Messages in this thread | | | Date | Sun, 15 Mar 2009 22:28:54 +0100 | From | Ingo Molnar <> | Subject | Re: [crash] Re: Latest brk patchset |
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* Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> Ingo Molnar wrote: >> * Jeremy Fitzhardinge <jeremy@goop.org> wrote: >> >> >>> H. Peter Anvin wrote: >>> >>>> Well, the semantics are different; the .bss section is zeroed while the >>>> brk isn't, and the brk symbols don't necessarily point to the data >>>> associated with those particular symbols, unlike (of course) the bss. >>>> >>>> It's not a big issue, obviously, it just seems cleaner to me that way. >>>> >>> OK, I just added a couple of changes to: >>> >>> * make the brk reservation symbols have the form ".brk.NAME" to make >>> them inaccessible from C, and to make them look obviously >>> different from normal symbols (more like sections, since it is >>> their size that's more important than their address) >>> * Put all the brk stuff in a .brk section >>> * Mention alignment in the comment for the slop space >>> >>> J >>> >>> The following changes since commit 1e08816af0bc345995c3f26ce4eaba1171ffb531: >>> Ingo Molnar (1): >>> Merge branch 'linus' >>> >>> are available in the git repository at: >>> >>> git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git push/x86/brk >>> >> >> the previous kit in tip:x86/setup-memory is causing crashes. One of >> them is: >> >> init_memory_mapping: 0000000000000000-00000000377fe000 >> 0000000000 - 00377fe000 page 4k >> Kernel panic - not syncing: Cannot find space >> for the kernel page tables Pid: 0, comm: swapper Not tainted >> 2.6.29-rc8-tip-02516-g83219b0-dirty #35476 Call Trace: >> >> [<c0128b7b>] panic+0x4b/0x100 >> [<c074a989>] init_memory_mapping+0x429/0x430 >> [<c0cde790>] setup_arch+0x430/0x890 >> [<c0148f4e>] ? >> lockdep_init_map+0x2e/0x150 >> [<c036f392>] ? __spin_lock_init+0x32/0x60 >> [<c01298d0>] ? printk+0x20/0x30 >> [<c0cdc966>] start_kernel+0xc6/0x330 >> [<c0cdc321>] >> i386_start_kernel+0x41/0x50 >> >> full crashlog below, config attached. >> > > What branch is this? I'm trying to build with your config > with current tip/master w/ tip/x86/setup-memory merged into > it, but "make ARCH=i386 oldconfig" is asking me about > CONFIG_SMP, which makes me think the config file is > incomplete.
just accept the defaults in 'make oldconfig' and you'll get the right config.
Ingo
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