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2f0584f3f4
mirror_ubuntu-kernels/arch/mips/include/asm
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Rick Edgecombe 2f0584f3f4 mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma() 
The x86 Shadow stack feature includes a new type of memory called shadow
stack. This shadow stack memory has some unusual properties, which requires
some core mm changes to function properly.

One of these unusual properties is that shadow stack memory is writable,
but only in limited ways. These limits are applied via a specific PTE
bit combination. Nevertheless, the memory is writable, and core mm code
will need to apply the writable permissions in the typical paths that
call pte_mkwrite(). The goal is to make pte_mkwrite() take a VMA, so
that the x86 implementation of it can know whether to create regular
writable or shadow stack mappings.

But there are a couple of challenges to this. Modifying the signatures of
each arch pte_mkwrite() implementation would be error prone because some
are generated with macros and would need to be re-implemented. Also, some
pte_mkwrite() callers operate on kernel memory without a VMA.

So this can be done in a three step process. First pte_mkwrite() can be
renamed to pte_mkwrite_novma() in each arch, with a generic pte_mkwrite()
added that just calls pte_mkwrite_novma(). Next callers without a VMA can
be moved to pte_mkwrite_novma(). And lastly, pte_mkwrite() and all callers
can be changed to take/pass a VMA.

Start the process by renaming pte_mkwrite() to pte_mkwrite_novma() and
adding the pte_mkwrite() wrapper in linux/pgtable.h. Apply the same
pattern for pmd_mkwrite(). Since not all archs have a pmd_mkwrite_novma(),
create a new arch config HAS_HUGE_PAGE that can be used to tell if
pmd_mkwrite() should be defined. Otherwise in the !HAS_HUGE_PAGE cases the
compiler would not be able to find pmd_mkwrite_novma().

No functional change.

Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/lkml/CAHk-=wiZjSu7c9sFYZb3q04108stgHff2wfbokGCCgW7riz+8Q@mail.gmail.com/
Link: https://lore.kernel.org/all/20230613001108.3040476-2-rick.p.edgecombe%40intel.com
2023-07-11 14:10:56 -07:00
..
dec MIPS: dec: prom: Address -Warray-bounds warning 2023-06-23 15:00:29 +02:00
fw add intptr_t 2023-06-09 17:44:13 -07:00
ip32
mach-ar7 MIPS: AR7: remove orphan declarations from arch/mips/include/asm/mach-ar7/ar7.h 2022-09-19 16:37:27 +02:00
mach-ath25 MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-ath79 MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-au1x00 gpiolib: remove unused gpio_cansleep() 2023-06-13 16:49:23 +02:00
mach-bcm47xx MIPS: BCM47XX: Add support for Huawei B593u-12 2023-03-14 17:05:14 +01:00
mach-bcm63xx PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
mach-bmips MIPS: cleanup fixup_bigphys_addr handling 2020-04-19 16:09:44 +02:00
mach-cavium-octeon MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-cobalt MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-db1x00
mach-dec MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-generic MIPS: Remove no longer used ide.h 2023-04-05 10:08:51 +02:00
mach-ingenic MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-ip22 MIPS: Remove mach-*/war.h 2020-09-07 22:25:27 +02:00
mach-ip27 MIPS: IP27: Remove incorrect `cpu_has_fpu' override 2022-05-04 22:23:14 +02:00
mach-ip28 MIPS: SGI-IP28: disable use of ll/sc in kernel 2020-10-08 10:33:27 +02:00
