Messages in this thread | | | Date | Thu, 10 Jan 2008 19:13:29 -0800 | From | "Yinghai Lu" <> | Subject | Re: kexec fail |
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On Jan 8, 2008 2:36 PM, Yinghai Lu <yhlu.kernel@gmail.com> wrote: > > On Jan 8, 2008 12:15 AM, Yinghai Lu <yhlu.kernel@gmail.com> wrote: > > > > On Jan 7, 2008 9:50 PM, Christoph Lameter <clameter@sgi.com> wrote: > > > On Mon, 7 Jan 2008, Yinghai Lu wrote: > > > > > > > try to kexec 2.6.23 from RHEL 5.1, will get > > > > Your BIOS doesn't leave a aperture memory hole > > > > Please enable the IOMMU option in the BIOS setup > > > > This costs you 64 MB of RAM ======> reboot > > > > > > > > but 2.6.24-rc7 kexec 2.6.24-rc7 is ok. > > > > > > BUG in 2.6.23 kexec? > > > > > > > > > > yeah, that is more worse. it will cause reboot. > > > > change mem model from CONFIG_SPARSEMEM_MANUL to > CONFIG_DISCONTIGMEM_MANUAL it will work.
find the cause. because two kernel has different addr for GART aper. and second kernel will put vmemmap in the GART set by first kernel.
http://lkml.org/lkml/2008/1/10/517
YH
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