• Linus Torvalds's avatar
    Merge tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 25d8d4ee
    Linus Torvalds authored
    Pull powerpc updates from Michael Ellerman:
    
     - Add support for (optionally) using queued spinlocks & rwlocks.
    
     - Support for a new faster system call ABI using the scv instruction on
       Power9 or later.
    
     - Drop support for the PROT_SAO mmap/mprotect flag as it will be
       unsupported on Power10 and future processors, leaving us with no way
       to implement the functionality it requests. This risks breaking
       userspace, though we believe it is unused in practice.
    
     - A bug fix for, and then the removal of, our custom stack expansion
       checking. We now allow stack expansion up to the rlimit, like other
       architectures.
    
     - Remove the remnants of our (previously disabled) topology update
       code, which tried to react to NUMA layout changes on virtualised
       systems, but was prone to crashes and other problems.
    
     - Add PMU support for Power10 CPUs.
    
     - A change to our signal trampoline so that we don't unbalance the link
       stack (branch return predictor) in the signal delivery path.
    
     - Lots of other cleanups, refactorings, smaller features and so on as
       usual.
    
    Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey
    Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju
    T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan
    S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris
    Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan
    Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn
    Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand,
    Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel
    Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh
    Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan
    Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton
    Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan
    Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran,
    Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud,
    Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy
    Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh
    Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar
    Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza
    Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov,
    Wei Yongjun, Wen Xiong, YueHaibing.
    
    * tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits)
      selftests/powerpc: Fix pkey syscall redefinitions
      powerpc: Fix circular dependency between percpu.h and mmu.h
      powerpc/powernv/sriov: Fix use of uninitialised variable
      selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs
      powerpc/40x: Fix assembler warning about r0
      powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric
      powerpc/papr_scm: Fetch nvdimm performance stats from PHYP
      cpuidle: pseries: Fixup exit latency for CEDE(0)
      cpuidle: pseries: Add function to parse extended CEDE records
      cpuidle: pseries: Set the latency-hint before entering CEDE
      selftests/powerpc: Fix online CPU selection
      powerpc/perf: Consolidate perf_callchain_user_[64|32]()
      powerpc/pseries/hotplug-cpu: Remove double free in error path
      powerpc/pseries/mobility: Add pr_debug() for device tree changes
      powerpc/pseries/mobility: Set pr_fmt()
      powerpc/cacheinfo: Warn if cache object chain becomes unordered
      powerpc/cacheinfo: Improve diagnostics about malformed cache lists
      powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages
      powerpc/cacheinfo: Set pr_fmt()
      powerpc: fix function annotations to avoid section mismatch warnings with gcc-10
      ...
    25d8d4ee
paca.h 8.56 KB