mach-ip30 MIPS: IP30: Remove incorrect `cpu_has_fpu' override 2022-05-04 22:23:18 +02:00
mach-ip32 MIPS: Remove mach-*/war.h 2020-09-07 22:25:27 +02:00
mach-jazz mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
mach-lantiq MIPS: lantiq: remove unused function declaration 2023-04-05 10:21:06 +02:00
mach-loongson2ef MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
mach-loongson32 - added support for TP-Link HC220 G5 v1 2023-06-29 15:01:51 -07:00
mach-loongson64 irqchip/loongson-liointc: Add ACPI init support 2022-07-20 12:09:21 +01:00
mach-malta MIPS: malta: remove mach-malta/malta-dtshim.h header file 2020-09-21 22:16:47 +02:00
mach-n64 mips: Add N64 machine type 2021-01-22 11:40:00 +01:00
mach-pic32 MIPS: Add header files reference with path prefix 2020-03-19 13:12:27 +01:00
mach-ralink mips: ralink: mt7620: remove clock related code 2023-06-21 14:50:23 +02:00
mach-rc32434 MIPS: Fix a compilation issue 2023-01-27 17:22:06 +01:00
mach-rm MIPS: Remove mach-*/war.h 2020-09-07 22:25:27 +02:00
mach-sibyte MIPS: Remove mach-*/war.h 2020-09-07 22:25:27 +02:00
mach-tx49xx MIPS: TXX9: Remove rbtx4939 board support 2022-01-02 14:10:40 +01:00
mips-boards MIPS: launch.h: add include guard to prevent build errors 2021-05-25 15:18:59 +02:00
octeon staging: octeon: cvmx_ptr_to_phys() should return physaddr_t 2022-11-02 08:21:49 +01:00
pci MIPS: PCI: Support mapping of INTB/C/D for pci-xtalk-bridge 2020-01-09 15:30:53 -08:00
sgi MIPS: SGI-IP30: Move irq bits to better header files 2020-09-21 22:15:49 +02:00
sibyte MIPS: sibyte: Remove Sibyte CARMEL and CRHINE board support 2023-03-17 10:27:21 +01:00
sn MIPS: remove define-only GDA_MAGIC, previously magic number 2022-09-24 14:17:18 +02:00
txx9 MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
vdso MIPS: vdso: Invalid GIC access through VDSO 2021-07-09 15:29:06 +02:00
xtalk MIPS: SGI-IP27: use generic PCI driver 2019-05-09 16:39:27 -07:00
abi.h
addrspace.h MIPS: Remove unused R8000 CPU support 2019-07-23 14:33:51 -07:00
amon.h
arch_hweight.h
asm-eva.h MIPS: Fix typo for user_ld macro definition 2020-04-16 17:30:16 +02:00
asm-offsets.h
asm-prototypes.h MIPS: Restore symbol versions for copy_page_cpu and clear_page_cpu 2022-12-01 11:46:05 +01:00
asm.h MIPS: Workaround clang inline compat branch issue 2023-02-28 23:09:49 +01:00
asmmacro-32.h MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT 2023-01-26 12:41:16 +09:00
asmmacro-64.h
asmmacro.h MIPS: Drop unused positional parameter in local_irq_{dis,en}able 2023-04-05 10:20:00 +02:00
atomic.h locking/atomic: make atomic*_{cmp,}xchg optional 2023-06-05 09:57:14 +02:00
barrier.h MIPS: barrier: Make __smp_mb__before_atomic() a no-op for Loongson3 2019-10-07 09:43:08 -07:00
bcache.h
bitops.h bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
bitrev.h
bmips-spaces.h
bmips.h MIPS: bmips: mark exception vectors as char arrays 2019-10-23 21:07:28 -07:00
bootinfo.h MIPS: Ingenic: Add system type for new Ingenic SoCs. 2021-07-19 13:16:42 +02:00
branch.h MIPS: Fix the declaration conflict of mm_isBranchInstr() 2020-04-24 18:17:44 +02:00
break.h
bug.h
bugs.h mips/cpu: Switch to arch_cpu_finalize_init() 2023-06-16 10:16:00 +02:00
cache.h MIPS: Move declaration of bcache ops to cache.c 2023-04-05 09:45:08 +02:00
cacheflush.h MIPS: mm: Remove local_cache_flush_page 2023-04-05 10:08:53 +02:00
cacheops.h MIPS: Rename the "Fill" cache ops to avoid build failure 2020-04-26 15:40:50 +02:00
cdmm.h
cevt-r4k.h
