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2016-03-08x86/mce/AMD, EDAC: Enable error decoding of Scalable MCA errorsAravind Gopalakrishnan1-0/+29
For Scalable MCA enabled processors, errors are listed per IP block. And since it is not required for an IP to map to a particular bank, we need to use HWID and McaType values from the MCx_IPID register to figure out which IP a given bank represents. We also have a new bit (TCC) in the MCx_STATUS register to indicate Task context is corrupt. Add logic here to decode errors from all known IP blocks for Fam17h Model 00-0fh and to print TCC errors. [ Minor fixups. ] Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1457021458-2522-3-git-send-email-Aravind.Gopalakrishnan@amd.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-08Merge branch 'linus' into ras/core, to pick up fixesIngo Molnar1-0/+2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-08x86/microcode/intel: Drop orig_sum from ext signature checksumBorislav Petkov1-3/+3
It is 0 because for !0 values we would have exited already. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1457345404-28884-6-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-08x86/microcode/intel: Improve microcode sanity-checking error messagesBorislav Petkov1-10/+26
Turn them into proper sentences. Add comments to microcode_sanity_check() to explain what it does. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1457345404-28884-5-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-08x86/microcode/intel: Merge two consecutive if-statementsBorislav Petkov1-5/+5
Merge the two consecutive "if (ext_table_size)". No functional change. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1457345404-28884-4-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-08x86/microcode/intel: Get rid of DWSIZEBorislav Petkov1-2/+2
sizeof(u32) is perfectly clear as it is. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1457345404-28884-3-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-08x86/microcode/intel: Change checksum variables to u32Chris Bainbridge1-4/+4
Microcode checksum verification should be done using unsigned 32-bit values otherwise the calculation overflow results in undefined behaviour. This is also nicely documented in the SDM, section "Microcode Update Checksum": "To check for a corrupt microcode update, software must perform a unsigned DWORD (32-bit) checksum of the microcode update. Even though some fields are signed, the checksum procedure treats all DWORDs as unsigned. Microcode updates with a header version equal to 00000001H must sum all DWORDs that comprise the microcode update. A valid checksum check will yield a value of 00000000H." but for some reason the code has been using ints from the very beginning. In practice, this bug possibly manifested itself only when doing the microcode data checksum - apparently, currently shipped Intel microcode doesn't have an extended signature table for which we do checksum verification too. UBSAN: Undefined behaviour in arch/x86/kernel/cpu/microcode/intel_lib.c:105:12 signed integer overflow: -1500151068 + -2125470173 cannot be represented in type 'int' CPU: 0 PID: 0 Comm: swapper Not tainted 4.5.0-rc5+ #495 ... Call Trace: dump_stack ? inotify_ioctl ubsan_epilogue handle_overflow __ubsan_handle_add_overflow microcode_sanity_check get_matching_model_microcode.isra.2.constprop.8 ? early_idt_handler_common ? strlcpy ? find_cpio_data load_ucode_intel_bsp load_ucode_bsp ? load_ucode_bsp x86_64_start_kernel [ Expand and massage commit message. ] Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: hmh@hmh.eng.br Link: http://lkml.kernel.org/r/1456834359-5132-1-git-send-email-chris.bainbridge@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-07Merge tag 'v4.5-rc7' into x86/asm, to pick up SMAP fixIngo Molnar1-0/+2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-29x86/topology: Create logical package idThomas Gleixner2-0/+15
For per package oriented services we must be able to rely on the number of CPU packages to be within bounds. Create a tracking facility, which - calculates the number of possible packages depending on nr_cpu_ids after boot - makes sure that the package id is within the number of possible packages. If the apic id is outside we map it to a logical package id if there is enough space available. Provide interfaces for drivers to query the mapping and do translations from physcial to logical ids. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Harish Chegondi <harish.chegondi@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/20160222221011.541071755@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-25Merge branch 'ras/core' into core/objtool, to pick up the new exception table formatIngo Molnar3-64/+141
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-25Merge branch 'x86/debug' into core/objtool, to pick up frame pointer fixesIngo Molnar12-25/+28
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-24x86: Fix misspellings in commentsAdam Buchbinder5-6/+6
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: trivial@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-24x86/amd: Set ELF function type for vide()Josh Poimboeuf1-1/+4
vide() is a callable function, but is missing the ELF function type, which confuses tools like stacktool. Properly annotate it to be a callable function. The generated code is unchanged. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chris J Arges <chris.j.arges@canonical.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Pedro Alves <palves@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/a324095f5c9390ff39b15b4562ea1bbeda1a8282.1453405861.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-18x86/mm/pkeys: Actually enable Memory Protection Keys in the CPUDave Hansen1-0/+43
This sets the bit in 'cr4' to actually enable the protection keys feature. We also include a boot-time disable for the feature "nopku". Seting X86_CR4_PKE will cause the X86_FEATURE_OSPKE cpuid bit to appear set. At this point in boot, identify_cpu() has already run the actual CPUID instructions and populated the "cpu features" structures. We need to go back and re-run identify_cpu() to make sure it gets updated values. We *could* simply re-populate the 11th word of the cpuid data, but this is probably quick enough. Also note that with the cpu_has() check and X86_FEATURE_PKU present in disabled-features.h, we do not need an #ifdef for setup_pku(). Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave@sr71.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20160212210229.6708027C@viggo.jf.intel.com [ Small readability edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-18x86/cpufeature: Create a new synthetic cpu capability for machine check recoveryTony Luck1-0/+13
