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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199507111846.LAA16428@gndrsh.aac.dev.com>
Subject: Re: cvs commit: src/sys/i386/isa syscons.c syscons.h
To: bde@freefall.cdrom.com (Bruce Evans)
Date: Tue, 11 Jul 1995 11:46:18 -0700 (PDT)
Cc: CVS-commiters@freefall.cdrom.com, cvs-sys@freefall.cdrom.com
In-Reply-To: <199507111834.LAA29765@freefall.cdrom.com> from "Bruce Evans" at Jul 11, 95 11:34:31 am
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> 
> bde         95/07/11 11:34:31
> 
>   Modified:    sys/i386/isa  syscons.c syscons.h
>   Log:
>   Fix races in scstart().  q_to_b() wasn't called at spltty(), so there
>   were two races:
>   - q_to_b() might unexpectedly return 0 (e.g, after a keyboard signal
>     flushes the output queue and isn't echoed).  ansi_put() interprets
>     0 bytes as 4GB...

Might this fix the problem that has been reported as ``switching VT's
at a rate of 1 a second for about 2 to 3 minutes will result in a system
hang?''

-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                 Reliable computers for FreeBSD