checksum.h MIPS: Rewrite `csum_tcpudp_nofold' in plain C 2022-05-23 11:29:59 +02:00
clocksource.h mips: Introduce asm/vdso/clocksource.h 2020-03-21 15:23:55 +01:00
cmp.h
cmpxchg.h locking/arch: Rename all internal __xchg() names to __arch_xchg() 2023-04-29 09:08:44 +02:00
compat-signal.h
compat.h asm-generic: compat: Cleanup duplicate definitions 2022-04-26 13:35:54 -07:00
compiler.h MIPS: remove GCC < 4.9 support 2020-11-11 23:49:22 +01:00
cop2.h MIPS: Remove NETLOGIC support 2021-10-24 17:24:47 +02:00
cpu-features.h MIPS: cpu-features: Use boot_cpu_type for CPU type based features 2023-06-09 09:56:22 +02:00
cpu-info.h MIPS: emulate CPUCFG instruction on older Loongson64 cores 2020-05-24 09:26:55 +02:00
cpu-type.h MIPS: Remove VR41xx support 2022-07-14 11:52:29 +02:00
cpu.h MIPS: Remove VR41xx support 2022-07-14 11:52:29 +02:00
cpufeature.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
debug.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
delay.h
div64.h MIPS: Avoid handcoded DIVU in `__div64_32' altogether 2021-04-23 13:40:31 +02:00
dma-direct.h dma-direct: rename and cleanup __phys_to_dma 2020-09-11 09:14:43 +02:00
dma-mapping.h dma-mapping: no need to pass a bus_type into get_arch_dma_ops() 2023-02-15 12:35:20 +01:00
dma.h PCI: Move isa_dma_bridge_buggy out of asm/dma.h 2022-07-22 17:24:47 -05:00
dmi.h MIPS: Add support for Desktop Management Interface (DMI) 2020-03-23 15:44:05 +01:00
ds1287.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
dsemul.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dsp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
edac.h MIPS: Avoid using .set mips0 to restore ISA 2018-11-09 10:23:19 -08:00
elf.h mips compat: switch to compat_binfmt_elf.c 2021-01-06 08:42:49 -05:00
elfcore-compat.h mips compat: switch to compat_binfmt_elf.c 2021-01-06 08:42:49 -05:00
errno.h
eva.h
exec.h
extable.h
fb.h fbdev: Move framebuffer I/O helpers into <asm/fb.h> 2023-05-18 11:07:25 +02:00
fixmap.h mips: fix comment about pgtable_init() 2023-04-05 19:42:52 -07:00
floppy.h
fpregdef.h MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT 2023-01-26 12:41:16 +09:00
fpu_emulator.h MIPS: Fix the declaration conflict of mm_isBranchInstr() 2020-04-24 18:17:44 +02:00
fpu.h MIPS: Fix unreachable code issue 2021-07-13 15:08:15 -05:00
ftrace.h MIPS: Fix build error due to PTR used in more places 2022-01-27 09:04:19 +01:00
futex.h MIPS: remove asm/war.h 2022-02-22 09:35:49 +01:00
ginvt.h MIPS: Avoid macro redefinitions 2021-09-23 11:23:35 +02:00
gio_device.h MIPS: ip22-gio: Make gio_match_device() static 2020-01-13 10:55:40 -08:00
gt64120.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182 2019-05-30 11:29:20 -07:00
hardirq.h
hazards.h MIPS: Remove NETLOGIC support 2021-10-24 17:24:47 +02:00
highmem.h MIPS: Fix PKMAP with 32-bit MIPS huge page support 2021-06-30 14:41:32 +02:00
hpet.h
hugetlb.h mm: change huge_ptep_clear_flush() to return the original pte 2022-05-13 16:48:55 -07:00
hw_irq.h
i8259.h irqchip: Add driver for Loongson-3 HyperTransport PIC controller 2020-03-25 10:56:43 +01:00
idle.h MIPS: idle: Add prototype for function check_wait 2020-09-27 13:00:45 +02:00
inst.h MIPS: Make definitions of MIPSInst_FMA_{FUNC,FMTM} consistent with MIPS64 manual 2021-01-22 11:45:52 +01:00
io.h mips: provide unxlate_dev_mem_ptr() in asm/io.h 2023-06-09 09:48:53 +02:00
irq_cpu.h MIPS: Kill RM7K & RM9K IRQ Code 2021-01-04 11:37:27 +01:00
