenpaging/policy_default.c
+++ xen-unstable.hg-4.1.22571/tools/xenpaging/policy_default.c
@@ -76,6 +76,9 @@ int policy_init(xenpaging_t *paging)
/* Don't page out page 0 */
set_bit(0, bitmap);
+ /* this is the trap page, disabled for the time being */
+ set_bit(0x80, bitmap);
+
out:
return rc;
}
next prev parent reply other threads:[~2011-01-10 16:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-10 16:43 [PATCH 00/12] xenpaging changes for xen-unstable Olaf Hering
2011-01-10 16:43 ` [PATCH 01/12] xenpaging: remove domain_id and mfn from struct xenpaging_victim Olaf Hering
2011-01-10 16:43 ` [PATCH 02/12] xenpaging: specify policy mru_size at runtime Olaf Hering
2011-01-10 16:43 ` [PATCH 03/12] xenpaging: mkdir /var/lib/xen/xenpaging during make install Olaf Hering
2011-01-10 16:43 ` [PATCH 04/12] xenpaging: print page-in/page-out progress Olaf Hering
2011-01-10 16:43 ` [PATCH 05/12] xenpaging: make three functions static Olaf Hering
2011-01-11 18:36 ` Ian Jackson
2011-01-10 16:43 ` [PATCH 06/12] xenpaging: update machine_to_phys_mapping[] during page deallocation Olaf Hering
2011-01-11 10:37 ` Keir Fraser
2011-01-11 11:00 ` Olaf Hering
2011-01-11 11:29 ` Keir Fraser
2011-01-10 16:43 ` [PATCH 07/12] xenpaging: update machine_to_phys_mapping[] during page-in Olaf Hering
2011-01-10 16:43 ` [PATCH 08/12] xenpaging: drop paged pages in guest_remove_page Olaf Hering
2011-01-14 16:53 ` Olaf Hering
2011-01-10 16:43 ` Olaf Hering [this message]
2011-01-10 16:43 ` [PATCH 10/12] xenpaging: handle HVMCOPY_gfn_paged_out in copy_from/to_user Olaf Hering
2011-01-10 16:43 ` [PATCH 11/12] xenpaging: start xenpaging via config option Olaf Hering
2011-01-10 16:43 ` [PATCH 12/12] xenpaging: document missing live migration Olaf Hering
2011-01-11 17:20 ` [PATCH 00/12] xenpaging changes for xen-unstable Ian Jackson
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