From: Gordan Bobic <gordan@bobich.net>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xen.org
Subject: Re: HVM support for e820_host (Was: Bug: Limitation of <=2GB RAM in domU persists with 4.3.0)
Date: Thu, 05 Sep 2013 22:13:06 +0100 [thread overview]
Message-ID: <5228F3E2.8090905@bobich.net> (raw)
In-Reply-To: <20130905020442.GA2459@phenom.dumpdata.com>
Right, finally got around to trying this with the latest patch.
With e820_host=0 things work as before:
(XEN) HVM3: BIOS map:
(XEN) HVM3: f0000-fffff: Main BIOS
(XEN) HVM3: E820 table:
(XEN) HVM3: [00]: 00000000:00000000 - 00000000:0009e000: RAM
(XEN) HVM3: [01]: 00000000:0009e000 - 00000000:000a0000: RESERVED
(XEN) HVM3: HOLE: 00000000:000a0000 - 00000000:000e0000
(XEN) HVM3: [02]: 00000000:000e0000 - 00000000:00100000: RESERVED
(XEN) HVM3: [03]: 00000000:00100000 - 00000000:e0000000: RAM
(XEN) HVM3: HOLE: 00000000:e0000000 - 00000000:fc000000
(XEN) HVM3: [04]: 00000000:fc000000 - 00000001:00000000: RESERVED
(XEN) HVM3: [05]: 00000001:00000000 - 00000002:1f800000: RAM
I seem to be getting two different E820 table dumps with e820_host=1:
(XEN) HVM1: BIOS map:
(XEN) HVM1: f0000-fffff: Main BIOS
(XEN) HVM1: build_e820_table:91 got 8 op.nr_entries
(XEN) HVM1: E820 table:
(XEN) HVM1: [00]: 00000000:00000000 - 00000000:3f790000: RAM
(XEN) HVM1: [01]: 00000000:3f790000 - 00000000:3f79e000: ACPI
(XEN) HVM1: [02]: 00000000:3f79e000 - 00000000:3f7d0000: NVS
(XEN) HVM1: [03]: 00000000:3f7d0000 - 00000000:3f7e0000: RESERVED
(XEN) HVM1: HOLE: 00000000:3f7e0000 - 00000000:3f7e7000
(XEN) HVM1: [04]: 00000000:3f7e7000 - 00000000:40000000: RESERVED
(XEN) HVM1: HOLE: 00000000:40000000 - 00000000:fee00000
(XEN) HVM1: [05]: 00000000:fee00000 - 00000000:fee01000: RESERVED
(XEN) HVM1: HOLE: 00000000:fee01000 - 00000000:ffc00000
(XEN) HVM1: [06]: 00000000:ffc00000 - 00000001:00000000: RESERVED
(XEN) HVM1: [07]: 00000001:00000000 - 00000001:68870000: RAM
(XEN) HVM1: E820 table:
(XEN) HVM1: [00]: 00000000:00000000 - 00000000:0009e000: RAM
(XEN) HVM1: [01]: 00000000:0009e000 - 00000000:000a0000: RESERVED
(XEN) HVM1: HOLE: 00000000:000a0000 - 00000000:000e0000
(XEN) HVM1: [02]: 00000000:000e0000 - 00000000:00100000: RESERVED
(XEN) HVM1: [03]: 00000000:00100000 - 00000000:a7800000: RAM
(XEN) HVM1: HOLE: 00000000:a7800000 - 00000000:fc000000
(XEN) HVM1: [04]: 00000000:fc000000 - 00000001:00000000: RESERVED
(XEN) HVM1: Invoking ROMBIOS ...
I cannot quite figure out what is going on here - these tables can't
both be true.
Looking at the IOMEM on the host, the IOMEM begins at 0xa8000000 and
goes more or less contiguously up to 0xfec8b000.
Looking at dmesg on domU, the e820 map more or less matches the second
dump above.
So I guess that should work - the entire IOMEM area of the host is in
fact not mapped. But since I've passed 8GB of RAM to domU, shouldn't
there be another usable RAM area after 00000001:00000000 ?
