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2012-01-06Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (106 commits) perf kvm: Fix copy & paste error in description perf script: Kill script_spec__delete perf top: Fix a memory leak perf stat: Introduce get_ratio_color() helper perf session: Remove impossible condition check perf tools: Fix feature-bits rework fallout, remove unused variable perf script: Add generic perl handler to process events perf tools: Use for_each_set_bit() to iterate over feature flags perf tools: Unify handling of features when writing feature section perf report: Accept fifos as input file perf tools: Moving code in some files perf tools: Fix out-of-bound access to struct perf_session perf tools: Continue processing header on unknown features perf tools: Improve macros for struct feature_ops perf: builtin-record: Document and check that mmap_pages must be a power of two. perf: builtin-record: Provide advice if mmap'ing fails with EPERM. perf tools: Fix truncated annotation perf script: look up thread using tid instead of pid perf tools: Look up thread names for system wide profiling perf tools: Fix comm for processes with named threads ...
2012-01-06Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits) cpu: Export cpu_up() rcu: Apply ACCESS_ONCE() to rcu_boost() return value Revert "rcu: Permit rt_mutex_unlock() with irqs disabled" docs: Additional LWN links to RCU API rcu: Augment rcu_batch_end tracing for idle and callback state rcu: Add rcutorture tests for srcu_read_lock_raw() rcu: Make rcutorture test for hotpluggability before offlining CPUs driver-core/cpu: Expose hotpluggability to the rest of the kernel rcu: Remove redundant rcu_cpu_stall_suppress declaration rcu: Adaptive dyntick-idle preparation rcu: Keep invoking callbacks if CPU otherwise idle rcu: Irq nesting is always 0 on rcu_enter_idle_common rcu: Don't check irq nesting from rcu idle entry/exit rcu: Permit dyntick-idle with callbacks pending rcu: Document same-context read-side constraints rcu: Identify dyntick-idle CPUs on first force_quiescent_state() pass rcu: Remove dynticks false positives and RCU failures rcu: Reduce latency of rcu_prepare_for_idle() rcu: Eliminate RCU_FAST_NO_HZ grace-period hang rcu: Avoid needlessly IPIing CPUs at GP end ...
2012-01-06Merge branch 'core-memblock-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) memblock: Reimplement memblock allocation using reverse free area iterator memblock: Kill early_node_map[] score: Use HAVE_MEMBLOCK_NODE_MAP s390: Use HAVE_MEMBLOCK_NODE_MAP mips: Use HAVE_MEMBLOCK_NODE_MAP ia64: Use HAVE_MEMBLOCK_NODE_MAP SuperH: Use HAVE_MEMBLOCK_NODE_MAP sparc: Use HAVE_MEMBLOCK_NODE_MAP powerpc: Use HAVE_MEMBLOCK_NODE_MAP memblock: Implement memblock_add_node() memblock: s/memblock_analyze()/memblock_allow_resize()/ and update users memblock: Track total size of regions automatically powerpc: Cleanup memblock usage memblock: Reimplement memblock_enforce_memory_limit() using __memblock_remove() memblock: Make memblock functions handle overflowing range @size memblock: Reimplement __memblock_remove() using memblock_isolate_range() memblock: Separate out memblock_isolate_range() from memblock_set_node() memblock: Kill memblock_init() memblock: Kill sentinel entries at the end of static region arrays memblock: Add __memblock_dump_all() ...
