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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-01-31 10:08:48 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-23 22:31:39 +1100 |
| commit | 92ab45c5f2db0caa68243be8cfa5e390a1de8c3a (patch) | |
| tree | a5817b22e8d438a8f4ee4c761f155d732a450a71 /arch/powerpc/include/asm/task_size_32.h | |
| parent | powerpc/irq: use memblock functions returning virtual address (diff) | |
| download | linux-dev-92ab45c5f2db0caa68243be8cfa5e390a1de8c3a.tar.xz linux-dev-92ab45c5f2db0caa68243be8cfa5e390a1de8c3a.zip | |
powerpc: Avoid circular header inclusion in mmu-hash.h
When activating CONFIG_THREAD_INFO_IN_TASK, linux/sched.h includes
asm/current.h. This generates a circular dependency. To avoid that,
asm/processor.h shall not be included in mmu-hash.h.
In order to do that, this patch moves into a new header called
asm/task_size_64/32.h all the TASK_SIZE related constants, which can
then be included in mmu-hash.h directly.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Split out all the TASK_SIZE constants not just 64-bit ones]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/task_size_32.h')
| -rw-r--r-- | arch/powerpc/include/asm/task_size_32.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/task_size_32.h b/arch/powerpc/include/asm/task_size_32.h new file mode 100644 index 000000000000..de7290ee770f --- /dev/null +++ b/arch/powerpc/include/asm/task_size_32.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_TASK_SIZE_32_H +#define _ASM_POWERPC_TASK_SIZE_32_H + +#if CONFIG_TASK_SIZE > CONFIG_KERNEL_START +#error User TASK_SIZE overlaps with KERNEL_START address +#endif + +#define TASK_SIZE (CONFIG_TASK_SIZE) + +/* + * This decides where the kernel will search for a free chunk of vm space during + * mmap's. + */ +#define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3) + +#define DEFAULT_MAP_WINDOW TASK_SIZE +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX STACK_TOP + +#endif /* _ASM_POWERPC_TASK_SIZE_32_H */ |