On 05/12/2015 07:40 PM, Chen Gang wrote:

On 05/12/2015 04:59 PM, Michael Cree wrote:

quoted

On Sun, May 10, 2015 at 02:33:36AM +0800, Chen Gang wrote:

quoted

The related warnings:

    CALL    scripts/checksyscalls.sh
  <stdin>:1238:2: warning: #warning syscall seccomp not implemented [-Wcpp]
  <stdin>:1241:2: warning: #warning syscall getrandom not implemented [-Wcpp]
  <stdin>:1244:2: warning: #warning syscall memfd_create not implemented [-Wcpp]
  <stdin>:1247:2: warning: #warning syscall bpf not implemented [-Wcpp]
  <stdin>:1250:2: warning: #warning syscall execveat not implemented [-Wcpp]

Chen: Have you tested the syscalls you have wired up?

Sorry, no, I didn't.

quoted

I have a suspicion that more is required to wire up the seccomp
syscall.  At least some of the other older architectures had to
implement some extra arch dependent support to implement the seccomp
syscall.  I don't know whether this is necessary or not on Alpha so
was wondering if this has been considered?

At present, I guess (I did not test), it will lead to sys_ni_call(), so
it is really only "wire up".

quoted

Matt:  are you still feeding Alpha patches to Linus?  I suspect there
might be a few other patches other than this one submitted to
linux-alpha that should be applied.

I found another issue when building alpha, I guess, it is valuable to be
fixed (or there was already related patch but did not submitted?):

It is only a building issue, not a bug (for me, it is valuable to be
fixed: only move "kts.tv_nsec *= 1000" to "if (tv) { ... }").

  arch/alpha/kernel/osf_sys.c: In function ‘SyS_osf_settimeofday’:
  arch/alpha/kernel/osf_sys.c:1028:14: warning: ‘kts.tv_nsec’ may be
used uninitialized in this function [-Wmaybe-uninitialized]
    kts.tv_nsec *= 1000;
                ^
  arch/alpha/kernel/osf_sys.c:1016:18: note: ‘kts’ was declared here
    struct timespec kts;
                    ^

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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