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2011-02-28dt/powerpc: move of_bus_type infrastructure to ibmebusGrant Likely1-4/+400
arch/powerpc/kernel/ibmebus.c is the only remaining user of the of_bus_type support code for initializing the bus and registering drivers. All others have either been switched to the vanilla platform bus or already have their own infrastructure. This patch moves the functionality that ibmebus is using out of drivers/of/{platform,device}.c and into ibmebus.c where it is actually used. Also renames the moved symbols from of_platform_* to ibmebus_bus_* to reflect the actual usage. This patch is part of moving all of the of_platform_bus_type users over to the platform_bus_type. Signed-off-by: Grant Likely <[email protected]>
2011-02-28Merge commit 'v2.6.38-rc6' into devicetree/nextGrant Likely6-52/+94
Conflicts: drivers/spi/pxa2xx_spi_pci.c
2011-02-24Merge 2.6.38-rc6 into tty-nextGreg Kroah-Hartman6-52/+94
This was to resolve a merge issue with drivers/char/Makefile and drivers/tty/serial/68328serial.c Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-23Merge branch 'linus' into x86/platformThomas Gleixner6-52/+94
Reason: Import mainline device tree changes on which further patches depend on or conflict. Trivial conflict in: drivers/spi/pxa2xx_spi_pci.c Signed-off-by: Thomas Gleixner <[email protected]>
2011-02-17tty: add TIOCVHANGUP to allow clean tty shutdown of all ttysKay Sievers1-0/+1
This is useful for system management software so that it can kick off things like gettys and everything that's started from a tty, before we reuse it from/for something else or shut it down. Without this ioctl it would have to temporarily become the owner of the tty, then call vhangup() and then give it up again. Cc: Lennart Poettering <[email protected]> Signed-off-by: Kay Sievers <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-16Merge commit 'v2.6.38-rc5' into core/lockingIngo Molnar6-52/+94
Merge reason: pick up upstream fixes. Signed-off-by: Ingo Molnar <[email protected]>
2011-02-07powerpc: Fix hcall tracepoint recursionAnton Blanchard1-0/+37
Spinlocks on shared processor partitions use H_YIELD to notify the hypervisor we are waiting on another virtual CPU. Unfortunately this means the hcall tracepoints can recurse. The patch below adds a percpu depth and checks it on both the entry and exit hcall tracepoints. Signed-off-by: Anton Blanchard <[email protected]> Acked-by: Steven Rostedt <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]> CC: [email protected]
2011-02-07powerpc/numa: Fix bug in unmap_cpu_from_nodeAnton Blanchard1-1/+1
When converting to the new cpumask code I screwed up: - if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) { - cpu_clear(cpu, numa_cpumask_lookup_table[node]); + if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) { + cpumask_set_cpu(cpu, node_to_cpumask_map[node]); This was introduced in commit 25863de07af9 (powerpc/cpumask: Convert NUMA code to new cpumask API) Fix it. Signed-off-by: Anton Blanchard <[email protected]> Cc: <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/numa: Disable VPHN on dedicated processor partitionsAnton Blanchard1-1/+2
There is no need to start up the timer and monitor topology changes on a dedicated processor partition, so disable it. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/numa: Add length when creating OF properties via VPHNAnton Blanchard1-3/+9
The rest of the NUMA code expects an OF associativity property with the first cell containing the length. Without this fix all topology changes cause us to misparse the property and put the cpu into node 0. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/numa: Check for all VPHN changesAnton Blanchard1-1/+1
The hypervisor uses unsigned 1 byte counters to signal topology changes to the OS. Since they can wrap we need to check for any difference, not just if the hypervisor count is greater than the previous count. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/numa: Only use active VPHN count fieldsAnton Blanchard1-4/+6
VPHN supports up to 8 distance fields but the number of entries in ibm,associativity-reference-points signifies how many are in use. Don't look at all the VPHN counts, only distance_ref_points_depth worth. Since we already cap our distance metrics at MAX_DISTANCE_REF_POINTS, use that to size the VPHN arrays and add a BUILD_BUG_ON to avoid it growing larger than the VPHN maximum of 8. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/pseries: Remove unnecessary variable initializations in numa.cJesse Larrew1-9/+8
Remove unnecessary variable initializations in VPHN functions. Signed-off-by: Jesse Larrew <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/pseries: Fix brace placement in numa.cJesse Larrew1-6/+3
Fix brace placement in VPHN code. Signed-off-by: Jesse Larrew <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/pseries: Fix typo in VPHN commentsJesse Larrew1-1/+1
