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Andrew Waterman f1b65f20fb
RISC-V: Limit the scope of TLB shootdowns 
RISC-V systems perform TLB shootdows via the SBI, which currently
performs an IPI to each of the remote harts which then performs a local
TLB flush.  This process is a bit on the slow side, but we can at least
speed it up for some common cases by restricting the set of harts to
shoot down to the actual set of harts that are currently participating
in the given mm context, as opposed to the entire system.

This should provide a measurable performance increase, but we haven't
measured it.  Regardless, it seems like obviously the right thing to do
here.

Signed-off-by: Andrew Waterman <andrew@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2018-01-30 19:13:33 -08:00
..
alpha alpha/PCI: Fix noname IRQ level detection 2018-01-20 16:22:36 -08:00
arc ARC fixes for 4.15-rc7 2018-01-05 16:06:35 -08:00
arm ARM: SoC fixes for 4.15 2018-01-19 11:21:31 -08:00
arm64 KVM fixes for v4.15-rc9 2018-01-20 11:41:09 -08:00
blackfin bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
c6x bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
cris bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
frv bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
h8300 bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
hexagon bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
ia64 ia64: Rewrite atomic_add and atomic_sub 2018-01-19 10:47:51 -08:00
m32r kernel/exit.c: export abort() to modules 2018-01-04 16:45:09 -08:00
m68k Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-08 13:32:44 -08:00
metag bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
microblaze bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
mips MIPS: Fix undefined reference to physical_memsize 2018-01-18 20:44:29 +00:00
mn10300 bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
nios2 bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
openrisc bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
parisc parisc: qemu idle sleep support 2018-01-06 12:28:04 +01:00
powerpc KVM fixes for v4.15-rc9 2018-01-20 11:41:09 -08:00
riscv RISC-V: Limit the scope of TLB shootdowns 2018-01-30 19:13:33 -08:00
s390 KVM: s390: another fix for cmma migration 2018-01-24 16:25:53 +01:00
score bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
sh SolutionEngine771x: add Ether TSU resource 2018-01-09 12:21:14 -05:00
sparc sparc64: fix typo in CONFIG_CRYPTO_DES_SPARC64 => CONFIG_CRYPTO_CAMELLIA_SPARC64 2018-01-24 16:47:55 -05:00
tile bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
um Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-23 11:53:04 -08:00
unicore32 kernel/exit.c: export abort() to modules 2018-01-04 16:45:09 -08:00
x86 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-28 12:24:36 -08:00
xtensa bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
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