Michael Ellerman e41e53cd4f powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash ... virt_addr_valid() is supposed to tell you if it's OK to call virt_to_page() on an address. What this means in practice is that it should only return true for addresses in the linear mapping which are backed by a valid PFN. We are failing to properly check that the address is in the linear mapping, because virt_to_pfn() will return a valid looking PFN for more or less any address. That bug is actually caused by __pa(), used in virt_to_pfn(). eg: __pa(0xc000000000010000) = 0x10000 # Good __pa(0xd000000000010000) = 0x10000 # Bad! __pa(0x0000000000010000) = 0x10000 # Bad! This started happening after commit bdbc29c19b ("powerpc: Work around gcc miscompilation of __pa() on 64-bit") (Aug 2013), where we changed the definition of __pa() to work around a GCC bug. Prior to that we subtracted PAGE_OFFSET from the value passed to __pa(), meaning __pa() of a 0xd or 0x0 address would give you something bogus back. Until we can verify if that GCC bug is no longer an issue, or come up with another solution, this commit does the minimal fix to make virt_addr_valid() work, by explicitly checking that the address is in the linear mapping region. Fixes: bdbc29c19b ("powerpc: Work around gcc miscompilation of __pa() on 64-bit") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Balbir Singh <bsingharora@gmail.com> Tested-by: Breno Leitao <breno.leitao@gmail.com>		2017-05-19 13:04:35 +10:00
..
book3s	powerpc/mm/book3s/64: Rework page table geometry for lower memory usage	2017-05-09 19:24:23 +10:00
nohash	powerpc/mm/nohash: MM_SLICE is only used by book3s 64	2017-03-31 23:09:47 +11:00
8xx_immap.h	…
Kbuild	…
accounting.h	sched/cputime, powerpc: Prepare accounting structure for cputime flush on tick	2017-01-14 09:54:12 +01:00
agp.h	…
archrandom.h	…
asm-compat.h	…
asm-offsets.h	…
asm-prototypes.h	powerpc: Fix missing CRCs, add more asm-prototypes.h declarations	2017-03-21 22:09:26 +11:00
async_tx.h	…
atomic.h	…
backlight.h	…
barrier.h	…
bitops.h	powerpc: Add more PPC bit conversion macros	2017-04-06 19:58:53 +10:00
bootx.h	…
btext.h	…
bug.h	debug: Add _ONCE() logic to report_bug()	2017-03-30 09:37:20 +02:00
bugs.h	…
cache.h	powerpc: Add new cache geometry aux vectors	2017-02-06 19:46:04 +11:00
cacheflush.h	…
cell-pmu.h	…
cell-regs.h	…
checksum.h	powerpc/64: Fix checksum folding in csum_add()	2017-03-04 23:07:17 +11:00
cmpxchg.h	…
code-patching.h	powerpc: Introduce a new helper to obtain function entry points	2017-04-24 19:07:58 +10:00
compat.h	…
context_tracking.h	…
copro.h	…
cpm.h	…
cpm1.h	powerpc/8xx: Adding support of IRQ in MPC8xx GPIO	2017-05-02 22:35:00 -05:00
cpm2.h	…
cpu_has_feature.h	powerpc/64s: Support new device tree binding for discovering CPU features	2017-05-09 23:42:55 +10:00
cpufeature.h	…
