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Date: Thu, 4 Sep 2008 10:32:19 +1000 From: Paul Mackerras <paulus@...ba.org> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: linuxppc-dev@...abs.org, akpm@...ux-foundation.org, linux-kernel@...r.kernel.org Subject: [git pull] Please pull powerpc.git merge branch Linus, Please pull from the 'merge' branch of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git merge to get 6 commits that fix various regressions, build problems and serious bugs on powerpc. I have included the full commit messages below. Thanks, Paul. arch/powerpc/Makefile | 5 +++++ arch/powerpc/include/asm/pgtable-ppc64.h | 6 ++---- arch/powerpc/kernel/Makefile | 7 ++++--- arch/powerpc/kernel/align.c | 2 +- arch/powerpc/kernel/idle_6xx.S | 2 +- arch/powerpc/kernel/idle_e500.S | 3 ++- arch/powerpc/kernel/vmlinux.lds.S | 7 ++++--- arch/powerpc/mm/hash_utils_64.c | 18 +++++++++++------- arch/powerpc/platforms/powermac/Makefile | 2 +- lib/Kconfig.debug | 6 +++--- 10 files changed, 34 insertions(+), 24 deletions(-) commit 7888bc2b4778fda267a6e6422c4497dba865a47a Author: Kumar Gala <galak@...nel.crashing.org> Date: Tue Aug 26 12:08:56 2008 +1000 powerpc: Fix for getting CPU number in power_save_ppc32_restore() The calculation to get TI_CPU based off of SPRG3 was just plain wrong, meaning that we were getting garbage for the CPU number on 6xx/G3/G4 based SMP boxes in this code. Just offset off the stack pointer (to get to thread_info) like all the other references to TI_CPU do. This was pointed out by Chen Gong <G.Chen@...escale.com> [paulus@...ba.org - use rlwinm r12,r11,... instead of rlwinm r12,r1,...; tophys()] Signed-off-by: Kumar Gala <galak@...nel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org> Signed-off-by: Paul Mackerras <paulus@...ba.org> commit 94ee815c05c9387931e549d83312d30009ed86e9 Author: Benjamin Herrenschmidt <benh@...nel.crashing.org> Date: Wed Sep 3 13:12:05 2008 +1000 powerpc: Fix build error with 64K pages and !hugetlbfs HAVE_ARCH_UNMAPPED_AREA and HAVE_ARCH_UNMAPPED_AREA_TOPDOWN must be defined whenever CONFIG_PPC_MM_SLICES is enabled, not just when CONFIG_HUGETLB_PAGE is. They used to be always defined together but this is no longer the case since 3a8247cc2c856930f34eafce33f6a039227ee175 ("powerpc: Only demote individual slices rather than whole process"). Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org> Signed-off-by: Paul Mackerras <paulus@...ba.org> commit 7563dc64585324f443f5ac107eb6d89ee813a2d2 Author: Tony Breeds <tony@...eyournoodle.com> Date: Tue Sep 2 16:50:38 2008 +1000 powerpc: Work around gcc's -fno-omit-frame-pointer bug This bug is causing random crashes (http://bugzilla.kernel.org/show_bug.cgi?id=11414). -fno-omit-frame-pointer is only needed on powerpc when -pg is also supplied, and there is a gcc bug that causes incorrect code generation on 32-bit powerpc when -fno-omit-frame-pointer is used---it uses stack locations below the stack pointer, which is not allowed by the ABI because those locations can and sometimes do get corrupted by an interrupt. This ensures that CONFIG_FRAME_POINTER is only selected by ftrace. When CONFIG_FTRACE is enabled we also pass -mno-sched-epilog to work around the gcc codegen bug. Patch based on work by: Andreas Schwab <schwab@...e.de> Segher Boessenkool <segher@...nel.crashing.org> Signed-off-by: Tony Breeds <tony@...eyournoodle.com> Signed-off-by: Paul Mackerras <paulus@...ba.org> commit 303996dace16894710a5291327eeb79afdb8ed12 Author: Stephen Rothwell <sfr@...b.auug.org.au> Date: Tue Sep 2 15:04:09 2008 +1000 powerpc: Make sure _etext is after all kernel text This makes core_kernel_text() (and therefore kernel_text_address()) return the correct result. Currently all the __devinit routines (at least) will not be considered to be kernel text. This is just a quick fix for 2.6.27 - hopefully we will be able to fix this better in 2.6.28. Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au> Signed-off-by: Paul Mackerras <paulus@...ba.org> commit 9e88ba4e45ecad2425c4cc4e0861a26f4e36c6da Author: Paul Mackerras <paulus@...ba.org> Date: Sat Aug 30 11:26:27 2008 +1000 powerpc: Only make kernel text pages of linear mapping executable Commit bc033b63bbfeb6c4b4eb0a1d083c650e4a0d2af8 ("powerpc/mm: Fix attribute confusion with htab_bolt_mapping()") moved the check for whether we should make pages of the linear mapping executable from htab_bolt_mapping into its callers, including htab_initialize. A side-effect of this is that the decision is now made once for each contiguous section in the LMB array rather than for each page individually. This can often mean that the whole of the linear mapping ends up being executable. This reverts to the previous behaviour, where individual pages are checked for being part of the kernel text or not, by moving the check back down into htab_bolt_mapping. Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org> Signed-off-by: Paul Mackerras <paulus@...ba.org> commit 78fbc824ed8225edd80cdc57771d5ca4f7aae95e Author: Michael Neuling <mikey@...ling.org> Date: Thu Aug 28 14:57:39 2008 +1000 powerpc: Fix uninitialised variable in VSX alignment code This fixes an uninitialised variable in the VSX alignment code. It can cause warnings from GCC (noticed with gcc-4.1.1). Gcc is actually correct in this instance, and this bug could cause the alignment interrupt handler to send a SIGSEGV to the process on a legitimate access. Signed-off-by: Michael Neuling <mikey@...ling.org> Signed-off-by: Paul Mackerras <paulus@...ba.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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