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| author | David Daney <david.daney@cavium.com> | 2012-07-19 09:11:14 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2012-07-19 11:23:43 +0200 |
| commit | 7b1c0d26a8e272787f0f9fcc5f3e8531df3b3409 (patch) | |
| tree | 0aef79b4026b5bacbe8e621013daccce1b82d37a | |
| parent | MIPS: Malta: Change start address to avoid conflicts. (diff) | |
| download | linux-7b1c0d26a8e272787f0f9fcc5f3e8531df3b3409.tar.xz linux-7b1c0d26a8e272787f0f9fcc5f3e8531df3b3409.zip | |
MIPS: Properly align the .data..init_task section.
Improper alignment can lead to unbootable systems and/or random
crashes.
[ralf@linux-mips.org: This is a lond standing bug since
6eb10bc9e2deab06630261cd05c4cb1e9a60e980 (kernel.org) rsp.
c422a10917f75fd19fa7fe070aaaa23e384dae6f (lmo) [MIPS: Clean up linker script
using new linker script macros.] so dates back to 2.6.32.]
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/3881/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/include/asm/thread_info.h | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/vmlinux.lds.S | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h index e2eca7d10598..ca97e0ecb64b 100644 --- a/arch/mips/include/asm/thread_info.h +++ b/arch/mips/include/asm/thread_info.h @@ -60,6 +60,8 @@ struct thread_info { register struct thread_info *__current_thread_info __asm__("$28"); #define current_thread_info() __current_thread_info +#endif /* !__ASSEMBLY__ */ + /* thread information allocation */ #if defined(CONFIG_PAGE_SIZE_4KB) && defined(CONFIG_32BIT) #define THREAD_SIZE_ORDER (1) @@ -85,8 +87,6 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define STACK_WARN (THREAD_SIZE / 8) -#endif /* !__ASSEMBLY__ */ - #define PREEMPT_ACTIVE 0x10000000 /* diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 924da5eb7031..df243a64f430 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -1,5 +1,6 @@ #include <asm/asm-offsets.h> #include <asm/page.h> +#include <asm/thread_info.h> #include <asm-generic/vmlinux.lds.h> #undef mips @@ -72,7 +73,7 @@ SECTIONS .data : { /* Data */ . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */ - INIT_TASK_DATA(PAGE_SIZE) + INIT_TASK_DATA(THREAD_SIZE) NOSAVE_DATA CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) |