2012-01-04x86: Fix atomic64_xxx_cx8() functionsEric Dumazet
It appears about all functions in arch/x86/lib/atomic64_cx8_32.S are wrong in case cmpxchg8b must be restarted, because LOCK_PREFIX macro defines a label "1" clashing with other local labels : 1: some_instructions LOCK_PREFIX cmpxchg8b (%ebp) jne 1b / jumps to beginning of LOCK_PREFIX ! A possible fix is to use a magic label "672" in LOCK_PREFIX asm definition, similar to the "671" one we defined in LOCK_PREFIX_HERE. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Jan Beulich <JBeulich@suse.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/1325608540.2320.103.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-04x86: Fix and improve cmpxchg_double{,_local}()Jan Beulich
Just like the per-CPU ones they had several problems/shortcomings: Only the first memory operand was mentioned in the asm() operands, and the 2x64-bit version didn't have a memory clobber while the 2x32-bit one did. The former allowed the compiler to not recognize the need to re-load the data in case it had it cached in some register, while the latter was overly destructive. The types of the local copies of the old and new values were incorrect (the types of the pointed-to variables should be used here, to make sure the respective old/new variable types are compatible). The __dummy/__junk variables were pointless, given that local copies of the inputs already existed (and can hence be used for discarded outputs). The 32-bit variant of cmpxchg_double_local() referenced cmpxchg16b_local(). At once also: - change the return value type to what it really is: 'bool' - unify 32- and 64-bit variants - abstract out the common part of the 'normal' and 'local' variants Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/4F01F12A020000780006A19B@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-04Merge commit 'v3.2-rc7' into x86/asmIngo Molnar
Merge reason: Update from -rc4 to -rc7. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-03switch debugfs to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch device_get_devnode() and ->devnode() to umode_t *Al Viro
both callers of device_get_devnode() are only interested in lower 16bits and nobody tries to return anything wider than 16bit anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-12-29Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Fix raw_spin_unlock_irqrestore() usage oprofile, arm/sh: Fix oprofile_arch_exit() linkage issue
2011-12-29x86/intel config: Fix the APB_TIMER selectionAlan Cox
Seems Kconfig SELECT isn't selecting things hierarchically when selected. config APB_TIMER def_bool y if X86_INTEL_MID prompt "Intel MID APB Timer Support" if X86_INTEL_MID select DW_APB_TIMER depends on X86_INTEL_MID && SFI when we select APB_TIMER doesn't select DW_APB_TIMER so do it by hand. Signed-off-by: Alan Cox <alan@linux.intel.com> Link: http://lkml.kernel.org/n/tip-kpnaimplltk6d1lolusqj3ae@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-27KVM: x86 emulator: implement RDPMC (0F 33)Avi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: fix RDPMC privilege checkAvi Kivity
RDPMC is only privileged if CR4.PCE=0. check_rdpmc() already implements this, so all we need to do is drop the Priv flag. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Expose the architectural performance monitoring CPUID leafGleb Natapov
Provide a CPUID leaf that describes the emulated PMU. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: VMX: Intercept RDPMCAvi Kivity
Intercept RDPMC and forward it to the PMU emulation code. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: SVM: Intercept RDPMCAvi Kivity
Intercept RDPMC and forward it to the PMU emulation code. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Add generic RDPMC supportAvi Kivity
Add a helper function that emulates the RDPMC instruction operation. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Expose a version 2 architectural PMU to a guestsGleb Natapov
