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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-24 12:45:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-24 12:45:47 -0700 |
| commit | 83da00fbc0c57ce6f84455156a2e3cc057fe7344 (patch) | |
| tree | fac652b63aac0bfade55cd8113afe668f00c9cd8 /arch/sparc/kernel/trampoline_64.S | |
| parent | 96971e9aa9578322648b2de593fd4863f3d9fc39 (diff) | |
| parent | 06090e8ed89ea2113a236befb41f71d51f100e60 (diff) | |
| download | talos-obmc-linux-83da00fbc0c57ce6f84455156a2e3cc057fe7344.tar.gz talos-obmc-linux-83da00fbc0c57ce6f84455156a2e3cc057fe7344.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull two sparc fixes from David Miller:
1) Fix boots with gcc-4.9 compiled sparc64 kernels.
2) Add missing __get_user_pages_fast() on sparc64 to fix hangs on
futexes used in transparent hugepage areas.
It's really idiotic to have a weak symbolled fallback that just
returns zero, and causes this kind of bug. There should be no
backup implementation and the link should fail if the architecture
fails to provide __get_user_pages_fast() and supports transparent
hugepages.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Implement __get_user_pages_fast().
sparc64: Fix register corruption in top-most kernel stack frame during boot.
Diffstat (limited to 'arch/sparc/kernel/trampoline_64.S')
| -rw-r--r-- | arch/sparc/kernel/trampoline_64.S | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S index 737f8cbc7d56..88ede1d53b4c 100644 --- a/arch/sparc/kernel/trampoline_64.S +++ b/arch/sparc/kernel/trampoline_64.S @@ -109,10 +109,13 @@ startup_continue: brnz,pn %g1, 1b nop - sethi %hi(p1275buf), %g2 - or %g2, %lo(p1275buf), %g2 - ldx [%g2 + 0x10], %l2 - add %l2, -(192 + 128), %sp + /* Get onto temporary stack which will be in the locked + * kernel image. + */ + sethi %hi(tramp_stack), %g1 + or %g1, %lo(tramp_stack), %g1 + add %g1, TRAMP_STACK_SIZE, %g1 + sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp flushw /* Setup the loop variables: @@ -394,7 +397,6 @@ after_lock_tlb: sllx %g5, THREAD_SHIFT, %g5 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 add %g6, %g5, %sp - mov 0, %fp rdpr %pstate, %o1 or %o1, PSTATE_IE, %o1 |
