From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: MaoXiaoyun <tinnycloud@hotmail.com>
Cc: jeremy@goop.org, xen devel <xen-devel@lists.xensource.com>
Subject: Re: RE:2Gb Memory lost in 2.6.32.36 - 50G memory, maxmem=50G, 2G used for pagetable, clamping (max:5G) is not helping.
Date: Thu, 19 May 2011 12:16:56 -0400 [thread overview]
Message-ID: <20110519161656.GA12889@dumpdata.com> (raw)
In-Reply-To: <BLU157-w27A65EFF61E3E94BD5544EDA8E0@phx.gbl>
> > What happens if you provide dom0_mem=max:5G to clamp on the size?
> >
>
> Seems nothing different(what is clamp means? ^_^ )
http://en.wikipedia.org/wiki/Clamp_(tool)
.. snip..
> Xen: 0000000100000000 - 0000000c6ff09000 (usable)
> DMI present.
> AMI BIOS detected: BIOS may corrupt low RAM, working around it.
> last_pfn = 0xc6ff09 max_arch_pfn = 0x400000000
.. snip..
> xen_commandline : msi=1 iommu=off x2apic=off console=com1,vga com1=115200,8n1 noreboot dom0_mem=max:5G dom0_max_vcpus=4 dom0_vcpus_pin cpuidle=0 cpufreq=none xsave=0
OK, I would have expected your last entry in the E820 to be truncated
to 15fe00000, but it is not with the max:5G parameter. Looks like
you found a bug - but I am not sure if it is the Xen hypervisor or
the E820 parsing code in Linux. Fortunatly for you, I just got my hands on 32G
machine so I can work on this. Can you remind me in a week if I you do
not see any patches from me?
next prev parent reply other threads:[~2011-05-19 16:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <SNT0-MC4-F34MpzkUY6002755b8@snt0-mc4-f34.Snt0.hotmail.com>
2011-05-18 14:58 ` Memory missing in 2.6.32.36 MaoXiaoyun
2011-05-19 3:58 ` MaoXiaoyun
2011-05-19 5:30 ` MaoXiaoyun
2011-05-19 13:17 ` RE:2Gb Memory lost " MaoXiaoyun
2011-05-19 14:42 ` RE:2Gb Memory lost in 2.6.32.36 - 50G memory, maxmem=50G, 2G used for pagetable Konrad Rzeszutek Wilk
2011-05-19 15:31 ` MaoXiaoyun
2011-05-19 16:16 ` Konrad Rzeszutek Wilk [this message]
2011-05-25 9:08 ` RE:2Gb Memory lost in 2.6.32.36 - 50G memory, maxmem=50G, 2G used for pagetable, clamping (max:5G) is not helping MaoXiaoyun
2011-05-31 8:33 ` MaoXiaoyun
2011-05-31 14:44 ` Konrad Rzeszutek Wilk
2011-05-19 14:44 ` 2Gb Memory lost in 2.6.32.36 Konrad Rzeszutek Wilk
2011-05-19 15:32 ` MaoXiaoyun
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