Messages in this thread | | | Date | Wed, 26 Apr 2006 10:36:54 -0700 | From | Martin Bligh <> | Subject | Re: [kernel-reviewers] a small code review (2414483) Automated g4 rollback of changelist 2396062. |
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Tim Hockin wrote: > On Wed, Apr 26, 2006 at 10:12:14AM -0700, Ken Harrenstien wrote: > >>That doesn't work because IIRC it only reports the amount of memory >>the kernel has been told (eg via "mem=") to manage in a certain sense, >>not how much is actually physically available. >> >>The I2 netboot kernel would really REALLY like some exported /proc >>values that accurately report physical memory (if nothing else, the >>number of DIMMs and their sizes). It has to figure this out in order >>to install the proper kernel with proper LILO command-line args. > > > The kernel can't really know how much memory is in the system without > getting chipset-specific. > > MTRR is a good way to hazard a guess, and will probably be right, but as > you indicated, BIOS vendors have historically been REALLY bad about > MTRRs. Better now, but bad a few years ago. > > SMBIOS (on our boards) *does* accurately report the number of DIMMS and > their sizes (and more!). But it only works on Google BIOS.
cc: linux-kernel bcc: kernel-reviewers
Are you saying our e820 maps and srat tables are wrong? that's a little worrying ...
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