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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 14:52:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 14:52:21 -0700
commitd1447464789918db1e1a3d0aaf50d3d0f6487a4f (patch)
tree490bd5c493cdba742dc90d3731962226838e5f33 /arch/mips/kernel/octeon_switch.S
parent833e68340d108d88f4cb79b7d7223f6859d362ca (diff)
parent6ac5310e649df5fcd240d764503bf16a1317ea39 (diff)
downloadop-kernel-dev-d1447464789918db1e1a3d0aaf50d3d0f6487a4f.zip
op-kernel-dev-d1447464789918db1e1a3d0aaf50d3d0f6487a4f.tar.gz
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: "MIPS updates: - All the things that didn't make 3.10. - Removes the Windriver PPMC platform. Nobody will miss it. - Remove a workaround from kernel/irq/irqdomain.c which was there exclusivly for MIPS. Patch by Grant Likely. - More small improvments for the SEAD 3 platform - Improvments on the BMIPS / SMP support for the BCM63xx series. - Various cleanups of dead leftovers. - Platform support for the Cavium Octeon-based EdgeRouter Lite. Two large KVM patchsets didn't make it for this pull request because their respective authors are vacationing" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (124 commits) MIPS: Kconfig: Add missing MODULES dependency to VPE_LOADER MIPS: BCM63xx: CLK: Add dummy clk_{set,round}_rate() functions MIPS: SEAD3: Disable L2 cache on SEAD-3. MIPS: BCM63xx: Enable second core SMP on BCM6328 if available MIPS: BCM63xx: Add SMP support to prom.c MIPS: define write{b,w,l,q}_relaxed MIPS: Expose missing pci_io{map,unmap} declarations MIPS: Malta: Update GCMP detection. Revert "MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSET" MIPS: APSP: Remove <asm/kspd.h> SSB: Kconfig: Amend SSB_EMBEDDED dependencies MIPS: microMIPS: Fix improper definition of ISA exception bit. MIPS: Don't try to decode microMIPS branch instructions where they cannot exist. MIPS: Declare emulate_load_store_microMIPS as a static function. MIPS: Fix typos and cleanup comment MIPS: Cleanup indentation and whitespace MIPS: BMIPS: support booting from physical CPU other than 0 MIPS: Only set cpu_has_mmips if SYS_SUPPORTS_MICROMIPS MIPS: GIC: Fix gic_set_affinity infinite loop MIPS: Don't save/restore OCTEON wide multiplier state on syscalls. ...
Diffstat (limited to 'arch/mips/kernel/octeon_switch.S')
-rw-r--r--arch/mips/kernel/octeon_switch.S34
1 files changed, 7 insertions, 27 deletions
diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S
index 0e23343..4204d76 100644
--- a/arch/mips/kernel/octeon_switch.S
+++ b/arch/mips/kernel/octeon_switch.S
@@ -40,33 +40,6 @@
cpu_save_nonscratch a0
LONG_S ra, THREAD_REG31(a0)
- /* check if we need to save COP2 registers */
- PTR_L t2, TASK_THREAD_INFO(a0)
- LONG_L t0, ST_OFF(t2)
- bbit0 t0, 30, 1f
-
- /* Disable COP2 in the stored process state */
- li t1, ST0_CU2
- xor t0, t1
- LONG_S t0, ST_OFF(t2)
-
- /* Enable COP2 so we can save it */
- mfc0 t0, CP0_STATUS
- or t0, t1
- mtc0 t0, CP0_STATUS
-
- /* Save COP2 */
- daddu a0, THREAD_CP2
- jal octeon_cop2_save
- dsubu a0, THREAD_CP2
-
- /* Disable COP2 now that we are done */
- mfc0 t0, CP0_STATUS
- li t1, ST0_CU2
- xor t0, t1
- mtc0 t0, CP0_STATUS
-
-1:
#if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
/* Check if we need to store CVMSEG state */
mfc0 t0, $11,7 /* CvmMemCtl */
@@ -98,6 +71,13 @@
mtc0 t0, $11,7 /* CvmMemCtl */
#endif
3:
+
+#if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP)
+ PTR_L t8, __stack_chk_guard
+ LONG_L t9, TASK_STACK_CANARY(a1)
+ LONG_S t9, 0(t8)
+#endif
+
/*
* The order of restoring the registers takes care of the race
* updating $28, $29 and kernelsp without disabling ints.
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