linux-toradex.git/arch/arc, branch v3.14.37

ARC: Fix KSTK_ESP()

2015-03-18T12:31:31+00:00

commit 13648b0118a24f4fc76c34e6c7b6ccf447e46a2a upstream.

/proc//maps currently don't annotate stack vma with "[stack]"
This is because KSTK_ESP ie expected to return usermode SP of tsk while
currently it returns the kernel mode SP of a sleeping tsk.

While the fix is trivial, we also need to adjust the ARC kernel stack
unwinder to not use KSTK_SP and friends any more.

Reported-and-suggested-by: Alexey Brodkin 
Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: fix page address calculation if PAGE_OFFSET != LINUX_LINK_BASE

2015-03-06T22:43:31+00:00

commit 06f34e1c28f3608b0ce5b310e41102d3fe7b65a1 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 
Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: Fix build breakage for !CONFIG_ARC_DW2_UNWIND

2015-01-30T01:40:50+00:00

commit ba25915fb2cd18152cb14b144dbe8bf2f2bd8e45 upstream.

Fixes: ec7ac6afd07b (ARC: switch to generic ENTRY/END assembler annotations)
Reported-by: Anton Kolesov 
Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: Delete stale barrier.h

2015-01-30T01:40:50+00:00

commit 64ee9f32c33cbd53545284742e73c17fedf9d429 upstream.

Commit 93ea02bb8435 ("arch: Clean up asm/barrier.h implementations")
wired generic barrier.h for ARC, but failed to delete the existing file.

In 3.15, due to rcupdate.h updates, this causes a build breakage on ARC:

      CC      arch/arc/kernel/asm-offsets.s
    In file included from include/linux/sched.h:45:0,
                     from arch/arc/kernel/asm-offsets.c:9:
    include/linux/rculist.h: In function __list_add_rcu:
    include/linux/rculist.h:54:2: error: implicit declaration of function smp_store_release [-Werror=implicit-function-declaration]
      rcu_assign_pointer(list_next_rcu(prev), new);
      ^

Cc: Peter Zijlstra 
Signed-off-by: Vineet Gupta 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

ARC: switch to generic ENTRY/END assembler annotations

2015-01-27T16:18:54+00:00

commit ec7ac6afd07b2d958aab9dfc0a686300b856922a upstream.

With commit 9df62f054406 "arch: use ASM_NL instead of ';'" the generic
macros can handle the arch specific newline quirk. Hence we can get rid
of ARC asm macros and use the "C" style macros.

Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: [nsimosci] move peripherals to match model to FPGA

2015-01-27T16:18:54+00:00

commit e8ef060b37c2d3cc5fd0c0edbe4e42ec1cb9768b upstream.

This allows the sdplite/Zebu images to run on OSCI simulation platform

Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: Disable caches in early boot if so configured

2014-11-14T16:59:56+00:00

commit ef680cdc24376f394841a3f19b3a7ef6d57a009d upstream.

Requested-by: Noam Camus 
Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: fix mmuv2 warning

2014-11-14T16:59:56+00:00

commit d75386363ee60eb51c933c7b5e536f3a502ad7d7 upstream.

Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman

ARC: [SMP] General Fixes

2014-11-14T16:59:56+00:00

commit c3441edd2dea83923421fd6050d2ffdc57696323 upstream.

-Pass the expected arg to non-boot park'ing routine
 (It worked so far because existing SMP backends don't use the arg)

-CONFIG_DEBUG_PREEMPT warning

Signed-off-by: Greg Kroah-Hartman

ARC: Update order of registers in KGDB to match GDB 7.5

2014-11-14T16:59:56+00:00

commit ebc0c74e76cec9c4dd860eb0ca1c0b39dc63c482 upstream.

Order of registers has changed in GDB moving from 6.8 to 7.5. This patch
updates KGDB to work properly with GDB 7.5, though makes it incompatible
with 6.8.

Signed-off-by: Anton Kolesov 
Signed-off-by: Vineet Gupta 
Signed-off-by: Greg Kroah-Hartman