Correct a spelling error in VPHN comments in numa.c. Signed-off-by: Jesse Larrew <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc: Fix some 6xx/7xxx CPU setup functionsBenjamin Herrenschmidt1-20/+20
Some of those functions try to adjust the CPU features, for example to remove NAP support on some revisions. However, they seem to use r5 as an index into the CPU table entry, which might have been right a long time ago but no longer is. r4 is the right register to use. This probably caused some off behaviours on some PowerMac variants using 750cx or 7455 processor revisions. Signed-off-by: Benjamin Herrenschmidt <[email protected]> CC: [email protected]
2011-02-07powerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bitBenjamin Herrenschmidt1-2/+2
When calling setup_cpu() on 64-bit, we pass a pointer to the cputable entry we have found. This used to be fine when cur_cpu_spec was a pointer to that entry, but nowadays, we copy the entry into a separate variable, and we do so before we call the setup_cpu() callback. That means that any attempt by that callback at patching the CPU table entry (to adjust CPU features for example) will patch the wrong table. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc/book3e: Protect complex macro args in mmu-book3e.hScott Wood1-4/+4
Signed-off-by: Scott Wood <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-07powerpc: Fix pfn_valid() when memory starts at a non-zero addressScott Wood1-1/+1
max_mapnr is a pfn, not an index innto mem_map[]. So don't add ARCH_PFN_OFFSET a second time. Signed-off-by: Scott Wood <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-02-04powerpc/pci: Make both ppc32 and ppc64 use sysdata for pci_controllerGrant Likely9-42/+23
Currently, ppc32 uses sysdata for the pci_controller pointer, and ppc64 uses it to hold the device_node pointer. This patch moves the of_node pointer into (struct pci_bus*)->dev.of_node and (struct pci_dev*)->dev.of_node so that sysdata can be converted to always use the pci_controller pointer instead. It also fixes up the allocating of pci devices so that the of_node pointer gets assigned consistently and increments the ref count. Signed-off-by: Grant Likely <[email protected]>
2011-02-04of/pci: move of_irq_map_pci() into generic codeSebastian Andrzej Siewior4-99/+11
There is a tiny difference between PPC32 and PPC64. Microblaze uses the PPC32 variant. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> [[email protected]: Added comment to #endif, moved documentation block to function implementation, fixed for non ppc and microblaze compiles] Signed-off-by: Grant Likely <[email protected]>
2011-02-03memory hotplug: Define memory_block_size_bytes for powerpc/pseriesNathan Fontenot1-13/+53
Define a version of memory_block_size_bytes() for powerpc/pseries such that a memory block spans an entire lmb. Signed-off-by: Nathan Fontenot <[email protected]> Reviewed-by: Robin Holt <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-02powerpc/476: Workaround for PLB6 hangDave Kleikamp1-0/+35
The 476FP core may hang if an instruction fetch happens during an msync following a tlbsync. This workaround makes sure that enough instruction cache lines are pre-fetched before executing the msync. (sync and msync are the same to the compiler.) Signed-off-by: Dave Kleikamp <[email protected]> Signed-off-by: Josh Boyer <[email protected]>
2011-02-02powerpc/476: define specific cpu table entry DD2 coreDave Kleikamp2-5/+20
The DD2 core still has some unstability. Define CPU_FTR_476_DD2 to enable workarounds in later patches. This is based on an earlier, unreleased patch for DD1 by Ben Herrenschmidt. Signed-off-by: Dave Kleikamp <[email protected]> Signed-off-by: Josh Boyer <[email protected]>
2011-02-02powerpc/44x: PHY fixup for USB on canyonlands boardRupjyoti Sarmah6-2/+150
This fix is a reset for USB PHY that requires some amount of time for power to be stable on Canyonlands. Signed-off-by: Rupjyoti Sarmah <[email protected]> Signed-off-by: Josh Boyer <[email protected]>
2011-02-02powerpc/44x: Add USB DWC DTS entry to Canyonlands boardTirumala Marri1-0/+13
Add Synopsys Designware DTS entry for 460EX based Canyonlands board. Signed-off-by: Tirumala R Marri<[email protected]> Signed-off-by: Josh Boyer <[email protected]>
2011-01-31Merge branch 'tip/rtmutex' of ↵Thomas Gleixner1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into core/locking *git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace tip/rtmutex: rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27rwsem: Move duplicate function prototypes to linux/rwsem.hThomas Gleixner1-5/+0
All architecture specific rwsem headers carry the same function prototypes. Just x86 adds asmregparm, which is an empty define on all other architectures. S390 has a stale rwsem_downgrade_write() prototype. Remove the duplicates and add the prototypes to linux/rwsem.h Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: David Howells <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Richard Henderson <[email protected]> Acked-by: Tony Luck <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Paul Mundt <[email protected]> Acked-by: David Miller <[email protected]> Cc: Chris Zankel <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]>
