linux.git/arch/mips/include, branch v6.6.131

MIPS: Loongson: Make cpumask_of_node() robust against NUMA_NO_NODE

2026-03-04T12:20:55+00:00

[ Upstream commit d55d3fe2d1470ac5b6e93efe7998b728013c9fc8 ]

The arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE - which
is a valid index - so add a check for this.

Signed-off-by: John Garry 
Reviewed-by: Huacai Chen 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: vpe-mt: add missing prototypes for vpe_{alloc,start,stop,free}

2025-08-28T14:28:26+00:00

[ Upstream commit 844615dd0f2d95c018ec66b943e08af22b62aff3 ]

These functions are exported but their prototypes are not defined.
This patch adds the missing function prototypes to fix the following
compilation warnings:

arch/mips/kernel/vpe-mt.c:180:7: error: no previous prototype for 'vpe_alloc' [-Werror=missing-prototypes]
  180 | void *vpe_alloc(void)
      |       ^~~~~~~~~
arch/mips/kernel/vpe-mt.c:198:5: error: no previous prototype for 'vpe_start' [-Werror=missing-prototypes]
  198 | int vpe_start(void *vpe, unsigned long start)
      |     ^~~~~~~~~
arch/mips/kernel/vpe-mt.c:208:5: error: no previous prototype for 'vpe_stop' [-Werror=missing-prototypes]
  208 | int vpe_stop(void *vpe)
      |     ^~~~~~~~
arch/mips/kernel/vpe-mt.c:229:5: error: no previous prototype for 'vpe_free' [-Werror=missing-prototypes]
  229 | int vpe_free(void *vpe)
      |     ^~~~~~~~

Signed-off-by: Shiji Yang 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: Use arch specific syscall name match function

2025-06-04T12:42:06+00:00

[ Upstream commit 756276ce78d5624dc814f9d99f7d16c8fd51076e ]

On MIPS system, most of the syscall function name begin with prefix
sys_. Some syscalls are special such as clone/fork, function name of
these begin with __sys_. Since scratch registers need be saved in
stack when these system calls happens.

With ftrace system call method, system call functions are declared with
SYSCALL_DEFINEx, metadata of the system call symbol name begins with
sys_. Here mips specific function arch_syscall_match_sym_name is used to
compare function name between sys_call_table[] and metadata of syscall
symbol.

Signed-off-by: Bibo Mao 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: Fix MAX_REG_OFFSET

2025-05-18T06:24:09+00:00

[ Upstream commit c44572e0cc13c9afff83fd333135a0aa9b27ba26 ]

Fix MAX_REG_OFFSET to point to the last register in 'pt_regs' and not to
the marker itself, which could allow regs_get_register() to return an
invalid offset.

Fixes: 40e084a506eb ("MIPS: Add uprobes support.")
Suggested-by: Maciej W. Rozycki 
Signed-off-by: Thorsten Blum 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: cm: Fix warning if MIPS_CM is disabled

2025-05-02T05:51:04+00:00

commit b73c3ccdca95c237750c981054997c71d33e09d7 upstream.

Commit e27fbe16af5c ("MIPS: cm: Detect CM quirks from device tree")
introduced

arch/mips/include/asm/mips-cm.h:119:13: error: ‘mips_cm_update_property’
	defined but not used [-Werror=unused-function]

Fix this by making empty function implementation inline

Fixes: e27fbe16af5c ("MIPS: cm: Detect CM quirks from device tree")
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

MIPS: cm: Detect CM quirks from device tree

2025-05-02T05:50:52+00:00

[ Upstream commit e27fbe16af5cfc40639de4ced67d1a866a1953e9 ]

Some information that should be retrieved at runtime for the Coherence
Manager can be either absent or wrong. This patch allows checking if
some of this information is available from the device tree and updates
the internal variable accordingly.

For now, only the compatible string associated with the broken HCI is
being retrieved.

Signed-off-by: Gregory CLEMENT 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: ds1287: Match ds1287_set_base_clock() function types

2025-04-25T08:45:58+00:00

commit a759109b234385b74d2f5f4c86b5f59b3201ec12 upstream.

