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Some architectures have a single address space for kernel and user addresses, which makes it possible to determine if an address is in kernel space or user space. Some don't, e.g.: sparc. Cache that info in perf_env so that, for instance, code needing to fallback failed symbol lookups at the kernel space in single address space arches can lookup at userspace. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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| bpf | ||
| build | ||
| cgroup | ||
| crypto | ||
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| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| nfsd | ||
| objtool | ||
| pci | ||
| pcmcia | ||
| perf | ||
| power | ||
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| spi | ||
| testing | ||
| thermal/tmon | ||
| time | ||
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| virtio | ||
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| Makefile | ||