kernel.git/arch/mips/Kconfig, branch linux-5.3.y

Merge tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping

2019-07-12T22:13:55Z

Pull dma-mapping updates from Christoph Hellwig: - move the USB special case that bounced DMA through a device bar into the USB code instead of handling it in the common DMA code (Laurentiu Tudor and Fredrik Noring) - don't dip into the global CMA pool for single page allocations (Nicolin Chen) - fix a crash when allocating memory for the atomic pool failed during boot (Florian Fainelli) - move support for MIPS-style uncached segments to the common code and use that for MIPS and nios2 (me) - make support for DMA_ATTR_NON_CONSISTENT and DMA_ATTR_NO_KERNEL_MAPPING generic (me) - convert nds32 to the generic remapping allocator (me) * tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping: (29 commits) dma-mapping: mark dma_alloc_need_uncached as __always_inline MIPS: only select ARCH_HAS_UNCACHED_SEGMENT for non-coherent platforms usb: host: Fix excessive alignment restriction for local memory allocations lib/genalloc.c: Add algorithm, align and zeroed family of DMA allocators nios2: use the generic uncached segment support in dma-direct nds32: use the generic remapping allocator for coherent DMA allocations arc: use the generic remapping allocator for coherent DMA allocations dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code dma-direct: handle DMA_ATTR_NON_CONSISTENT in common code dma-mapping: add a dma_alloc_need_uncached helper openrisc: remove the partial DMA_ATTR_NON_CONSISTENT support arc: remove the partial DMA_ATTR_NON_CONSISTENT support arm-nommu: remove the partial DMA_ATTR_NON_CONSISTENT support ARM: dma-mapping: allow larger DMA mask than supported dma-mapping: truncate dma masks to what dma_addr_t can hold iommu/dma: Apply dma_{alloc,free}_contiguous functions dma-remap: Avoid de-referencing NULL atomic_pool MIPS: use the generic uncached segment support in dma-direct dma-direct: provide generic support for uncached kernel segments au1100fb: fix DMA API abuse ...

mm: rename CONFIG_HAVE_GENERIC_GUP to CONFIG_HAVE_FAST_GUP

2019-07-12T18:05:44Z

We only support the generic GUP now, so rename the config option to be more clear, and always use the mm/Kconfig definition of the symbol and select it from the arch Kconfigs. Link: http://lkml.kernel.org/r/20190625143715.1689-11-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Khalid Aziz Reviewed-by: Jason Gunthorpe Cc: Andrey Konovalov Cc: Benjamin Herrenschmidt Cc: David Miller Cc: James Hogan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Paul Burton Cc: Paul Mackerras Cc: Ralf Baechle Cc: Rich Felker Cc: Yoshinori Sato Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MIPS: use the generic get_user_pages_fast code

2019-07-12T18:05:44Z

The mips code is mostly equivalent to the generic one, minus various bugfixes and an arch override for gup_fast_permitted. Note that this defines ARCH_HAS_PTE_SPECIAL for mips as mips has pte_special and pte_mkspecial implemented and used in the existing gup code. They are no-op stubs, though which makes me a little unsure if this is really right thing to do. Note that this also adds back a missing cpu_has_dc_aliases check for __get_user_pages_fast, which the old code was only doing for get_user_pages_fast. This clearly looks like an oversight, as any condition that makes get_user_pages_fast unsafe also applies to __get_user_pages_fast. [hch@lst.de: MIPS: don't select ARCH_HAS_PTE_SPECIAL] Link: http://lkml.kernel.org/r/20190701151818.32227-3-hch@lst.de Link: http://lkml.kernel.org/r/20190625143715.1689-5-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Tested-by: Guenter Roeck Cc: Ralf Baechle Cc: Andrey Konovalov Cc: Benjamin Herrenschmidt Cc: David Miller Cc: James Hogan Cc: Khalid Aziz Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Paul Burton Cc: Paul Mackerras Cc: Rich Felker Cc: Yoshinori Sato Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MIPS: only select ARCH_HAS_UNCACHED_SEGMENT for non-coherent platforms

2019-07-03T22:29:52Z

While mips might architecturally have the uncached segment all the time, the infrastructure to use it is only need on platforms where DMA is at least partially incoherent. Only select it for those configuration to fix a build failure as the arch_dma_prep_coherent symbol is also only provided for non-coherent platforms. Fixes: 2e96e04d25ca ("MIPS: use the generic uncached segment support in dma-direct") Reported-by: Guenter Roeck Signed-off-by: Christoph Hellwig Acked-by: Paul Burton Tested-by: Guenter Roeck

MIPS: use the generic uncached segment support in dma-direct

2019-06-03T14:00:08Z

Stop providing the arch alloc/free hooks and just expose the segment offset instead. Signed-off-by: Christoph Hellwig Acked-by: Paul Burton