irq_gt641xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
irq_regs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq.h init: consolidate prototypes in linux/init.h 2023-06-09 17:44:16 -07:00
irqflags.h mips: Implement arch_irqs_disabled() 2020-08-26 12:41:55 +02:00
isa-rev.h
isadep.h MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
jazz.h
jazzdma.h MIPS/jazzdma: remove the unused vdma_remap function 2020-09-11 08:13:49 +02:00
jump_label.h jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
Kbuild mips: syscalls: switch to generic syscalltbl.sh 2021-03-10 15:19:14 +01:00
kdebug.h
kexec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
kgdb.h mips: kgdb: adjust the comment to the actual ifdef condition 2021-12-16 15:47:58 +01:00
kprobes.h mm, kprobes: generalize and rename notify_page_fault() as kprobe_page_fault() 2019-07-16 19:23:22 -07:00
kvm_host.h MIPS: KVM: Fix NULL pointer dereference 2023-07-03 16:06:19 +02:00
kvm_types.h KVM: MIPS: Use common KVM implementation of MMU memory caches 2020-07-09 13:29:44 -04:00
linkage.h
local.h locking/arch: Wire up local_try_cmpxchg() 2023-04-29 09:09:16 +02:00
maar.h mips: MAAR: Add XPA mode support 2020-05-19 17:39:32 +02:00
machine.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
mc146818-time.h MIPS: Convert read_persistent_clock() to read_persistent_clock64() 2018-05-14 23:58:23 +01:00
mc146818rtc.h
mips_mt.h
mips-cm.h mips: cm: Convert to bitfield API to fix out-of-bounds access 2021-11-02 10:53:52 +01:00
mips-cpc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mips-cps.h MIPS: CPS: Use bitfield helpers 2021-11-29 12:43:06 +01:00
mips-gic.h Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-06-29 19:36:53 +08:00
mips-r2-to-r6-emul.h
mipsmtregs.h MIPS: remove asm/war.h 2022-02-22 09:35:49 +01:00
mipsprom.h
mipsregs.h MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT 2023-01-26 12:41:16 +09:00
mmiowb.h mips/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() 2019-04-08 12:00:28 +01:00
mmu_context.h mips: use asm-generic/mmu_context.h for no-op implementations 2020-10-27 16:02:36 +01:00
mmu.h MIPS: MemoryMapID (MMID) Support 2019-02-04 10:56:41 -08:00
mmzone.h mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA 2021-06-29 10:53:55 -07:00
module.h mips: Add MIPS Warrior P5600 support 2020-05-22 09:10:53 +02:00
msa.h MIPS: Avoid macro redefinitions 2021-09-23 11:23:35 +02:00
msc01_ic.h
paccess.h
page.h mm, arch: add generic implementation of pfn_valid() for FLATMEM 2023-02-09 16:51:41 -08:00
pci.h PCI: Remove pci_get_legacy_ide_irq() and asm-generic/pci.h 2022-07-22 17:23:45 -05:00
perf_event.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pgalloc.h MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init() 2022-12-11 18:12:11 -08:00
pgtable-32.h mips/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE 2023-02-02 22:33:08 -08:00
pgtable-64.h mips/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE 2023-02-02 22:33:08 -08:00
pgtable-bits.h MIPS: Don't clear _PAGE_SPECIAL in _PAGE_CHG_MASK 2023-04-24 09:48:51 +02:00
pgtable.h mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma() 2023-07-11 14:10:56 -07:00
pm-cps.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
prefetch.h
processor.h MIPS: Octeon: Allow CVMSEG to be disabled 2023-04-05 09:45:09 +02:00
prom.h MIPS: Fix wrong comments in asm/prom.h 2022-03-14 15:09:27 +01:00
ptrace.h Revert "MIPS: Add basic support for ptrace single step" 2021-02-18 11:57:44 +01:00
