On 07/10/2013 02:34 PM, Enrico Scholz wrote:
Enrico Scholz
<enrico.scholz-wttK6gPy29v+Hn7q9Vec/7nah6klm...@public.gmane.org>
writes:
is it expected that recent gcc 4.8[1] compiles the kernel correctly?
Kernels for ARMv5 platforms (PXA168 -> 3.4.52, MX28 -> 3.8.13) fail here
100% at early boot with
Applying two upstream kernel commits
455bd4c430b0c0a361f38e8658a0d6cb469942b5 (ARM: 7668/1: fix
memset-related crashes caused by recent GCC (4.7.2) optimizations) and
418df63adac56841ef6b0f1fcf435bc64d4ed177 (ARM: 7670/1: fix the memset
fix) seem to fix the problem for me.
I encountered a compilation problem for MIPS kernels (version 3.3 and
below) with the new GCC compiler:
arch/mips/mm/page.c:89:6: error: 'clear_page' alias in between
function and variable is not supported
void clear_page(void *page) __attribute__((alias("clear_page_array")));
^
arch/mips/mm/page.c:84:12: error: 'clear_page_array' aliased declaration
[-Werror]
static u32 clear_page_array[0x120 / 4];
^
arch/mips/mm/page.c:108:6: error: 'copy_page' alias in between function
and variable is not supported
void copy_page(void *to, void *from)
__attribute__((alias("copy_page_array")));
^
arch/mips/mm/page.c:102:12: error: 'copy_page_array' aliased declaration
[-Werror]
static u32 copy_page_array[0x540 / 4];
So I'll probably have to go and look for backports to apply here. Anyone
happen to come across this one already?
(Looking in the git history for that file suggests applying
c022630633624a75b3b58f43dd3c6cc896a56cff from upstream)
A 3.8 kernel is running just fine with gcc 4.8.
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