The Intel Software Developer Manual describes bit 24 in the MCG_CAP MSR: MCG_SER_P (software error recovery support present) flag, bit 24 — Indicates (when set) that the processor supports software error recovery But only some models with this capability bit set will actually generate recoverable machine checks. Check the model name and set a synthetic capability bit. Provide a command line option to set this bit anyway in case the kernel doesn't recognise the model name. Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/2e5bfb23c89800a036fb8a45fa97a74bb16bc362.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-18Merge branch 'x86/urgent' into x86/asm, to pick up fixesIngo Molnar4-4/+27
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-18x86/mce: Check for faults tagged in EXTABLE_CLASS_FAULT exception table entriesTony Luck2-36/+56
Extend the severity checking code to add a new context IN_KERN_RECOV which is used to indicate that the machine check was triggered by code in the kernel tagged with _ASM_EXTABLE_FAULT() so that the ex_handler_fault() handler will provide the fixup code with the trap number. Major re-work to the tail code in do_machine_check() to make all this readable/maintainable. One functional change is that tolerant=3 no longer stops recovery actions. Revert to only skipping sending SIGBUS to the current process. Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/89d243d05a7943bb187d1074bb30d9c4f482d5f5.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event.h to its new homeBorislav Petkov1-955/+0
Now that all functionality has been moved to arch/x86/events/, move the perf_event.h header and adjust include paths. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-18-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_msr.c .............. => x86/events/msr.cBorislav Petkov2-247/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-17-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_p6.c ............... => x86/events/intel/p6.cBorislav Petkov2-281/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-16-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_p4.c ............... => x86/events/intel/p4.cBorislav Petkov2-1377/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-15-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_knc.c .............. => x86/events/intel/knc.cBorislav Petkov2-320/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-14-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_uncore_snbep.c => x86/events/intel/uncore_snbep.cBorislav Petkov2-3126/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-13-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_uncore_snb.c => x86/events/intel/uncore_snb.cBorislav Petkov2-719/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-12-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_uncore_nhmex.c => x86/events/intel/uncore_nmhex.cBorislav Petkov2-1223/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-11-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_uncore.[ch] .. => x86/events/intel/uncore.[ch]Borislav Petkov6-1764/+4
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-10-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_rapl.c ....... => x86/events/intel/rapl.cBorislav Petkov2-784/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-9-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_pt.[ch] ...... => x86/events/intel/pt.[ch]Borislav Petkov3-1305/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-8-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_lbr.c ........ => x86/events/intel/lbr.cBorislav Petkov2-1063/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-7-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_ds.c ......... => x86/events/intel/ds.cBorislav Petkov2-1369/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-6-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_cstate.c ..... => x86/events/intel/cstate.cBorislav Petkov2-695/+0
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-5-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_cqm.c ........ => x86/events/intel/cqm.cBorislav Petkov2-1392/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-4-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel.c ............ => x86/events/intel/core.cBorislav Petkov2-3774/+1
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-3-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86: Move perf_event_intel_bts.c ........ => x86/events/intel/bts.cBorislav Petkov2-545/+1
Start moving the Intel bits. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1455098123-11740-2-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17x86/microcode: Use kmemdup() rather than duplicating its implementationAndrzej Hajda2-6/+2
The patch was generated using fixed coccinelle semantic patch scripts/coccinelle/api/memdup.cocci. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1455612202-14414-3-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17x86/microcode: Remove unnecessary paravirt_enabled checkBoris Ostrovsky1-1/+1
Commit: a18a0f6850d4 ("x86, microcode: Don't initialize microcode code on paravirt") added a paravirt test in microcode_init(), primarily to avoid making mc_bp_resume()->load_ucode_ap()->check_loader_disabled_ap() calls because on 32-bit kernels this callchain ends up using __pa_nodebug() macro which is invalid for Xen PV guests. A subsequent commit: fbae4ba8c4a3 ("x86, microcode: Reload microcode on resume") eliminated this callchain thus making a18a0f6850d4 unnecessary. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: david.vrabel@citrix.com Cc: konrad.wilk@oracle.com Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1455612202-14414-2-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-17perf/x86/amd/uncore: Plug reference leakThomas Gleixner1-0/+2