Gordan
next prev parent reply other threads:[~2013-09-05 21:13 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-23 22:34 Bug: Limitation of <=2GB RAM in domU persists with 4.3.0 Gordan Bobic
2013-07-24 14:08 ` Konrad Rzeszutek Wilk
2013-07-24 14:17 ` Gordan Bobic
2013-07-24 16:06 ` Konrad Rzeszutek Wilk
2013-07-24 16:14 ` Gordan Bobic
2013-07-24 16:31 ` Konrad Rzeszutek Wilk
2013-07-24 17:26 ` Gordan Bobic
2013-07-24 22:15 ` Gordan Bobic
2013-07-25 19:18 ` George Dunlap
2013-07-25 21:48 ` Gordan Bobic
2013-07-25 22:23 ` Gordan Bobic
2013-07-26 0:21 ` Ian Campbell
2013-07-26 1:15 ` Andrew Bobulsky
2013-07-26 9:28 ` Gordan Bobic
2013-07-26 13:11 ` Gordan Bobic
2013-07-31 17:53 ` George Dunlap
2013-07-31 17:56 ` Andrew Cooper
2013-07-31 19:36 ` Gordan Bobic
2013-07-31 19:35 ` Gordan Bobic
2013-08-01 9:15 ` George Dunlap
2013-08-01 13:10 ` Fabio Fantoni
2013-08-02 14:43 ` George Dunlap
2013-07-28 10:26 ` Konrad Rzeszutek Wilk
2013-07-28 21:24 ` Gordan Bobic
2013-07-28 23:17 ` Konrad Rzeszutek Wilk
2013-07-28 23:30 ` Gordan Bobic
2013-07-29 9:53 ` Ian Campbell
2013-07-26 9:23 ` Gordan Bobic
2013-07-29 11:14 ` Ian Campbell
2013-07-29 18:04 ` Konrad Rzeszutek Wilk
2013-09-03 13:53 ` Gordan Bobic
2013-09-03 14:59 ` Konrad Rzeszutek Wilk
2013-09-03 19:47 ` HVM support for e820_host (Was: Bug: Limitation of <=2GB RAM in domU persists with 4.3.0) Gordan Bobic
2013-09-03 20:35 ` Gordan Bobic
2013-09-03 20:49 ` Gordan Bobic
2013-09-03 21:10 ` Konrad Rzeszutek Wilk
2013-09-03 21:24 ` Gordan Bobic
2013-09-03 21:30 ` Konrad Rzeszutek Wilk
2013-09-04 0:18 ` Gordan Bobic
2013-09-04 14:08 ` Konrad Rzeszutek Wilk
2013-09-04 14:23 ` Gordan Bobic
2013-09-04 18:00 ` Konrad Rzeszutek Wilk
2013-09-03 21:08 ` Konrad Rzeszutek Wilk
2013-09-04 9:21 ` Gordan Bobic
2013-09-04 11:01 ` Gordan Bobic
2013-09-04 13:11 ` Gordan Bobic
2013-09-04 20:18 ` Gordan Bobic
2013-09-05 2:04 ` Konrad Rzeszutek Wilk
2013-09-05 9:41 ` Gordan Bobic
2013-09-05 10:00 ` Gordan Bobic
2013-09-05 12:36 ` Konrad Rzeszutek Wilk
2013-09-05 10:26 ` Gordan Bobic
2013-09-05 12:38 ` Konrad Rzeszutek Wilk
2013-09-05 21:13 ` Gordan Bobic [this message]
2013-09-05 21:29 ` Gordan Bobic
2013-09-05 21:46 ` Gordan Bobic
2013-09-05 22:23 ` Konrad Rzeszutek Wilk
2013-09-05 22:42 ` Gordan Bobic
2013-09-06 13:09 ` Konrad Rzeszutek Wilk
2013-09-06 14:09 ` Gordan Bobic
2013-09-05 22:45 ` Gordan Bobic
2013-09-05 23:01 ` Konrad Rzeszutek Wilk
2013-09-06 12:23 ` Gordan Bobic
2013-09-06 13:20 ` Konrad Rzeszutek Wilk
2013-09-06 14:45 ` Gordan Bobic
2013-09-05 22:33 ` Gordan Bobic
2013-09-06 13:04 ` Konrad Rzeszutek Wilk
2013-09-06 13:34 ` Gordan Bobic
2013-09-06 14:32 ` Konrad Rzeszutek Wilk
2013-09-06 16:30 ` Gordan Bobic
2013-09-06 19:54 ` Gordan Bobic
2013-09-10 13:35 ` Konrad Rzeszutek Wilk
2013-09-10 15:04 ` Gordan Bobic
2013-07-25 21:26 ` Bug: Limitation of <=2GB RAM in domU persists with 4.3.0 Gordan Bobic
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