Message ID | 1488930021-20227-1-git-send-email-mpe@ellerman.id.au (mailing list archive) |
---|---|
State | Accepted |
Headers | show |
On Tue, 2017-03-07 at 23:40:21 UTC, Michael Ellerman wrote: > Recent toolchains force the TOC to be 256 byte aligned. We need to > enforce this alignment in the zImage linker script, otherwise pointers > to our TOC variables (__toc_start) could be incorrect. If the actual > start of the TOC and __toc_start don't have the same value we crash > early in the zImage wrapper. > > Cc: stable@vger.kernel.org > Suggested-by: Alan Modra <amodra@gmail.com> > Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Applied to powerpc fixes. https://git.kernel.org/powerpc/c/97ee351b50a49717543533cfb85b4b cheers
diff --git a/arch/powerpc/boot/zImage.lds.S b/arch/powerpc/boot/zImage.lds.S index 861e72109df2..f080abfc2f83 100644 --- a/arch/powerpc/boot/zImage.lds.S +++ b/arch/powerpc/boot/zImage.lds.S @@ -68,6 +68,7 @@ SECTIONS } #ifdef CONFIG_PPC64_BOOT_WRAPPER + . = ALIGN(256); .got : { __toc_start = .;
Recent toolchains force the TOC to be 256 byte aligned. We need to enforce this alignment in the zImage linker script, otherwise pointers to our TOC variables (__toc_start) could be incorrect. If the actual start of the TOC and __toc_start don't have the same value we crash early in the zImage wrapper. Cc: stable@vger.kernel.org Suggested-by: Alan Modra <amodra@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/boot/zImage.lds.S | 1 + 1 file changed, 1 insertion(+)