In the error path of amd_uncore_cpu_up_prepare() the newly allocated uncore struct is freed, but the percpu pointer still references it. Set it to NULL. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1602162302170.19512@nanos Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-16x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitionsDave Hansen1-0/+1
There are two CPUID bits for protection keys. One is for whether the CPU contains the feature, and the other will appear set once the OS enables protection keys. Specifically: Bit 04: OSPKE. If 1, OS has set CR4.PKE to enable Protection keys (and the RDPKRU/WRPKRU instructions) This is because userspace can not see CR4 contents, but it can see CPUID contents. X86_FEATURE_PKU is referred to as "PKU" in the hardware documentation: CPUID.(EAX=07H,ECX=0H):ECX.PKU [bit 3] X86_FEATURE_OSPKE is "OSPKU": CPUID.(EAX=07H,ECX=0H):ECX.OSPKE [bit 4] These are the first CPU features which need to look at the ECX word in CPUID leaf 0x7, so this patch also includes fetching that word in to the cpuinfo->x86_capability[] array. Add it to the disabled-features mask when its config option is off. Even though we are not using it here, we also extend the REQUIRED_MASK_BIT_SET() macro to keep it mirroring the DISABLED_MASK_BIT_SET() version. This means that in almost all code, you should use: cpu_has(c, X86_FEATURE_PKU) and *not* the CONFIG option. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave@sr71.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20160212210201.7714C250@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-16Merge branches 'x86/fpu', 'x86/mm' and 'x86/asm' into x86/pkeysIngo Molnar10-24/+27
Provide a stable basis for the pkeys patches, which touches various x86 details. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/mm: Add a 'noinvpcid' boot option to turn off INVPCIDAndy Lutomirski1-0/+16
This adds a chicken bit to turn off INVPCID in case something goes wrong. It's an early_param() because we do TLB flushes before we parse __setup() parameters. Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/f586317ed1bc2b87aee652267e515b90051af385.1454096309.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/AMD: Issue microcode updated message laterBorislav Petkov1-4/+4
Before this, we issued this message from save_microcode_in_initrd() which is called from free_initrd_mem(), i.e., only when we have an initrd enabled. However, we can update from builtin microcode too but then we don't issue the update message. Fix it by issuing that message on the generic driver init path. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-17-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Cleanup get_matching_model_microcode()Borislav Petkov1-14/+11
Reflow arguments, sort local variables in reverse christmas tree, kill "out" label. No functionality change. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-16-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Remove unused arg of get_matching_model_microcode()Borislav Petkov1-2/+2
@cpu is unused, kill it. No functionality change. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-15-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Rename mc_saved_in_initrdBorislav Petkov1-24/+28
Rename it to mc_tmp_ptrs to denote better what it is - a temporary array for saving pointers to microcode blobs. And "initrd" is not accurate anymore since initrd is not the only source for early microcode. Therefore, rename copy_initrd_ptrs() to copy_ptrs() simply and "initrd_start" to "offset". And then do the following convention: the global variable is called "mc_tmp_ptrs" and the local function arguments "mc_ptrs" for differentiation. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-14-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Use *wrmsrl variantsBorislav Petkov1-9/+5
... and drop the 32-bit casting games which we had to do at the time because wrmsr() was unforgiving then, see c3fd0bd5e19a from the full history tree: commit c3fd0bd5e19aaff9cdd104edff136a2023db657e Author: Linus Torvalds <torvalds@home.osdl.org> Date: Tue Feb 17 23:23:41 2004 -0800 Fix up the microcode update on regular 32-bit x86. Our wrmsr() is a bit unforgiving and really doesn't like 64-bit values. ... Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-13-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Cleanup apply_microcode_intel()Borislav Petkov1-5/+7
Get rid of local variable cpu_num as it is equal to @cpu now. Deref cpu_data() only when it is really needed at the end. No functionality change. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-12-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Move the BUG_ON up and turn it into WARN_ONBorislav Petkov1-4/+4
If we're going to BUG_ON() because we're running on the wrong CPU, we better do it as the first thing we do when entering that function. And also, turn it into a WARN_ON() because it is not worth to panic the system if we apply the microcode on the wrong CPU - we're simply going to exit early. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-11-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Rename mc_intel variable to mcBorislav Petkov1-29/+29
Well, it is apparent what it points to - microcode. And since it is the intel loader, no need for the "_intel" suffix. Use "!" for the 0/NULL checks, while at it. No functionality change. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-10-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Rename mc_saved_count to num_savedBorislav Petkov1-30/+31
It is shorter and easier on the eyes. Change the "== 0" tests to "!..." while at it. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-9-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-09x86/microcode/intel: Rename local variables of type struct mc_saved_dataBorislav Petkov1-31/+27
So it is always a head-twister when trying to stare at code which has a bunch of struct mc_saved_data *mc_saved_data; local function variables *and* a global mc_saved_data of the same name. Rename all locals to "mcs" to differentiate from the global one. No functionality change. Tested-by: Thomas Voegtle <tv@lio96.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454499225-21544-8-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
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