From: Erik de Castro Lopo <nospam@mega-nerd.com>
To: ultralinux@vger.kernel.org
Subject: Re: SMP Sparc64 : bug in clone?
Date: Mon, 06 May 2002 21:36:09 +0000 [thread overview]
Message-ID: <marc-linux-ultrasparc-102072097620070@msgid-missing> (raw)
In-Reply-To: <marc-linux-ultrasparc-101684978515837@msgid-missing>
On Mon, 6 May 2002 10:25:14 -0400 (EDT)
Noah Beck <noah@noahsark.dyndns.org> wrote:
> On Sun, 5 May 2002, Erik de Castro Lopo wrote:
>
> > Should I be subtract 2047 bytes (unlikely) or 2047 * sizeof (void*) bytes?
>
> The stack bias is in bytes, not words.
OK, I tried this:
#define STACK_SIZE (1<<15)
static void* stack [STACK_SIZE] ;
stack = stack [STACK_SIZE/2] ;
stack = ((char*) stack) - 2047 ;
and still no go (although it did work with the CLONE_VM flag).
> Does the minimum space for a stack frame (176 bytes) need to be subtracted
> as well?
Since I'm starting in the middle of a large array, fiddle factors like this
shouldn't be an issue.
> Also, is CANRESTORE=0 in the new thread?
Now thats a possibility. Isn't this supposed to be set up somewhere inside
the clone() system call?
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo nospam@mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
"Don't be fooled by NT/Exchange propaganda. M$ Exchange is
just plain broken and NT cannot handle the sustained load
of a high-volume remote mail server"
-- Eric S. Raymond in the Fetchmail FAQ
prev parent reply other threads:[~2002-05-06 21:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-23 2:15 SMP Sparc64 : bug in clone? Erik de Castro Lopo
2002-03-23 3:33 ` Erik de Castro Lopo
2002-03-25 7:53 ` Erik de Castro Lopo
2002-03-25 8:12 ` David S. Miller
2002-03-25 8:35 ` Erik de Castro Lopo
2002-03-25 8:36 ` David S. Miller
2002-04-29 20:14 ` David S. Miller
2002-04-29 20:17 ` Erik de Castro Lopo
2002-05-04 23:08 ` Erik de Castro Lopo
2002-05-06 14:25 ` Noah Beck
2002-05-06 21:36 ` Erik de Castro Lopo [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=marc-linux-ultrasparc-102072097620070@msgid-missing \
--to=nospam@mega-nerd.com \
--cc=ultralinux@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).