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Christophe Leroy 33fe43cfd9 powerpc/8xx: Manage _PAGE_ACCESSED through APG bits in L1 entry 
When _PAGE_ACCESSED is not set, a minor fault is expected.
To do this, TLB miss exception ANDs _PAGE_PRESENT and _PAGE_ACCESSED
into the L2 entry valid bit.

To simplify the processing and reduce the number of instructions in
TLB miss exceptions, manage it as an APG bit and get it next to
_PAGE_GUARDED bit to allow a copy in one go. Then declare the
corresponding groups as handling all accesses as user accesses.
As the PP bits always define user as No Access, it will generate
a fault.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/80f488db230c6b0e7b3b990d72bd94a8a069e93e.1602492856.git.christophe.leroy@csgroup.eu
2020-11-05 23:34:25 +11:00
..
ptrace
powerpc/watchpoint/ptrace: Introduce PPC_DEBUG_FEATURE_DATA_BP_ARCH_31
2020-09-15 22:13:20 +10:00
syscalls
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2020-10-18 09:27:10 -07:00
trace
powerpc: Add a ppc_inst_as_str() helper
2020-07-23 17:41:36 +10:00
vdso32
Kbuild updates for v5.10
2020-10-22 13:13:57 -07:00
vdso64
Kbuild updates for v5.10
2020-10-22 13:13:57 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
align.c
powerpc: Use fallthrough pseudo-keyword
2020-07-29 21:09:37 +10:00
asm-offsets.c
powerpc/tm: Save and restore AMR on treclaim and trechkpt
2020-10-06 23:22:25 +11:00
audit.c
…
btext.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
cacheinfo.c
powerpc/cacheinfo: Warn if cache object chain becomes unordered
2020-07-30 22:53:48 +10:00
cacheinfo.h
powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
2019-06-15 16:52:06 +10:00
compat_audit.c
…
cpu_setup_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
cpu_setup_44x.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu_setup_fsl_booke.S
powerpc/booke: Spelling s/date/data/
2019-11-17 01:56:31 -06:00
cpu_setup_pa6t.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
cpu_setup_power.S
powerpc/perf: Initialize power10 PMU registers in cpu setup routine
2020-07-26 23:34:23 +10:00
cpu_setup_ppc970.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cputable.c
powerpc/64s: Remove TM from Power10 features
2020-10-20 23:33:51 +11:00
crash_dump.c
powerpc: Add prefixed instructions to instruction data type
2020-05-19 00:10:39 +10:00
dawr.c
powerpc/watchpoint: Guest support for 2nd DAWR hcall
2020-07-26 23:34:19 +10:00
dbell.c
powerpc: Inline doorbell sending functions
2020-07-29 21:02:09 +10:00
dma-iommu.c
dma-mapping: add a new dma_alloc_pages API
2020-09-25 06:20:47 +02:00
dma-mask.c
dma-mapping, powerpc: simplify the arch dma_set_mask override
2019-02-18 22:41:03 +11:00
dma-swiotlb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dt_cpu_ftrs.c
powerpc: untangle cputable mce include
2020-10-06 23:22:22 +11:00
early_32.c
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
eeh_cache.c
powerpc/eeh_cache: Fix a possible debugfs deadlock
2020-11-02 12:54:20 +11:00
eeh_driver.c
pci-v5.9-changes
2020-08-07 18:48:15 -07:00
eeh_event.c
powerpc/eeh: Fix build with STACKTRACE=n
2019-09-14 00:01:14 +10:00
eeh_pe.c
powerpc/eeh: Delete eeh_pe->config_addr
2020-10-07 22:34:47 +11:00
eeh_sysfs.c
powerpc/eeh: Pass eeh_dev to eeh_ops->resume_notify()
2020-07-26 23:34:20 +10:00
eeh.c
powerpc/eeh: Fix eeh_dev_check_failure() for PE#0
2020-10-22 10:38:53 +11:00
entry_32.S
powerpc: Remove support for PowerPC 601
2020-10-08 21:17:13 +11:00
entry_64.S
powerpc/security: Fix link stack flush instruction
2020-10-08 12:50:52 +11:00
epapr_hcalls.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
epapr_paravirt.c
powerpc: Use a datatype for instructions
2020-05-19 00:10:37 +10:00
exceptions-64e.S
powerpc/64e: remove 64s specific interrupt soft-mask code
2020-10-06 23:22:23 +11:00
exceptions-64s.S
powerpc updates for 5.9
2020-08-07 10:33:50 -07:00
fadump.c
powerpc updates for 5.10
2020-10-16 12:21:15 -07:00
firmware.c
powerpc/pseries: Add KVM guest doorbell restrictions
2020-07-29 21:02:10 +10:00
fpu.S
powerpc: Drop SYNC_601() ISYNC_601() and SYNC()
2020-10-08 21:17:13 +11:00
fsl_booke_entry_mapping.S
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
head_8xx.S
powerpc/8xx: Manage _PAGE_ACCESSED through APG bits in L1 entry
2020-11-05 23:34:25 +11:00
head_32.h
powerpc: Drop SYNC_601() ISYNC_601() and SYNC()
2020-10-08 21:17:13 +11:00
head_40x.S
powerpc/40x: Always fault when _PAGE_ACCESSED is not set
2020-11-05 23:34:16 +11:00
head_44x.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
head_64.S
powerpc/64: Remove unused generic_secondary_thread_init()
2020-09-08 22:24:17 +10:00
head_book3s_32.S
powerpc/603: Always fault when _PAGE_ACCESSED is not set
2020-11-05 23:34:07 +11:00
head_booke.h
powerpc: Remove SYNC on non 6xx
2020-10-08 21:17:12 +11:00
head_fsl_booke.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
hw_breakpoint_constraints.c
