lkml.org 
[lkml]   [2002]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] Start of compat32.h (again)
>>>>> On Wed, 27 Nov 2002 09:29:18 +0100, Andi Kleen <ak@muc.de> said:

Andi> But the 32bit user space surely doesn't care about any garbage
Andi> in the upper 32bits, no ?

The user-space won't, but the kernel exit path might. Remember that
most compatibility syscalls go straight to the 64-bit syscall
handlers. You're probably hosed anyhow if a 64-bit syscall returns,
say, 0x1ffffffff, but on ia64 I'd still rather play it safe and
consistently have all compatibility syscalls return a 64-bit
sign-extended value like all other syscall handlers ("least surprise"
principle).

--david
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:31    [W:0.091 / U:0.676 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site