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linux/arch/mips/kernel
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Maciej W. Rozycki 0e39d8dd87 MIPS: Always record SEGBITS in cpu_data.vmbits 
commit 8374c2cb83 upstream.

With a 32-bit kernel running on 64-bit MIPS hardware the hardcoded value
of `cpu_vmbits' only records the size of compatibility useg and does not
reflect the size of native xuseg or the complete range of values allowed
in the VPN2 field of TLB entries.

An upcoming change will need the actual VPN2 value range permitted even
in 32-bit kernel configurations, so always include the `vmbits' member
in `struct cpuinfo_mips' and probe for SEGBITS when running on 64-bit
hardware and resorting to the currently hardcoded value of 31 on 32-bit
processors.  No functional change for users of `cpu_vmbits'.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-06-01 17:35:03 +02:00
..
syscalls mips: fix compat_sys_lseek syscall 2024-07-27 10:46:10 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
access-helper.h MIPS: Fix new sparse warnings 2021-04-07 16:11:05 +02:00
asm-offsets.c MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
bmips_5xxx_init.S MIPS: BCM5xxx: Remove dead init_fpu code 2018-11-08 11:20:57 -08:00
bmips_vec.S MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code 2016-05-09 12:00:01 +02:00
branch.c MIPS: kernel: include probes-common.h header in branch.c 2020-09-21 22:14:24 +02:00
cacheinfo.c drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 2021-09-01 10:29:10 +02:00
cevt-bcm1480.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-ds1287.c MIPS: cevt-ds1287: Add missing ds1287.h include 2025-05-02 07:44:23 +02:00
cevt-gt641xx.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-r4k.c MIPS: cevt-r4k: Don't call get_c0_compare_int if timer irq is installed 2024-09-12 11:07:50 +02:00
cevt-sb1250.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-txx9.c mips: kernel: convert comma to semicolon 2020-12-28 22:32:28 +01:00
cmpxchg.c locking/atomic: mips: move to ARCH_ATOMIC 2021-05-26 13:20:51 +02:00
cps-vec-ns16550.S mips: Add CPS_NS16550_WIDTH config 2020-05-22 09:12:52 +02:00
cps-vec.S MIPS: CPS: don't create redundant .text.cps-vec section 2021-01-15 15:27:54 +01:00
cpu-probe.c MIPS: Always record SEGBITS in cpu_data.vmbits 2026-06-01 17:35:03 +02:00
cpu-r3k-probe.c MIPS: Always record SEGBITS in cpu_data.vmbits 2026-06-01 17:35:03 +02:00
crash.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
crash_dump.c MIPS: crash_dump.c: Simplify copy_oldmem_page() 2021-02-09 13:30:12 +01:00
csrc-bcm1480.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
csrc-ioasic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
csrc-r4k.c mips: csrc-r4k: Mark R4K timer as unstable if CPU freq changes 2020-05-22 09:14:06 +02:00
csrc-sb1250.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
early_printk.c mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
early_printk_8250.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
elf.c mips: Call lose_fpu(0) before initializing fcr31 in mips_set_personality_nan 2024-02-23 08:54:36 +01:00
entry.S mips: Add MIPS Release 5 support 2020-05-22 09:09:01 +02:00
fpu-probe.c MIPS: cpu-probe: move fpu probing/handling into its own file 2020-10-12 12:04:50 +02:00
fpu-probe.h MIPS: cpu-probe: move fpu probing/handling into its own file 2020-10-12 12:04:50 +02:00
ftrace.c MIPS: ftrace: Declare ftrace_get_parent_ra_addr() as static 2025-03-13 12:50:33 +01:00
genex.S MIPS: Make check condition for SDBBP consistent with EJTAG spec 2021-02-11 11:04:31 +01:00
gpio_txx9.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
head.S MIPS: of: Introduce helper function to get DTB 2021-02-04 13:34:51 +01:00
i8253.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
idle.c Revert "MIPS: Remove unused R4300 CPU support" 2021-01-22 11:39:45 +01:00
irq-gt641xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
irq-msc01.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq.c irqchip/mips: Fix RCU violation when using irqdomain lookup on interrupt entry 2021-07-09 10:18:58 +01:00
irq_txx9.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jump_label.c MIPS: jump_label: Fix compat branch range check 2022-11-16 09:58:24 +01:00
kgdb.c MIPS: kernel: Drop kgdb_call_nmi_hook 2021-02-15 12:23:54 +01:00
kprobes.c kprobes: treewide: Cleanup the error messages for kprobes 2023-02-22 12:57:00 +01:00
linux32.c MIPS: Delete unused code in linux32.c 2018-08-01 13:20:27 -07:00
machine_kexec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
Makefile MIPS: Makefile: Replace -pg with CC_FLAGS_FTRACE 2021-04-21 13:44:35 +02:00
mcount.S mips: ftrace: fix static function graph tracing 2018-06-19 15:00:12 -07:00
mips-cm.c MIPS: cm: Detect CM quirks from device tree 2025-05-02 07:44:34 +02:00
mips-cpc.c mips: cpc: Fix refcount leak in mips_cpc_default_phys_base 2022-06-14 18:36:14 +02:00
mips-mt-fpaff.c MIPS: Replace deprecated CPU-hotplug functions. 2021-08-05 10:57:01 +02:00