2011-01-27rwsem: Unify the duplicate rwsem_is_locked() inlinesThomas Gleixner1-5/+0
Instead of having the same implementation in each architecture, move it to linux/rwsem.h and remove the duplicates. It's unlikely that an arch will ever implement something different, but we can deal with that when it happens. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: David Howells <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Matt Turner <[email protected]> Acked-by: Tony Luck <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Paul Mundt <[email protected]> Acked-by: David Miller <[email protected]> Cc: Chris Zankel <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]>
2011-01-27rwsem: Move duplicate init macros and functions to linux/rwsem.hThomas Gleixner1-27/+0
The rwsem initializers and related macros and functions are mostly the same. Some of them lack the lockdep initializer, but having it in place does not matter for architectures which do not support lockdep. powerpc, sparc, x86: No functional change sh, s390: Removes the duplicate init_rwsem (inline and #define) alpha, ia64, xtensa: Use the lockdep capable init function in lib/rwsem.c which is just uninlining the init function for the LOCKDEP=n case Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: David Howells <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Matt Turner <[email protected]> Acked-by: Tony Luck <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Paul Mundt <[email protected]> Acked-by: David Miller <[email protected]> Cc: Chris Zankel <[email protected]> LKML-Reference: <[email protected]>
2011-01-27rwsem: Move duplicate struct rwsem declaration to linux/rwsem.hThomas Gleixner1-9/+0
The difference between these declarations is the data type of the count member and the lack of lockdep in some architectures/ long is equivivalent to signed long and the #ifdef guarded dep_map member does not hurt anyone. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: David Howells <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Matt Turner <[email protected]> Acked-by: Tony Luck <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Paul Mundt <[email protected]> Acked-by: David Miller <[email protected]> Cc: Chris Zankel <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]>
2011-01-27rwsem: Cleanup includesThomas Gleixner1-5/+0
All rwsem implementations include the same headers. Include them from include/linux/rwsem.h Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: David Howells <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Matt Turner <[email protected]> Acked-by: Tony Luck <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Paul Mundt <[email protected]> Acked-by: David Miller <[email protected]> Cc: Chris Zankel <[email protected]> LKML-Reference: <[email protected]>
2011-01-25percpu: align percpu readmostly subsection to cachelineTejun Heo1-1/+1
Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <[email protected]> Cc: Shaohua Li <[email protected]>
2011-01-25Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Fix time function double declaration with glibc perf tools: Fix build by checking if extra warnings are supported perf tools: Fix build when using gcc 3.4.6 perf tools: Add missing header, fixes build perf tools: Fix 64 bit integer format strings perf test: Fix build on older glibcs perf: perf_event_exit_task_context: s/rcu_dereference/rcu_dereference_raw/ perf test: Use cpu_map->[cpu] when setting affinity perf symbols: Fix annotation of thumb code perf: Annotate cpuctx->ctx.mutex to avoid a lockdep splat powerpc, perf: Fix frequency calculation for overflowing counters (FSL version) perf: Fix perf_event_init_task()/perf_event_free_task() interaction perf: Fix find_get_context() vs perf_event_exit_task() race
2011-01-21Merge branch 'irq-cleanup-for-linus' of ↵Linus Torvalds1-25/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits) um: Use generic irq Kconfig tile: Use generic irq Kconfig sparc: Use generic irq Kconfig score: Use generic irq Kconfig powerpc: Use generic irq Kconfig parisc: Use generic irq Kconfig mn10300: Use generic irq Kconfig microblaze: Use generic irq Kconfig m68knommu: Use generic irq Kconfig ia64: Use generic irq Kconfig frv: Use generic irq Kconfig blackfin: Use generic irq Kconfig alpha: Use generic irq Kconfig genirq: Remove __do_IRQ m32r: Convert to generic irq Kconfig m32r: Convert usrv platform irq handling m32r: Convert opsput_lcdpld irq chip m32r: Convert opsput lanpld irq chip m32r: Convert opsput pld irq chip m32r: Convert opsput irq chip ...
2011-01-21Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2-4/+4
* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6: powerpc/83xx: fix build failures on dt compatible list.
