kernel.git/arch/powerpc/mm/slice.c, branch linux-5.3.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/mm: define subarch SLB_ADDR_LIMIT_DEFAULT

2019-05-02T15:20:23Z

This patch defines a subarch specific SLB_ADDR_LIMIT_DEFAULT to remove the #ifdefs around the setup of mm->context.slb_addr_limit It also generalises the use of mm_ctx_set_slb_addr_limit() helper. Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: remove a couple of #ifdef CONFIG_PPC_64K_PAGES in mm/slice.c

2019-05-02T15:20:23Z

This patch replaces a couple of #ifdef CONFIG_PPC_64K_PAGES by IS_ENABLED(CONFIG_PPC_64K_PAGES) to improve code maintainability. Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: remove unnecessary #ifdef CONFIG_PPC64

2019-05-02T15:20:22Z

For PPC32 that's a noop, gcc should be smart enough to ignore it. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: move slice_mask_for_size() into mmu.h

2019-05-02T15:20:22Z

Move slice_mask_for_size() into subarch mmu.h Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V [mpe: Retain the BUG_ON()s, rather than converting to VM_BUG_ON()] Signed-off-by: Michael Ellerman

powerpc/mm: hand a context_t over to slice_mask_for_size() instead of mm_struct

2019-05-02T15:20:22Z

slice_mask_for_size() only uses mm->context, so hand directly a pointer to the context. This will help moving the function in subarch mmu.h in the next patch by avoiding having to include the definition of struct mm_struct Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: Add helpers for accessing hash translation related variables

2019-04-21T13:12:38Z

We want to switch to allocating them runtime only when hash translation is enabled. Add helpers so that both book3s and nohash can be adapted to upcoming change easily. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm/hash: Handle mmap_min_addr correctly in get_unmapped_area topdown search

2019-02-26T05:26:29Z

When doing top-down search the low_limit is not PAGE_SIZE but rather max(PAGE_SIZE, mmap_min_addr). This handle cases in which mmap_min_addr > PAGE_SIZE. Fixes: fba2369e6ceb ("mm: use vm_unmapped_area() on powerpc architecture") Reviewed-by: Laurent Dufour Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: fix always true/false warning in slice.c

2018-10-20T02:26:47Z

This patch fixes the following warnings (obtained with make W=1). arch/powerpc/mm/slice.c: In function 'slice_range_to_mask': arch/powerpc/mm/slice.c:73:12: error: comparison is always true due to limited range of data type [-Werror=type-limits] if (start < SLICE_LOW_TOP) { ^ arch/powerpc/mm/slice.c:81:20: error: comparison is always false due to limited range of data type [-Werror=type-limits] if ((start + len) > SLICE_LOW_TOP) { ^ arch/powerpc/mm/slice.c: In function 'slice_mask_for_free': arch/powerpc/mm/slice.c:136:17: error: comparison is always true due to limited range of data type [-Werror=type-limits] if (high_limit <= SLICE_LOW_TOP) ^ arch/powerpc/mm/slice.c: In function 'slice_check_range_fits': arch/powerpc/mm/slice.c:185:12: error: comparison is always true due to limited range of data type [-Werror=type-limits] if (start < SLICE_LOW_TOP) { ^ arch/powerpc/mm/slice.c:195:39: error: comparison is always false due to limited range of data type [-Werror=type-limits] if (SLICE_NUM_HIGH && ((start + len) > SLICE_LOW_TOP)) { ^ arch/powerpc/mm/slice.c: In function 'slice_scan_available': arch/powerpc/mm/slice.c:306:11: error: comparison is always true due to limited range of data type [-Werror=type-limits] if (addr < SLICE_LOW_TOP) { ^ arch/powerpc/mm/slice.c: In function 'get_slice_psize': arch/powerpc/mm/slice.c:709:11: error: comparison is always true due to limited range of data type [-Werror=type-limits] if (addr < SLICE_LOW_TOP) { ^ Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: fix missing prototypes in slice.c

2018-10-20T02:26:47Z

This patch fixes the following warnings (obtained with make W=1). arch/powerpc/mm/slice.c: At top level: arch/powerpc/mm/slice.c:682:15: error: no previous prototype for 'arch_get_unmapped_area' [-Werror=missing-prototypes] unsigned long arch_get_unmapped_area(struct file *filp, ^ arch/powerpc/mm/slice.c:692:15: error: no previous prototype for 'arch_get_unmapped_area_topdown' [-Werror=missing-prototypes] unsigned long arch_get_unmapped_area_topdown(struct file *filp, ^ Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman