linux.git/arch/mips/kernel/setup.c, branch v6.0

MIPS: Use memblock_add_node() in early_parse_mem() under CONFIG_NUMA

2022-05-24T11:05:08+00:00

Use memblock_add_node to add new memblock region within a NUMA node
in early_parse_mem() under CONFIG_NUMA, otherwise the mem parameter
can not work well.

Signed-off-by: Tiezhu Yang 
Signed-off-by: Thomas Bogendoerfer

MIPS: Return -EINVAL if mem parameter is empty in early_parse_mem()

2022-05-24T11:04:53+00:00

In the current code, the users usually need to make sure the value
of mem parameter is correct, but it is better to do some check to
avoid potential boot hangs.

This commit checks whether mem parameter is empty, if yes, return
-EINVAL before call memblock_remove() and memblock_add().

Signed-off-by: Tiezhu Yang 
Signed-off-by: Thomas Bogendoerfer

mips: setup: use strscpy to replace strlcpy

2022-05-23T09:29:48+00:00

The strlcpy should not be used because it doesn't limit the source
length. Preferred is strscpy.

Signed-off-by: XueBing Chen 
Signed-off-by: Thomas Bogendoerfer

mips: setup: fix setnocoherentio() boolean setting

2022-02-22T08:35:02+00:00

Correct a typo/pasto: setnocoherentio() should set
dma_default_coherent to false, not true.

Fixes: 14ac09a65e19 ("MIPS: refactor the runtime coherent vs noncoherent DMA indicators")
Signed-off-by: Randy Dunlap 
Cc: Christoph Hellwig 
Cc: Thomas Bogendoerfer 
Cc: linux-mips@vger.kernel.org
Reviewed-by: Christoph Hellwig 
Signed-off-by: Thomas Bogendoerfer

memblock: make memblock_find_in_range method private

2021-09-03T16:58:17+00:00

There are a lot of uses of memblock_find_in_range() along with
memblock_reserve() from the times memblock allocation APIs did not exist.

memblock_find_in_range() is the very core of memblock allocations, so any
future changes to its internal behaviour would mandate updates of all the
users outside memblock.

Replace the calls to memblock_find_in_range() with an equivalent calls to
memblock_phys_alloc() and memblock_phys_alloc_range() and make
memblock_find_in_range() private method of memblock.

This simplifies the callers, ensures that (unlikely) errors in
memblock_reserve() are handled and improves maintainability of
memblock_find_in_range().

Link: https://lkml.kernel.org/r/20210816122622.30279-1-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Reviewed-by: Catalin Marinas 		[arm64]
Acked-by: Kirill A. Shutemov 
Acked-by: Rafael J. Wysocki 	[ACPI]
Acked-by: Russell King (Oracle) 
Acked-by: Nick Kossifidis 			[riscv]
Tested-by: Guenter Roeck 
Acked-by: Rob Herring 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

MIPS: kernel: setup.c: fix compilation error

2021-03-30T12:51:23+00:00

With ath79_defconfig enabling CONFIG_MIPS_ELF_APPENDED_DTB gives a
compilation error. This patch fixes it.

Build log:
...
  CC      kernel/locking/percpu-rwsem.o
../arch/mips/kernel/setup.c:46:39: error: conflicting types for
'__appended_dtb'
 const char __section(".appended_dtb") __appended_dtb[0x100000];
                                       ^~~~~~~~~~~~~~
In file included from ../arch/mips/kernel/setup.c:34:
../arch/mips/include/asm/bootinfo.h:118:13: note: previous declaration
of '__appended_dtb' was here
 extern char __appended_dtb[];
             ^~~~~~~~~~~~~~
  CC      fs/attr.o
make[4]: *** [../scripts/Makefile.build:271: arch/mips/kernel/setup.o]
 Error 1
...

Root cause seems to be:
Fixes: b83ba0b9df56 ("MIPS: of: Introduce helper function to get DTB")

Signed-off-by: Mauri Sandberg 
Reviewed-by: Thomas Bogendoerfer 
Cc: trivial@kernel.org
Signed-off-by: Thomas Bogendoerfer

MIPS: Use common way to parse elfcorehdr

2021-02-13T08:57:22+00:00

"elfcorehdr" can be parsed at kernel/crash_dump.c

Signed-off-by: Jinyang He 
Signed-off-by: Thomas Bogendoerfer

MIPS: remove CONFIG_DMA_MAYBE_COHERENT

2021-02-13T08:51:45+00:00

CONFIG_DMA_MAYBE_COHERENT just guards two early init options now.  Just
enable them unconditionally for CONFIG_DMA_NONCOHERENT.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Thomas Bogendoerfer

driver core: lift dma_default_coherent into common code

2021-02-13T08:51:45+00:00

Lift the dma_default_coherent variable from the mips architecture code
to the driver core.  This allows an architecture to sdefault all device
to be DMA coherent at run time, even if the kernel is build with support
for DMA noncoherent device.  By allowing device_initialize to set the
->dma_coherent field to this default the amount of arch hooks required
for this behavior can be greatly reduced.

Signed-off-by: Christoph Hellwig 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Thomas Bogendoerfer

MIPS: refactor the runtime coherent vs noncoherent DMA indicators

2021-02-13T08:51:45+00:00

Replace the global coherentio enum, and the hw_coherentio (fake) boolean
variables with a single boolean dma_default_coherent flag.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Thomas Bogendoerfer