Re: Testing RAM from userspace / question about memmap= arguments

2007-12-22 Thread Matthew Bloch
David Newall wrote: Pavel Machek wrote: On Sat 2007-12-22 13:42:47, Richard D wrote: Cant you, modify bootmem allocator to test with memtest patterns and then use kexec (as Pavel suggested) to test the one where kernel was sitting earlier? I do not think you need to modify anything i

Re: Testing RAM from userspace / question about memmap= arguments

2007-12-20 Thread Matthew Bloch
Jon Masters wrote: > On Tue, 2007-12-18 at 17:06 +0000, Matthew Bloch wrote: > >> I can see a few potential problems, but since my understanding of the >> low-level memory mapping is muddy at best, I won't speculate; I'd just >> appreciate any more expert views o

Testing RAM from userspace / question about memmap= arguments

2007-12-18 Thread Matthew Bloch
Hi - I'm trying to come up with a way of thoroughly testing every byte of RAM from within Linux on amd64 (so that it can be automated better than using memtest86+), and came up with an idea which I'm not sure is supported or practical. The obvious problem with testing memory from user space is tha