* Qiaowei Ren <[email protected]> wrote:
> This patch adds the PR_MPX_INIT and PR_MPX_RELEASE prctl()
> commands on the x86 platform. These commands can be used to
> init and release MPX related resource.
>
> A MMU notifier will be registered during PR_MPX_INIT
> command execution. So the bound tables can be automatically
> deallocated when one memory area is unmapped.
>
> Signed-off-by: Qiaowei Ren <[email protected]>
> ---
> arch/x86/Kconfig | 4 ++
> arch/x86/include/asm/mpx.h | 9 ++++
> arch/x86/include/asm/processor.h | 16 +++++++
> arch/x86/kernel/mpx.c | 84
> ++++++++++++++++++++++++++++++++++++++
> include/uapi/linux/prctl.h | 6 +++
> kernel/sys.c | 12 +++++
> 6 files changed, 131 insertions(+), 0 deletions(-)
Hm. What is the expected typical frequency of these syscalls for a
larger application like a web browser? Only once per startup
typically, or will they be called more frequently?
Thanks,
Ingo
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