Merge tag 'mips_5.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2019-05-19T17:05:28Z

Pull a few more MIPS updates from Paul Burton: "Some SGI IP27 specific PCI rework and a batch of fixes: - A build fix for BMIPS5000 configurations with CONFIG_HW_PERF_EVENTS=y, which also neatly removes some #ifdefery. - A fix to report supported ISAs correctly on older Ingenic SoCs which incorrectly indicate MIPSr2 support in their cop0 Config register. - Some PCI modernization for SGI IP27 systems as part of ongoing work to support some other SGI systems. - A fix allowing use of appended DTB files with generic kernels. - DMA mask fixes for SGI IP22 & Alchemy systems" * tag 'mips_5.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: Alchemy: add DMA masks for on-chip ethernet MIPS: SGI-IP22: provide missing dma_mask/coherent_dma_mask generic: fix appended dtb support MIPS: SGI-IP27: abstract chipset irq from bridge MIPS: SGI-IP27: use generic PCI driver MIPS: Fix Ingenic SoCs sometimes reporting wrong ISA MIPS: perf: Fix build with CONFIG_CPU_BMIPS5000 enabled

mm: memblock: make keeping memblock memory opt-in rather than opt-out

2019-05-14T16:47:50Z

Most architectures do not need the memblock memory after the page allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the arch Kconfig. Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the logic makes it clear which architectures actually use memblock after system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK to the architectures that are still missing that option. Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport Acked-by: Michael Ellerman (powerpc) Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Richard Kuo Cc: Tony Luck Cc: Fenghua Yu Cc: Geert Uytterhoeven Cc: Ralf Baechle Cc: Paul Burton Cc: James Hogan Cc: Ley Foon Tan Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Yoshinori Sato Cc: Rich Felker Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Eric Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MIPS: SGI-IP27: abstract chipset irq from bridge

2019-05-09T23:48:20Z

Bridge ASIC is widely used in different SGI systems, but the connected chipset is either HUB, HEART or BEDROCK. This commit switches to irq domain hierarchy for hub and bridge interrupts to get bridge setup out of hub interrupt code. Signed-off-by: Thomas Bogendoerfer [paul.burton@mips.com: Resolve conflict with commit 69a07a41d908 ("MIPS: SGI-IP27: rework HUB interrupts").] Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org

MIPS: SGI-IP27: use generic PCI driver

2019-05-09T23:39:27Z

Converted bridge code to a platform driver using the PCI generic driver framework and use adding platform devices during xtalk scan. This allows easier sharing bridge driver for other SGI platforms like IP30 (Octane) and IP35 (Origin 3k, Fuel, Tezro). Signed-off-by: Thomas Bogendoerfer [paul.burton@mips.com: - Leave __phys_to_dma(), __dma_to_phys() & pcibus_to_node() in arch/mips/pci/pci-ip27.c since the motivation for moving them disappeared when the driver stopped being moved to drivers/pci.] Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org

Merge tag 'mips_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2019-05-08T23:41:47Z

Pull MIPS updates from Paul Burton: - A set of memblock initialization improvements thanks to Serge Semin, tidying up after our conversion from bootmem to memblock back in v4.20. - Our eBPF JIT the previously supported only MIPS64r2 through MIPS64r5 is improved to also support MIPS64r6. Support for MIPS32 systems is introduced, with the caveat that it only works for programs that don't use 64 bit registers or operations - those will bail out & need to be interpreted. - Improvements to the allocation & configuration of our exception vector that should fix issues seen on some platforms using recent versions of U-Boot. - Some minor improvements to code generated for jump labels, along with enabling them by default for generic kernels. * tag 'mips_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (27 commits) mips: Manually call fdt_init_reserved_mem() method mips: Make sure dt memory regions are valid mips: Perform early low memory test mips: Dump memblock regions for debugging mips: Add reserve-nomap memory type support mips: Use memblock to reserve the __nosave memory range mips: Discard post-CMA-init foreach loop mips: Reserve memory for the kernel image resources MIPS: Remove duplicate EBase configuration MIPS: Sync icache for whole exception vector MIPS: Always allocate exception vector for MIPSr2+ MIPS: Use memblock_phys_alloc() for exception vector mips: Combine memblock init and memory reservation loops mips: Discard rudiments from bootmem_init mips: Make sure kernel .bss exists in boot mem pool mips: vdso: drop unnecessary cc-ldoption Revert "MIPS: ralink: fix cpu clock of mt7621 and add dt clk devices" MIPS: generic: Enable CONFIG_JUMP_LABEL MIPS: jump_label: Use compact branches for >= r6 MIPS: jump_label: Remove redundant nops ...