• Palmer Dabbelt's avatar
    RISC-V: Make __NR_riscv_flush_icache visible to userspace · 9e49a4ed
    Palmer Dabbelt authored
    We were hoping to avoid making this visible to userspace, but it looks
    like we're going to have to because QEMU's user-mode emulation doesn't
    want to emulate a vDSO.  Having vDSO-only system calls was a bit
    unothodox anyway, so I think in this case it's OK to just make the
    actual system call number public.
    
    This patch simply moves the definition of __NR_riscv_flush_icache
    availiable to userspace, which results in the deletion of the now empty
    vdso-syscalls.h.
    
    Changes since v1:
    
    * I've moved the definition into uapi/asm/syscalls.h rathen than
      uapi/asm/unistd.h.  This allows me to keep asm/unistd.h, so we can
      keep the syscall table macros sane.
    * As a side effect of the above, this no longer disables all system
      calls on RISC-V.  Whoops!
    Signed-off-by: default avatarPalmer Dabbelt <palmer@sifive.com>
    9e49a4ed
flush_icache.S 806 Bytes