mips-mt.c MIPS: MT: Remove norps command line parameter 2018-11-26 22:49:14 -08:00
mips-r2-to-r6-emul.c MIPS: Fix build error due to PTR used in more places 2022-02-16 12:56:16 +01:00
module.c MIPS: module: optimize module relocations processing 2021-01-18 15:55:16 +01:00
octeon_switch.S Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
perf_event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
perf_event_mipsxx.c MIPS: perf: Add support for OCTEON III perf events. 2021-01-04 11:32:57 +01:00
perf_regs.c MIPS: kernel: Support extracting off-line stack traces from user-space with perf 2021-02-04 21:55:45 +01:00
pm-cps.c MIPS: pm-cps: Use per-CPU variables as per-CPU, not per-core 2025-06-04 14:38:00 +02:00
pm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
probes-common.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
proc.c MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK 2022-08-17 14:22:58 +02:00
process.c MIPS: Don't crash in stack_top() for tasks without ABI or vDSO 2025-08-28 16:24:23 +02:00
prom.c MIPS: replace add_memory_region with memblock 2020-10-12 12:01:36 +02:00
ptrace.c MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
ptrace32.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
r4k-bugs64.c arch: mips: update references to current linux-mips list 2021-02-23 13:24:38 +01:00
r4k_fpu.S MIPS: Fix build error due to PTR used in more places 2022-02-16 12:56:16 +01:00
r4k_switch.S Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
r2300_fpu.S MIPS: Fix build error due to PTR used in more places 2022-02-16 12:56:16 +01:00
r2300_switch.S Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
relocate.c MIPS: Work around LLVM bug when gp is used as global register variable 2026-03-04 07:19:54 -05:00
relocate_kernel.S MIPS: fix duplicate definitions for exported symbols 2022-11-26 09:24:38 +01:00
reset.c MIPS: Hang more efficiently on halt/powerdown/restart 2018-03-09 11:22:43 +00:00
rtlx-cmp.c MIPS: APRP: Fix an issue when device_create() fails. 2014-08-01 17:30:35 +02:00
rtlx-mt.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
rtlx.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
scall32-o32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
scall64-n32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
scall64-n64.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
scall64-o32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-05-17 11:50:54 +02:00
segment.c mips: kernel: no need to check return value of debugfs_create functions 2019-01-22 11:17:20 -08:00
setup.c mips: Fix incorrect max_low_pfn adjustment 2024-01-25 14:52:50 -08:00
signal-common.h MIPS: Save MSA extended context around signals 2015-09-03 12:07:59 +02:00
signal.c entry: rseq: Call rseq_handle_notify_resume() in tracehook_notify_resume() 2021-09-22 10:24:01 -04:00
signal32.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
signal_n32.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
signal_o32.c signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
smp-bmips.c mips: smp-bmips: fix CPU mappings 2021-03-06 08:43:39 +01:00
smp-cmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182 2019-05-30 11:29:20 -07:00
smp-cps.c MIPS: SMP-CPS: Fix address for GCR_ACCESS register for CM3 and later 2024-08-19 05:45:24 +02:00
smp-mt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182 2019-05-30 11:29:20 -07:00
smp-up.c MIPS: SMP: Allow boot_secondary SMP op to return errors 2017-08-30 00:57:27 +02:00
smp.c MIPS: smp: fill in sibling and core maps earlier 2022-03-19 13:47:48 +01:00
spinlock_test.c mips: kernel: use DEFINE_DEBUGFS_ATTRIBUTE with debugfs_create_file_unsafe() 2021-03-14 14:09:49 +01:00
spram.c mips: Add CONFIG/CONFIG6/Cause reg fields macro 2020-05-22 09:12:22 +02:00
stacktrace.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
sync-r4k.c MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts 2020-01-22 10:16:18 -08:00
syscall.c MIPS: Fix build error due to PTR used in more places 2022-02-16 12:56:16 +01:00
sysrq.c MIPS: constify sysrq_key_op 2020-05-15 14:53:19 +02:00
time.c MIPS: Fix CP0 counter erratum detection for R4k CPUs 2022-05-12 12:30:00 +02:00
topology.c MIPS: CPU#0 is not hotpluggable 2020-07-26 10:18:35 +02:00
traps.c MIPS: reserve exception vector space ONLY ONCE 2024-03-01 13:21:44 +01:00
unaligned.c MIPS: Fix new sparse warnings 2021-04-07 16:11:05 +02:00
uprobes.c MIPS: Return true/false (not 1/0) from bool functions 2021-08-21 10:37:30 +02:00
vdso.c MIPS: vdso: Utilize __pa() for gic_pfn 2022-08-17 14:24:06 +02:00
vmlinux.lds.S MIPS: Define RUNTIME_DISCARD_EXIT in LD script 2023-04-26 13:51:53 +02:00
vpe-cmp.c MIPS: vpe-cmp: fix possible memory leak while module exiting 2022-12-31 13:14:02 +01:00
vpe-mt.c MIPS: vpe-mt: drop physical_memsize 2024-03-01 13:21:51 +01:00
vpe.c MIPS: vpe: Remove vpe_getcwd 2021-01-27 21:49:16 +01:00
watch.c MIPS: Use fallthrough for arch/mips 2020-05-07 11:55:47 +02:00