Use perf_events to emulate an architectural PMU, version 2. Based on PMU version 1 emulation by Avi Kivity. [avi: adjust for cpuid.c] [jan: fix anonymous field initialization for older gcc] Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Expose kvm_lapic_local_deliver()Avi Kivity
Needed to deliver performance monitoring interrupts. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for Group 9 instructionTakuya Yoshikawa
Group 9: 0F C7 Rename em_grp9() to em_cmpxchg8b() and register it. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for Group 4/5 instructionsTakuya Yoshikawa
Group 4: FE Group 5: FF Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for Group 1A instructionTakuya Yoshikawa
Group 1A: 8F Register em_pop() directly and remove em_grp1a(). Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: drop bsp_vcpu pointer from kvm structGleb Natapov
Drop bsp_vcpu pointer from kvm struct since its only use is incorrect anyway. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86: Consolidate PIT legacy testJan Kiszka
Move the test for KVM_PIT_FLAGS_HPET_LEGACY into create_pit_timer instead of replicating it on the caller site. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86: Do not rely on implicit inclusionsJan Kiszka
Works so far by change, but it is not guaranteed to stay like this. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: Make KVM_INTEL depend on CPU_SUP_INTELAvi Kivity
PMU virtualization needs to talk to Intel-specific bits of perf; these are only available when CPU_SUP_INTEL=y. Fixes arch/x86/built-in.o: In function `atomic_switch_perf_msrs': vmx.c:(.text+0x6b1d4): undefined reference to `perf_guest_get_msrs' Reported-by: Ingo Molnar <mingo@elte.hu> Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27Merge remote-tracking branch 'tip/perf/core' into kvm-updates/3.3Avi Kivity
* tip/perf/core: (66 commits) perf, x86: Expose perf capability to other modules perf, x86: Implement arch event mask as quirk x86, perf: Disable non available architectural events jump_label: Provide jump_label_key initializers jump_label, x86: Fix section mismatch perf, core: Rate limit perf_sched_events jump_label patching perf: Fix enable_on_exec for sibling events perf: Remove superfluous arguments perf, x86: Prefer fixed-purpose counters when scheduling perf, x86: Fix event scheduler for constraints with overlapping counters perf, x86: Implement event scheduler helper functions perf: Avoid a useless pmu_disable() in the perf-tick x86/tools: Add decoded instruction dump mode x86: Update instruction decoder to support new AVX formats x86/tools: Fix insn_sanity message outputs x86/tools: Fix instruction decoder message output x86: Fix instruction decoder to handle grouped AVX instructions x86/tools: Fix Makefile to build all test tools perf test: Soft errors shouldn't stop the "Validate PERF_RECORD_" test perf test: Validate PERF_RECORD_ events and perf_sample fields ... Signed-off-by: Avi Kivity <avi@redhat.com> * commit 'b3d9468a8bd218a695e3a0ff112cd4efd27b670a': (66 commits) perf, x86: Expose perf capability to other modules perf, x86: Implement arch event mask as quirk x86, perf: Disable non available architectural events jump_label: Provide jump_label_key initializers jump_label, x86: Fix section mismatch perf, core: Rate limit perf_sched_events jump_label patching perf: Fix enable_on_exec for sibling events perf: Remove superfluous arguments perf, x86: Prefer fixed-purpose counters when scheduling perf, x86: Fix event scheduler for constraints with overlapping counters perf, x86: Implement event scheduler helper functions perf: Avoid a useless pmu_disable() in the perf-tick x86/tools: Add decoded instruction dump mode x86: Update instruction decoder to support new AVX formats x86/tools: Fix insn_sanity message outputs x86/tools: Fix instruction decoder message output x86: Fix instruction decoder to handle grouped AVX instructions x86/tools: Fix Makefile to build all test tools perf test: Soft errors shouldn't stop the "Validate PERF_RECORD_" test perf test: Validate PERF_RECORD_ events and perf_sample fields ...