powerpc/watchpoint: Move DAWR detection logic outside of hw_breakpoint.c
2020-09-15 22:13:19 +10:00
hw_breakpoint.c
powerpc/watchpoint: Move DAWR detection logic outside of hw_breakpoint.c
2020-09-15 22:13:19 +10:00
idle_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
idle_book3e.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
idle_book3s.S
powerpc/64s: Reimplement power4_idle code in C
2020-01-16 14:59:37 +10:00
idle_e500.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
idle.c
powerpc: Move arch_cpu_idle_dead() into smp.c
2020-09-18 19:59:43 +10:00
ima_arch.c
powerpc/ima: Fix secure boot rules in ima arch policy
2020-05-07 17:25:54 +10:00
io-workarounds.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
io.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
iomap.c
iomap: constify ioreadX() iomem argument (as in generic implementation)
2020-08-14 19:56:57 -07:00
iommu.c
dma-mapping: introduce dma_get_seg_boundary_nr_pages()
2020-09-03 18:12:15 +02:00
irq.c
powerpc: Remove get_tb_or_rtc()
2020-10-08 21:17:14 +11:00
isa-bridge.c
powerpc: remove __ioremap_at and __iounmap_at
2020-06-02 10:59:10 -07:00
jump_label.c
powerpc: Use a datatype for instructions
2020-05-19 00:10:37 +10:00
kgdb.c
maccess: make get_kernel_nofault() check for minimal type compatibility
2020-06-18 12:10:37 -07:00
kprobes-ftrace.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
kprobes.c
powerpc: kprobes: Use generic kretprobe trampoline handler
2020-09-08 11:52:34 +02:00
kvm_emul.S
powerpc/kvm: Add ifdefs around template code
2019-09-14 00:04:40 +10:00
kvm.c
powerpc/kvm: Explicitly mark kvm guest code as __init
2019-09-14 00:04:40 +10:00
l2cr_6xx.S
powerpc: Drop SYNC_601() ISYNC_601() and SYNC()
2020-10-08 21:17:13 +11:00
legacy_serial.c
tty/serial: Migrate 8250_fsl to use has_sysrq
2019-12-18 15:04:42 +01:00
Makefile
powerpc/32s: Rename head_32.S to head_book3s_32.S
2020-10-08 21:17:14 +11:00
mce_power.c
powerpc/powernv: Machine check handler for POWER10
2020-07-23 17:43:30 +10:00
mce.c
powerpc/mce: Avoid nmi_enter/exit in real mode on pseries hash
2020-10-16 20:13:55 +11:00
misc_32.S
powerpc: Rewrite FSL_BOOKE flush_cache_instruction() in C
2020-09-02 11:00:21 +10:00
misc_64.S
powerpc: Remove SYNC on non 6xx
2020-10-08 21:17:12 +11:00
misc.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
module_32.c
powerpc: module_[32|64].c: replace swap function with built-in one
2020-05-11 23:15:14 +10:00
module_64.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
module.c
powerpc: Use MODULES_VADDR if defined
2020-07-27 00:01:30 +10:00
msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
note.S
powerpc: Add PowerPC Capabilities ELF note
2019-08-30 09:40:15 +10:00
nvram_64.c
powerpc updates for 5.8
2020-06-05 12:39:30 -07:00
of_platform.c
powerpc/eeh: Remove eeh_dev_phb_init_dynamic()
2020-07-26 23:34:19 +10:00
optprobes_head.S
powerpc: Add prefixed instructions to instruction data type
2020-05-19 00:10:39 +10:00
optprobes.c
powerpc: Add ppc_inst_as_u64()
2020-05-26 23:36:57 +10:00
paca.c
Merge branch 'fixes' into next
2020-07-18 22:43:55 +10:00
pci_32.c
powerpc/64: Adjust order in pcibios_init()
2019-08-22 23:11:48 +10:00
pci_64.c
powerpc updates for 5.8
2020-06-05 12:39:30 -07:00
pci_dn.c
powerpc/eeh: Rename eeh_{add_to|remove_from}_parent_pe()
2020-07-26 23:34:21 +10:00
pci_of_scan.c
powerpc/pci: Remove pcibios_setup_bus_devices()
2020-01-06 16:25:29 +11:00
pci-common.c
Revert "powerpc/pci: unmap legacy INTx interrupts when a PHB is removed"
2020-10-15 13:42:49 +11:00
pci-hotplug.c
powerpc/eeh: Release EEH device state synchronously
2020-05-18 21:58:44 +10:00
pmc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc32.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc_save_regs.S
powerpc: Improve ppc_save_regs()
2020-04-04 21:40:57 +11:00
proc_powerpc.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
process.c
powerpc/process: Fix uninitialised variable error
2020-09-18 18:12:46 +10:00
prom_init_check.sh
powerpc/prom_init: Undo relocation before entering secure mode
2019-10-29 15:12:17 +11:00
prom_init.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
prom_parse.c
…
prom.c
powerpc/mm/book3s: Split radix and hash MAX_PHYSMEM limit
2020-09-15 22:13:22 +10:00
reloc_32.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
reloc_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtas_flash.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
rtas_pci.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
rtas-proc.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
rtas-rtc.c
powerpc: use time64_t in read_persistent_clock
2018-06-03 20:43:33 +10:00
rtas.c
powerpc/rtas: Restrict RTAS requests from userspace
2020-10-06 23:22:27 +11:00
rtasd.c
powerpc/rtasd: simplify handle_rtas_event(), emit message on events
2020-07-16 13:12:38 +10:00
secure_boot.c
powerpc/pseries: Detect secure and trusted boot state of the system.