cpuidle.h	powerpc/64s: Idle POWER8 avoid full state loss recovery where possible	2017-04-23 20:32:12 +10:00
cputable.h	powerpc/64s: Support new device tree binding for discovering CPU features	2017-05-09 23:42:55 +10:00
cputhreads.h	…
cputime.h	sched/cputime: Remove generic asm headers	2017-02-01 09:14:07 +01:00
current.h	…
dbdma.h	…
dbell.h	powerpc/powernv: POWER9 support for msgsnd/doorbell IPI	2017-04-13 23:34:34 +10:00
dcr-generic.h	…
dcr-mmio.h	…
dcr-native.h	…
dcr-regs.h	…
dcr.h	…
debug.h	powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there	2017-04-11 07:46:03 +10:00
debugfs.h	powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there	2017-04-11 07:46:03 +10:00
delay.h	…
device.h	treewide: Move dma_ops from struct dev_archdata into struct device	2017-01-24 12:23:35 -05:00
disassemble.h	KVM: PPC: Book3S: Add MMIO emulation for FP and VSX instructions	2017-04-20 11:36:41 +10:00
dma-mapping.h	treewide: Consolidate get_dma_ops() implementations	2017-01-24 12:23:35 -05:00
dma.h	…
dt_cpu_ftrs.h	powerpc/64s: Support new device tree binding for discovering CPU features	2017-05-09 23:42:55 +10:00
edac.h	…
eeh.h	…
eeh_event.h	…
ehv_pic.h	…
elf.h	powerpc/64: Fix L1D cache shape vector reporting L1I values	2017-03-06 21:51:32 +11:00
emergency-restart.h	…
emulated_ops.h	…
epapr_hcalls.h	…
exception-64e.h	…
exception-64s.h	powerpc updates for 4.12 part 1.	2017-05-05 11:36:44 -07:00
exec.h	…
extable.h	powerpc: switch to extable.h	2017-03-28 18:23:54 -04:00
fadump.h	powerpc/fadump: remove dependency with CONFIG_KEXEC	2017-05-08 17:15:11 -07:00
fb.h	…
feature-fixups.h	powerpc/64s: Simplify POWER9 DD1 idle workaround code	2017-04-23 20:32:23 +10:00
firmware.h	powerpc/pseries: Add hypercall wrappers for hash page table resizing	2017-02-09 21:45:48 +11:00
fixmap.h	…
floppy.h	…
fs_pd.h	…
fsl_85xx_cache_sram.h	…
fsl_gtm.h	…
fsl_hcalls.h	scripts/spelling.txt: add "partiton" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
fsl_lbc.h	…
fsl_pamu_stash.h	…
fsl_pm.h	…
ftrace.h	…
futex.h	…
grackle.h	…
hardirq.h	…
head-64.h	powerpc/kprobes: Blacklist common exception handlers	2017-04-23 20:32:26 +10:00
heathrow.h	…
highmem.h	…
hmi.h	…
hugetlb.h	powerpc/mm: Fix little-endian 4K hugetlb	2017-01-18 11:58:50 +11:00
hvcall.h	powerpc/pseries: Move struct hcall_stats to hvCall_inst.c	2017-03-20 19:02:49 +11:00
hvconsole.h	…
hvcserver.h	…
hvsi.h	…
hw_breakpoint.h	…
hw_irq.h	…
hydra.h	…
i8259.h	…
ibmebus.h	…
icswx.h	…
ide.h	…
ima.h	powerpc: ima: send the kexec buffer to the next kernel	2016-12-20 09:48:44 -08:00
immap_cpm2.h	…
io-defs.h	…
io-workarounds.h	…
io.h	powerpc/mm: Wire up ioremap_cache()	2017-04-21 21:08:47 +10:00
io_event_irq.h	…
iommu.h	KVM: PPC: iommu: Unify TCE checking	2017-04-20 11:39:21 +10:00
ipic.h	…
irq.h	…
irq_work.h	…
irqflags.h	…
isa-bridge.h	powerpc: Add support for non-PCI ISA bridges	2017-01-31 13:54:17 +11:00
jump_label.h	…
kdebug.h	…
kdump.h	…
kexec.h	powerpc: ima: send the kexec buffer to the next kernel	2016-12-20 09:48:44 -08:00
keylargo.h	…
kgdb.h	…
kmap_types.h	…
kprobes.h	powerpc/kprobes: Add support for KPROBES_ON_FTRACE	2017-04-24 19:07:58 +10:00
kvm_asm.h	…
kvm_book3s.h	KVM: PPC: Book3S HV: Enable radix guest support	2017-01-31 19:11:52 +11:00
kvm_book3s_32.h	…
kvm_book3s_64.h	powerpc/pseries: Skip using reserved virtual address range	2017-04-01 21:12:27 +11:00
kvm_book3s_asm.h	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
kvm_booke.h	…
kvm_booke_hv_asm.h	…
kvm_fpu.h	…
kvm_host.h	Merge remote-tracking branch 'remotes/powerpc/topic/xive' into kvm-ppc-next	2017-04-28 08:23:16 +10:00
kvm_para.h	…
kvm_ppc.h	* ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU	2017-05-08 12:37:56 -07:00
libata-portmap.h	…
linkage.h	…
livepatch.h	powerpc/livepatch: Remove klp_write_module_reloc() stub	2016-12-19 11:15:25 +01:00
local.h	…
lppaca.h	…
lv1call.h	…
machdep.h	powerpc/powernv: Override pcibios_default_alignment() to force PCI devices to be page aligned	2017-04-19 12:51:26 -05:00
macio.h	…
mc146818rtc.h	…
mce.h	powerpc/book3s: Print task info if we take a machine check in user mode	2017-04-03 16:12:00 +10:00
mediabay.h	…
mm-arch-hooks.h	…
mman.h	…
mmu-8xx.h	…
mmu-40x.h	…
mmu-44x.h	…
mmu-book3e.h	powerpc/mm/nohash: MM_SLICE is only used by book3s 64	2017-03-31 23:09:47 +11:00
mmu.h	powerpc/mm/hash: Support 68 bit VA	2017-03-31 23:10:00 +11:00
mmu_context.h	powerpc updates for 4.12 part 1.	2017-05-05 11:36:44 -07:00
mmzone.h	…
module.h	powerpc/modules: If mprofile-kernel is enabled add it to vermagic	2017-05-15 19:31:38 +10:00
mpc5xxx.h	…
mpc6xx.h	…
mpc52xx.h	…
mpc52xx_psc.h	…
mpc85xx.h	…
mpc5121.h	…
mpc8260.h	…
mpic.h	…
mpic_msgr.h	…
mpic_timer.h	…
msi_bitmap.h	…
nmi.h	…
nvram.h	…
ohare.h	…
opal-api.h	Merge branch 'topic/xive' (early part) into next	2017-04-12 22:31:37 +10:00
opal.h	Merge branch 'topic/xive' (early part) into next	2017-04-12 22:31:37 +10:00
oprofile_impl.h	…
paca.h	powerpc/64s: Dedicated system reset interrupt stack	2017-04-28 21:02:25 +10:00
page.h	powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash	2017-05-19 13:04:35 +10:00
page_32.h	…
page_64.h	powerpc/mm/slice: Move slice_mask struct definition to slice.c	2017-03-31 23:09:56 +11:00
parport.h	…
pasemi_dma.h	…
pci-bridge.h	powerpc: Move isa bridge definitions to separate include	2017-01-31 13:54:17 +11:00
pci.h	PCI: Add arch_can_pci_mmap_io() on architectures which can mmap() I/O space	2017-04-18 13:02:26 -05:00
percpu.h	…
perf_event.h	…
perf_event_fsl_emb.h	…
perf_event_server.h	powerpc/perf: Support to export MMCRA[TEC*] field to userspace	2017-04-19 20:00:22 +10:00
pgalloc.h	…
pgtable-be-types.h	powerpc/mm: Fix little-endian 4K hugetlb	2017-01-18 11:58:50 +11:00
pgtable-types.h	powerpc/mm: Fix little-endian 4K hugetlb	2017-01-18 11:58:50 +11:00
pgtable.h	…