2011-01-21Merge branch 'merge' of ↵Linus Torvalds34-344/+332
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits) powerpc/mpic: Fix mask/unmask timeout message powerpc/pseries: Add BNX2=m to defconfig powerpc: Enable 64kB pages and 1024 threads in pseries config powerpc: Disable mcount tracers in pseries defconfig powerpc/boot/dts: Install dts from the right directory powerpc: machine_check_generic is wrong on 64bit powerpc: Check RTAS extended log flag before checking length powerpc: Fix corruption when grabbing FWNMI data powerpc: Rework pseries machine check handler powerpc: Don't silently handle machine checks from userspace powerpc: Remove duplicate debugger hook in machine_check_exception powerpc: Never halt RTAS error logging after receiving an unrecoverable machine check powerpc: Don't force MSR_RI in machine_check_exception powerpc: Print 32 bits of DSISR in show_regs powerpc/kdump: Disable ftrace during kexec powerpc/kdump: Move crash_kexec_stop_spus to kdump crash handler powerpc/kexec: Remove empty ppc_md.machine_kexec_prepare powerpc/kexec: Don't initialise kexec hooks to default handlers powerpc/kdump: Remove ppc_md.machine_crash_shutdown powerpc/kexec: Remove ppc_md.machine_kexec ...
2011-01-21powerpc: Use generic irq KconfigThomas Gleixner1-21/+3
No functional change. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]>
2011-01-21genirq: Remove __do_IRQThomas Gleixner1-4/+0
All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Richard Henderson <[email protected]> Cc: Mike Frysinger <[email protected]> Cc: David Howells <[email protected]> Cc: Tony Luck <[email protected]> Cc: Greg Ungerer <[email protected]> Cc: Michal Simek <[email protected]> Acked-by: David Howells <[email protected]> Cc: Kyle McMartin <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Cc: Chen Liqin <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Chris Metcalf <[email protected]> Cc: Jeff Dike <[email protected]>
2011-01-21powerpc/mpic: Fix mask/unmask timeout messageScott Wood1-2/+4
Don't say that enable timed out when it was disable, and show which IRQ had the problem. Signed-off-by: Scott Wood <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc/pseries: Add BNX2=m to defconfigNishanth Aravamudan1-0/+1
Upcoming servers will include a Broadcom NIC, add to the defconfig to increase testing coverage and make sure mainline builds come up with networking. Signed-off-by: Nishanth Aravamudan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Enable 64kB pages and 1024 threads in pseries configAnton Blanchard1-1/+3
- Enable 64kB pages so it gets some regular testing. - The largest POWER7 has 1024 threads so bump NR_CPUS it to match. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Disable mcount tracers in pseries defconfigAnton Blanchard1-2/+0
IRQSOFF_TRACER and STACK_TRACER force the kernel to be built with -pg which is a substantial overhead. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc/boot/dts: Install dts from the right directoryBen Hutchings1-1/+1
The dts-installed variable is initialised using a wildcard path that will be expanded relative to the build directory. Use the existing variable dtstree to generate an absolute wildcard path that will work when building in a separate directory. Reported-by: Gerhard Pircher <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> Tested-by: Gerhard Pircher <[email protected]> [against 2.6.32] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: machine_check_generic is wrong on 64bitAnton Blanchard1-23/+0
Decoding machine checks is CPU specific and so machine_check_generic doesn't do the right thing on 64bit chips. Luckily we never call into this code because we call ppc_md.machine_check_exception instead if available. Since we check cur_cpu_spec->machine_check before calling it, we may as well remove machine_check_generic from 64bit archs. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Check RTAS extended log flag before checking lengthAnton Blanchard1-1/+1
The spec suggests we should first check the extended log flag before checking the length field. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Fix corruption when grabbing FWNMI dataAnton Blanchard1-14/+38
The FWNMI code uses a global buffer without any locks to read the RTAS error information. If two CPUs take a machine check at once then we will corrupt this buffer. Since most FWNMI rtas messages are not of the extended type, we can create a 64bit percpu buffer and use it where possible. If we do receive an extended RTAS log then we fall back to the old behaviour of using the global buffer. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Rework pseries machine check handlerAnton Blanchard1-18/+30
Rework pseries machine check handler: - If MSR_RI isn't set, we cannot recover even if the machine check was fully recovered - Rename nonfatal to recovered - Handle RTAS_DISP_LIMITED_RECOVERY - Use BUS_MCEERR_AR instead of BUS_ADRERR - Don't check all the RTAS error log fields when receiving a synchronous machine check. Recent versions of the pseries firmware do not fill them in during a machine check and instead send a follow up error log with the detailed information. If we see a synchronous machine check, and we came from userspace then kill the task. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Don't silently handle machine checks from userspaceAnton Blanchard1-5/+0
If a machine check comes from userspace we send a SIGBUS to the task and fail to printk anything. If we are taking machine checks due to bad hardware we want to know about it right away. Furthermore if we don't complain loudly then it will look a lot like a bug in the userspace application, potentially causing a lot of confusion. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-01-21powerpc: Remove duplicate debugger hook in machine_check_exceptionAnton Blanchard1-2/+0
We are calling debugger_fault_handler twice in machine_check_exception. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
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