2020-07-16 14:49:53 +10:00
security.c
powerpc/security: Fix link stack flush instruction
2020-10-08 12:50:52 +11:00
secvar-ops.c
powerpc/powernv: Add OPAL API interface to access secure variable
2019-11-13 00:33:22 +11:00
secvar-sysfs.c
powerpc: expose secure variables to userspace via sysfs
2019-11-13 00:33:22 +11:00
setup_32.c
powerpc: Remove support for PowerPC 601
2020-10-08 21:17:13 +11:00
setup_64.c
powerpc/64/mm: implement page mapping percpu first chunk allocator
2020-09-15 22:13:22 +10:00
setup-common.c
powerpc: Fix P10 PVR revision in /proc/cpuinfo for SMT4 cores
2020-08-17 13:11:22 +10:00
setup.h
powerpc/64: Prevent stack protection in early boot
2020-03-25 12:09:38 +11:00
signal_32.c
powerpc/signal_32: Simplify loop in PPC64 save_general_regs()
2020-07-15 12:04:40 +10:00
signal_64.c
powerpc/signal64: Don't opencode page prefaulting
2020-07-15 12:04:40 +10:00
signal.c
arch-cleanup-2020-10-22
2020-10-23 10:06:38 -07:00
signal.h
powerpc/64/sycall: Implement syscall entry/exit logic in C
2020-04-01 13:42:13 +11:00
smp-tbsync.c
…
smp.c
powerpc/smp: Call rcu_cpu_starting() earlier
2020-11-02 12:54:20 +11:00
stacktrace.c
kernel: rename show_stack_loglvl() => show_stack()
2020-06-09 09:39:13 -07:00
suspend.c
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
swsusp_32.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
swsusp_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
2019-06-19 17:11:22 +02:00
swsusp_asm64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
2019-06-19 17:11:22 +02:00
swsusp_booke.S
…
swsusp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sys_ppc32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
syscall_64.c
Merge branch 'scv' support into next
2020-07-23 17:43:44 +10:00
syscalls.c
y2038: syscalls: change remaining timeval to __kernel_old_timeval
2019-11-15 14:38:29 +01:00
sysfs.c
powerpc/sysfs: Remove unused 'err' variable in sysfs_create_dscr_default()
2020-09-18 20:05:24 +10:00
systbl_chk.sh
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
systbl.S
powerpc/64/sycall: Implement syscall entry/exit logic in C
2020-04-01 13:42:13 +11:00
tau_6xx.c
powerpc/tau: Disable TAU between measurements
2020-09-15 22:13:30 +10:00
time.c
powerpc/time: Avoid using get_tbl() and get_tbu() internally
2020-10-08 21:17:15 +11:00
tm.S
powerpc/tm: Save and restore AMR on treclaim and trechkpt
2020-10-06 23:22:25 +11:00
traps.c
powerpc: Fix undetected data corruption with P9N DD2.1 VSX CI load emulation
2020-10-20 07:59:21 +11:00
ucall.S
powerpc/kernel: Add ucall_norets() ultravisor call handler
2019-08-30 09:40:15 +10:00
udbg_16550.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
udbg.c
powerpc/udbg: Make it safe to call udbg_printf() always
2019-10-11 19:33:25 +11:00
uprobes.c
powerpc: Add ppc_inst_next()
2020-05-26 23:36:51 +10:00
vdso.c
powerpc/vdso: Fix vdso cpu truncation
2020-07-16 13:12:47 +10:00
vecemu.c
powerpc: Define and use get_user_instr() et. al.
2020-05-19 00:10:37 +10:00
vector.S
powerpc: re-initialise lazy FPU/VEC counters on every fault
2020-07-16 13:00:24 +10:00
vmlinux.lds.S
vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG
2020-09-01 09:50:35 +02:00
watchdog.c
powerpc/watchdog: Use hrtimers for per-CPU heartbeat
2019-04-30 11:31:02 +10:00