r4k-timer.h MIPS: Correct the header guard of r4k-timer.h 2020-09-18 15:29:00 +02:00
r4kcache.h MIPS: Fix build error due to PTR used in more places 2022-01-27 09:04:19 +01:00
reboot.h
reg.h
regdef.h
rtlx.h MIPS: Remove deprecated CONFIG_MIPS_CMP 2023-04-12 15:01:09 +02:00
seccomp.h seccomp: Use -1 marker for end of mode 1 syscall list 2020-07-10 16:01:52 -07:00
setup.h MIPS: fix fortify panic when copying asm exception handlers 2022-03-07 13:09:28 +01:00
sgialib.h MIPS: arc: use function argument for passing argc/argv to prom_init_cmdline 2019-10-23 21:10:34 -07:00
sgiarcs.h MIPS: fw: arc: use call_o32 to call ARC prom from 64bit kernel 2019-10-09 14:55:51 -07:00
shmparam.h
sigcontext.h
signal.h
sim.h MIPS: Remove nabi_no_regargs 2018-08-01 13:20:15 -07:00
smp-cps.h MIPS: smp-cps: Don't rely on CP0_CMGCRBASE 2023-02-27 23:44:57 +01:00
smp-ops.h MIPS: SMP_CPS: Switch to hotplug core state synchronization 2023-05-15 13:44:58 +02:00
smp.h MIPS: Rework smt cmdline parameters 2023-06-09 10:34:14 +02:00
sni.h MIPS: remove orphan sni_cpu_time_init() declaration 2022-09-19 16:36:55 +02:00
socket.h
sparsemem.h
spinlock_types.h
spinlock.h locking/arch: Move qrwlock.h include after qspinlock.h 2021-02-11 07:59:54 -05:00
spram.h MIPS: asm: spram: remove unneeded semicolon 2021-01-27 21:50:22 +01:00
stackframe.h MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
stackprotector.h stackprotector: actually use get_random_canary() 2022-11-18 02:18:10 +01:00
stacktrace.h
string.h MIPS: Drop 32-bit asm string functions 2019-10-09 12:48:05 -07:00
switch_to.h MIPS: context switch: Use save/restore instead of set/clear for Status.CU2 2020-09-21 22:14:47 +02:00
sync.h MIPS: cavium_octeon: Fix syncw generation. 2020-02-15 12:44:03 -08:00
syscall.h mips: fix syscall_get_nr 2023-02-19 09:28:30 +01:00
thread_info.h MIPS: Only use current_stack_pointer on GCC 2022-03-14 15:02:53 +01:00
time.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
timex.h mips: use fallback for random_get_entropy() instead of just c0 random 2022-05-13 23:59:23 +02:00
tlb.h arch/tlb: Clean up simple architectures 2019-04-03 10:32:54 +02:00
tlbdebug.h
tlbex.h MIPS: Consistently declare TLB functions 2018-08-10 17:27:53 -07:00
tlbflush.h MIPS: mm: Remove local_flush_tlb_mm() 2019-02-04 10:56:24 -08:00
tlbmisc.h
topology.h
traps.h MIPS: Allow modules to set board_be_handler 2021-11-09 16:07:26 +01:00
txx9irq.h MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
txx9pio.h
txx9tmr.h MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
types.h mips: Remove #include <uapi/asm/types.h> from <asm/types.h> 2020-11-11 23:45:46 +01:00
uaccess.h uaccess: generalize access_ok() 2022-02-25 09:36:05 +01:00
uasm.h mips, uasm: Add workaround for Loongson-2F nop CPU errata 2021-10-06 12:28:09 -07:00
unaligned-emul.h MIPS: Fix build error due to PTR used in more places 2022-01-27 09:04:19 +01:00
unistd.h fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT 2022-04-26 13:35:45 -07:00
unroll.h treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
uprobes.h
vdso.h mips: Add support for generic vDSO 2019-07-25 21:45:05 -07:00
vermagic.h MIPS: Remove VR41xx support 2022-07-14 11:52:29 +02:00
vga.h
vmalloc.h mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h> 2019-12-10 10:12:55 +01:00
vpe.h MIPS: Remove deprecated CONFIG_MIPS_CMP 2023-04-12 15:01:09 +02:00
watch.h
wbflush.h
yamon-dt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00