Synchronize the declaration of ds1287_set_base_clock() between
cevt-ds1287.c and ds1287.h.

Fix follow error with gcc-14 when -Werror:

arch/mips/kernel/cevt-ds1287.c:21:5: error: conflicting types for ‘ds1287_set_base_clock’; have ‘int(unsigned int)’
   21 | int ds1287_set_base_clock(unsigned int hz)
      |     ^~~~~~~~~~~~~~~~~~~~~
In file included from arch/mips/kernel/cevt-ds1287.c:13:
./arch/mips/include/asm/ds1287.h:11:13: note: previous declaration of ‘ds1287_set_base_clock’ with type ‘void(unsigned int)’
   11 | extern void ds1287_set_base_clock(unsigned int clock);
      |             ^~~~~~~~~~~~~~~~~~~~~
make[7]: *** [scripts/Makefile.build:207: arch/mips/kernel/cevt-ds1287.o] Error 1
make[6]: *** [scripts/Makefile.build:465: arch/mips/kernel] Error 2
make[6]: *** Waiting for unfinished jobs....

Signed-off-by: WangYuli 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

mm: hugetlb: Add huge page size param to huge_ptep_get_and_clear()

2025-03-13T11:58:38+00:00

commit 02410ac72ac3707936c07ede66e94360d0d65319 upstream.

In order to fix a bug, arm64 needs to be told the size of the huge page
for which the huge_pte is being cleared in huge_ptep_get_and_clear().
Provide for this by adding an `unsigned long sz` parameter to the
function. This follows the same pattern as huge_pte_clear() and
set_huge_pte_at().

This commit makes the required interface modifications to the core mm as
well as all arches that implement this function (arm64, loongarch, mips,
parisc, powerpc, riscv, s390, sparc). The actual arm64 bug will be fixed
in a separate commit.

Cc: stable@vger.kernel.org
Fixes: 66b3923a1a0f ("arm64: hugetlb: add support for PTE contiguous bit")
Acked-by: David Hildenbrand 
Reviewed-by: Alexandre Ghiti  # riscv
Reviewed-by: Christophe Leroy 
Reviewed-by: Catalin Marinas 
Reviewed-by: Anshuman Khandual 
Signed-off-by: Ryan Roberts 
Acked-by: Alexander Gordeev  # s390
Link: https://lore.kernel.org/r/20250226120656.2400136-2-ryan.roberts@arm.com
Signed-off-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

MIPS: mipsregs: Set proper ISA level for virt extensions

2025-01-02T09:32:06+00:00

[ Upstream commit a640d6762a7d404644201ebf6d2a078e8dc84f97 ]

c994a3ec7ecc ("MIPS: set mips32r5 for virt extensions") setted
some instructions in virt extensions to ISA level mips32r5.

However TLB related vz instructions was leftover, also this
shouldn't be done to a R5 or R6 kernel buid.

Reorg macros to set ISA level as needed when _ASM_SET_VIRT
is called.

Signed-off-by: Jiaxun Yang 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: WangYuli 
Signed-off-by: Sasha Levin

mips: asm: fix warning when disabling MIPS_FP_SUPPORT

2024-12-09T09:31:44+00:00

[ Upstream commit da09935975c8f8c90d6f57be2422dee5557206cd ]

When MIPS_FP_SUPPORT is disabled, __sanitize_fcr31() is defined as
nothing, which triggers a gcc warning:

    In file included from kernel/sched/core.c:79:
    kernel/sched/core.c: In function 'context_switch':
    ./arch/mips/include/asm/switch_to.h:114:39: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
      114 |                 __sanitize_fcr31(next);                                 \
          |                                       ^
    kernel/sched/core.c:5316:9: note: in expansion of macro 'switch_to'
     5316 |         switch_to(prev, next, prev);
          |         ^~~~~~~~~

Fix this by providing an empty body for __sanitize_fcr31() like one is
defined for __mips_mt_fpaff_switch_to().

Fixes: 36a498035bd2 ("MIPS: Avoid FCSR sanitization when CONFIG_MIPS_FP_SUPPORT=n")
Signed-off-by: Jonas Gorski 
Reviewed-by: Maciej W. Rozycki 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin