On Wed, 2006-09-27 at 15:34 -0700, Nishanth Aravamudan wrote: > On 27.09.2006 [17:07:18 -0500], Adam Litke wrote: > > I am proposing the following changes to the powerpc linker scripts (both > > B and BDT). This change will align the end of the BSS to a 256M > > boundary. Due to the restrictions on powerpc allow only one page size > > per 256M chunk of virtual address space, it is possible to have spurious > > remapping and/or malloc failures with some applications. We're seeing > > it in the case where an application requests segment remapping, but the > > loader mapped a library into the same 256 segment as the BSS. In this > > case we can unmap the original BSS, but are not able to create it in > > large pages due to the library in the way. Aligning the bss in this way > > should not cause any harm. It may cause us to consume a few more huge > > pages in some cases. This side effect is fixable in the future. > > > > Does anyone see any problems with doing this? > > > > Signed-Off-By: Adam Litke <[EMAIL PROTECTED]> > > > > diff --git a/ldscripts/elf32ppclinux.xB b/ldscripts/elf32ppclinux.xB > > index 8d5cf4d..e45e0d7 100644 > > --- a/ldscripts/elf32ppclinux.xB > > +++ b/ldscripts/elf32ppclinux.xB > > @@ -205,10 +205,8 @@ SECTIONS > > .bss section disappears because there are no input sections. > > FIXME: Why do we need it? When there is no .bss section, we don't > > pad the .data section. */ > > - . = ALIGN(. != 0 ? 32 / 8 : 1); > > + . = ALIGN(256*1204*1024); > > Should that be 1024 there in the middle? Perhaps also add in a comment, > to indicate why the alignment is necessary.
Doh. Looks like I can't be asked to reliably repeat a simple operation 4 times. I knew I should've written a sed script :) -- Adam Litke - (agl at us.ibm.com) IBM Linux Technology Center ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Libhugetlbfs-devel mailing list Libhugetlbfs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel
