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linux-uconsole/arch/arc/include/asm
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Alexey Brodkin 16eff7f2f4 ARC: fix page address calculation if PAGE_OFFSET != LINUX_LINK_BASE 
commit 06f34e1c28 upstream.

We used to calculate page address differently in 2 cases:

1. In virt_to_page(x) we do
 --->8---
 mem_map + (x - CONFIG_LINUX_LINK_BASE) >> PAGE_SHIFT
 --->8---

2. In in pte_page(x) we do
 --->8---
 mem_map + (pte_val(x) - PAGE_OFFSET) >> PAGE_SHIFT
 --->8---

That leads to problems in case PAGE_OFFSET != CONFIG_LINUX_LINK_BASE -
different pages will be selected depending on where and how we calculate
page address.

In particular in the STAR 9000853582 when gdb attempted to read memory
of another process it got improper page in get_user_pages() because this
is exactly one of the places where we search for a page by pte_page().

The fix is trivial - we need to calculate page address similarly in both
cases.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-06 14:40:52 -08:00
..
arcregs.h ARC: Boot #2: Verbose Boot reporting / feature verification 2013-02-15 23:16:07 +05:30
asm-offsets.h
atomic.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
barrier.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
bitops.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
bug.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
cache.h ARC: [mm] Aliasing VIPT dcache support 4/4 2013-05-09 22:00:57 +05:30
cacheflush.h ARC: Use enough bits for determining page's cache color 2013-05-23 14:25:09 +05:30
checksum.h ARC: Checksum/byteorder/swab routines 2013-02-11 20:00:34 +05:30
clk.h ARC: [DeviceTree] Convert some Kconfig items to runtime values 2013-02-15 23:15:56 +05:30
cmpxchg.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
current.h ARC: [optim] Cache "current" in Register r25 2013-02-15 23:15:58 +05:30
defines.h ARC: Boot #2: Verbose Boot reporting / feature verification 2013-02-15 23:16:07 +05:30
delay.h ARC: Fix __udelay calculation 2013-10-18 07:45:45 -07:00
disasm.h ARC: disassembly (needed by kprobes/kgdb/unaligned-access-emul) 2013-02-15 23:16:04 +05:30
dma-mapping.h arc: fix dma_address assignment during dma_map_sg() 2013-03-19 15:34:53 +05:30
dma.h ARC: I/O and DMA Mappings 2013-02-15 23:15:54 +05:30
elf.h ARC: Remove SET_PERSONALITY (tracks cross-arch change) 2013-03-18 14:37:05 +05:30
entry.h ARC: Fix the typo in event identifier flags used by ptrace 2013-03-20 18:45:45 +05:30
exec.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
futex.h ARC: Futex support 2013-02-15 23:16:00 +05:30
io.h ARC: Add support for ioremap_prot API 2013-02-15 23:16:11 +05:30
irq.h ARC: Prepare interrupt code for external controllers 2013-05-07 13:43:58 +05:30
irqflags.h ARC: Entry Handler tweaks: Optimize away redundant IRQ_DISABLE_SAVE 2014-05-13 13:59:42 +02:00
Kbuild ARC: [mm] Aliasing VIPT dcache support 4/4 2013-05-09 22:00:57 +05:30
kdebug.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
kgdb.h ARC: Update order of registers in KGDB to match GDB 7.5 2014-11-14 08:47:57 -08:00
kprobes.h ARC: kprobes support 2013-02-15 23:16:05 +05:30
linkage.h ARC: Support for single cycle Close Coupled Mem (CCM) 2013-02-15 23:16:10 +05:30
mach_desc.h ARC: make a copy of flat DT 2013-02-26 14:25:18 +05:30
mmu.h ARC: MMU Context Management 2013-02-15 23:15:51 +05:30
mmu_context.h ARC: SMP support 2013-02-15 23:16:02 +05:30
module.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30
mutex.h ARC: SMP support 2013-02-15 23:16:02 +05:30
page.h ARC: lazy dcache flush broke gdb in non-aliasing configs 2013-05-25 14:15:55 +05:30
perf_event.h ARC: perf support (software counters only) 2013-02-15 23:16:09 +05:30
pgalloc.h ARC: Page Table Management 2013-02-15 23:15:51 +05:30
pgtable.h ARC: fix page address calculation if PAGE_OFFSET != LINUX_LINK_BASE 2015-03-06 14:40:52 -08:00
processor.h ARC: SMP support 2013-02-15 23:16:02 +05:30
prom.h ARC: [Review] Multi-platform image #2: Board callback Infrastructure 2013-02-15 23:16:13 +05:30
ptrace.h ARC: gdbserver breakage in Big-Endian configuration #1 2013-08-29 09:47:29 -07:00
sections.h ARC: SMP failed to boot due to missing IVT setup 2013-10-18 07:45:45 -07:00
segment.h ARC: uaccess friends 2013-02-11 20:00:31 +05:30
serial.h ARC: [TB10x] Add support for TB10x platform 2013-05-07 13:43:59 +05:30
setup.h ARC: UAPI Disintegrate arch/arc/include/asm 2013-02-15 23:16:11 +05:30
shmparam.h ARC: [mm] Aliasing VIPT dcache support 4/4 2013-05-09 22:00:57 +05:30
smp.h ARC: [Review] Multi-platform image #7: SMP common code to use callbacks 2013-02-15 23:16:16 +05:30
spinlock.h ARC: Workaround spinlock livelock in SMP SystemC simulation 2013-10-18 07:45:45 -07:00
spinlock_types.h ARC: Spinlock/rwlock/mutex primitives 2013-02-11 20:00:35 +05:30
string.h ARC: String library 2013-02-11 20:00:35 +05:30
switch_to.h ARC: Process-creation/scheduling/idle-loop 2013-02-11 20:00:38 +05:30
syscall.h ARC: gdbserver breakage in Big-Endian configuration #2 2013-08-29 09:47:29 -07:00
syscalls.h ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI 2013-03-11 19:01:10 +05:30
thread_info.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
timex.h ARC: Timers/counters/delay management 2013-02-11 20:00:39 +05:30
tlb-mmu1.h ARC: MMU Exception Handling 2013-02-15 23:15:52 +05:30
tlb.h ARC: copy_(to|from)_user() to honor usermode-access permissions 2013-05-23 10:33:03 +05:30
tlbflush.h ARC: TLB flush Handling 2013-02-15 23:15:53 +05:30
uaccess.h ARC: Fix 32-bit wrap around in access_ok() 2013-10-18 07:45:45 -07:00
unaligned.h ARC: Unaligned access emulation 2013-02-15 23:16:06 +05:30
unwind.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30