2011-12-27KVM: Use memdup_user instead of kmalloc/copy_from_userSasha Levin
Switch to using memdup_user when possible. This makes code more smaller and compact, and prevents errors. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Use kmemdup() instead of kmalloc/memcpySasha Levin
Switch to kmemdup() in two places to shorten the code and avoid possible bugs. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Remove set-but-unused cr4 from check_cr_writeJan Kiszka
This was probably copy&pasted from the cr0 case, but it's unneeded here. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: MMU: Drop unused return value of kvm_mmu_remove_some_alloc_mmu_pagesJan Kiszka
freed_pages is never evaluated, so remove it as well as the return code kvm_mmu_remove_some_alloc_mmu_pages so far delivered to its only user. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: use this_cpu_xxx replace percpu_xxx funcsAlex,Shi
percpu_xxx funcs are duplicated with this_cpu_xxx funcs, so replace them for further code clean up. And in preempt safe scenario, __this_cpu_xxx funcs has a bit better performance since __this_cpu_xxx has no redundant preempt_disable() Signed-off-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: MMU: audit: inline audit functionXiao Guangrong
inline audit function and little cleanup Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: MMU: remove oos_shadow parameterXiao Guangrong
The unsync code should be stable now, maybe it is the time to remove this parameter to cleanup the code a little bit Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: MMU: move the relevant mmu code to mmu.cXiao Guangrong
Move the mmu code in kvm_arch_vcpu_init() to kvm_mmu_create() Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86: remove the dead code of KVM_EXIT_HYPERCALLXiao Guangrong
KVM_EXIT_HYPERCALL is not used anymore, so remove the code Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: MMU: audit: replace mmu audit tracepoint with jump-labelXiao Guangrong
The tracepoint is only used to audit mmu code, it should not be exposed to user, let us replace it with jump-label. Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Refactor and simplify kvm_dev_ioctl_get_supported_cpuidSasha Levin
This patch cleans and simplifies kvm_dev_ioctl_get_supported_cpuid by using a table instead of duplicating code as Avi suggested. This patch also fixes a bug where kvm_dev_ioctl_get_supported_cpuid would return -E2BIG when amount of entries passed was just right. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: expose latest Intel cpu new features (BMI1/BMI2/FMA/AVX2) to guestLiu, Jinsong
Intel latest cpu add 6 new features, refer http://software.intel.com/file/36945 The new feature cpuid listed as below: 1. FMA CPUID.EAX=01H:ECX.FMA[bit 12] 2. MOVBE CPUID.EAX=01H:ECX.MOVBE[bit 22] 3. BMI1 CPUID.EAX=07H,ECX=0H:EBX.BMI1[bit 3] 4. AVX2 CPUID.EAX=07H,ECX=0H:EBX.AVX2[bit 5] 5. BMI2 CPUID.EAX=07H,ECX=0H:EBX.BMI2[bit 8] 6. LZCNT CPUID.EAX=80000001H:ECX.LZCNT[bit 5] This patch expose these features to guest. Among them, FMA/MOVBE/LZCNT has already been defined, MOVBE/LZCNT has already been exposed. This patch defines BMI1/AVX2/BMI2, and exposes FMA/BMI1/AVX2/BMI2 to guest. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: Move cpuid code to new fileAvi Kivity
The cpuid code has grown; put it into a separate file. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for INS/OUTS from/to port in DXTakuya Yoshikawa
INSB : 6C INSW/INSD : 6D OUTSB : 6E OUTSW/OUTSD: 6F The I/O port address is read from the DX register when we decode the operand because we see the SrcDX/DstDX flag is set. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: introduce id_to_memslot functionXiao Guangrong
Introduce id_to_memslot to get memslot by slot id Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: introduce kvm_for_each_memslot macroXiao Guangrong
Introduce kvm_for_each_memslot to walk all valid memslot Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: introduce update_memslots functionXiao Guangrong
Introduce update_memslots to update slot which will be update to kvm->memslots Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: introduce KVM_MEM_SLOTS_NUM macroXiao Guangrong
Introduce KVM_MEM_SLOTS_NUM macro to instead of KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for BSF/BSRTakuya Yoshikawa
BSF: 0F BC BSR: 0F BD Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for CMPXCHGTakuya Yoshikawa
CMPXCHG: 0F B0, 0F B1 Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for WRMSR/RDMSRTakuya Yoshikawa
WRMSR: 0F 30 RDMSR: 0F 32 Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for MOV to cr/drTakuya Yoshikawa
MOV: 0F 22 (move to control registers) MOV: 0F 23 (move to debug registers) Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for CALLTakuya Yoshikawa
CALL: E8 Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-27KVM: x86 emulator: Use opcode::execute for BT familyTakuya Yoshikawa
BT : 0F A3 BTS: 0F AB BTR: 0F B3 BTC: 0F BB Group 8: 0F BA Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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