plpar_wrappers.h	powerpc/pseries: Add hypercall wrappers for hash page table resizing	2017-02-09 21:45:48 +11:00
pmac_feature.h	…
pmac_low_i2c.h	…
pmac_pfunc.h	…
pmc.h	…
pmi.h	…
pnv-pci.h	drivers/pci/hotplug: Mask PDC interrupt if required	2017-02-15 20:02:43 +11:00
powernv.h	powerpc/powernv: Introduce address translation services for Nvlink2	2017-04-04 13:27:26 +10:00
ppc-opcode.h	* ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU	2017-05-08 12:37:56 -07:00
ppc-pci.h	…
ppc4xx.h	…
ppc4xx_ocm.h	…
ppc_asm.h	powerpc/32: Remove FIX_SRR1	2017-01-26 17:49:32 -06:00
probes.h	…
processor.h	powerpc/64e: Don't place the stack beyond TASK_SIZE	2017-05-05 01:22:06 -05:00
prom.h	powerpc: Update to new option-vector-5 format for CAS	2017-03-06 21:44:09 +11:00
ps3.h	treewide: Consolidate get_dma_ops() implementations	2017-01-24 12:23:35 -05:00
ps3av.h	…
ps3gpu.h	…
ps3stor.h	…
pte-common.h	…
ptrace.h	…
reg.h	powerpc/64s: Support new device tree binding for discovering CPU features	2017-05-09 23:42:55 +10:00
reg_8xx.h	powerpc/8xx: Perf events on PPC 8xx	2017-01-26 17:49:34 -06:00
reg_a2.h	…
reg_booke.h	…
reg_fsl_emb.h	…
rheap.h	…
rio.h	…
rtas.h	powerpc/pseries: Implement indexed-count hotplug memory add	2017-02-17 17:57:30 +11:00
runlatch.h	…
scom.h	…
seccomp.h	…
sections.h	powerpc/kprobes: Blacklist exception handlers	2017-04-23 20:32:25 +10:00
serial.h	…
setjmp.h	…
setup.h	…
sfp-machine.h	…
shmparam.h	…
signal.h	…
smp.h	powerpc: Add struct smp_ops_t.cause_nmi_ipi operation	2017-04-28 21:02:25 +10:00
smu.h	…
sparsemem.h	powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y	2017-02-15 19:58:39 +11:00
spinlock.h	…
spinlock_types.h	…
spu.h	…
spu_csa.h	…
spu_info.h	…
spu_priv1.h	…
sstep.h	…
string.h	…
swab.h	…
swiotlb.h	treewide: Constify most dma_map_ops structures	2017-01-24 12:23:35 -05:00
switch_to.h	…
synch.h	…
syscall.h	…
syscalls.h	powerpc/tracing: Allow tracing of mmap syscalls	2017-04-12 22:32:43 +10:00
systbl.h	powerpc: Wire up statx() syscall	2017-03-16 20:45:53 +11:00
tce.h	…
termios.h	…
thread_info.h	powerpc updates for 4.12 part 1.	2017-05-05 11:36:44 -07:00
time.h	…
timex.h	…
tlb.h	…
tlbflush.h	…
tm.h	…
topology.h	…
trace.h	…
trace_clock.h	…
tsi108.h	…
tsi108_irq.h	…
tsi108_pci.h	…
types.h	…
uaccess.h	powerpc: get rid of zeroing, switch to RAW_COPY_USER	2017-04-06 15:08:42 -04:00
udbg.h	…
uic.h	…
unaligned.h	…
uninorth.h	…
unistd.h	powerpc: Wire up statx() syscall	2017-03-16 20:45:53 +11:00
uprobes.h	…
user.h	…
vdso.h	…
vdso_datapage.h	…
vga.h	…
vio.h	…
word-at-a-time.h	…
xics.h	powerpc: Change the doorbell IPI calling convention	2017-04-13 23:34:33 +10:00
xilinx_intc.h	…
xilinx_pci.h	…
xive-regs.h	powerpc/xive: Native exploitation of the XIVE interrupt controller	2017-04-10 21:41:34 +10:00
xive.h	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
xmon.h	powerpc/xive: Native exploitation of the XIVE interrupt controller	2017-04-10 21:41:34 +10:00
xor.h	…