Date: Wed, 22 Sep 2004 09:52:46 +0400 From: Andrew Belashov <bel@orel.ru> To: freebsd-threads@freebsd.org Cc: Julian Elischer <julian@elischer.org> Subject: Re: Bug in kse_switchin()? Message-ID: <4151132E.8030904@orel.ru> In-Reply-To: <Pine.GSO.4.43.0409211609030.26864-100000@sea.ntplx.net> References: <Pine.GSO.4.43.0409211609030.26864-100000@sea.ntplx.net>
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Daniel Eischen wrote: > On Tue, 21 Sep 2004, Julian Elischer wrote: > >>Andrew Belashov wrote: >> >> >>>See sys/kern/kern_kse.c >>> >>>In line with "suword32(&uap->tmbx->tm_lwp, td->td_tid)" kernel >>>not check return value (error state). This is correct? >> >> >>yes and no. >> >>You are correct. >>It is never correct to "not check" however we have just looked at that >>location 7 lines earlier, so we know >>that the page in question is loaded and valid. This is is "prbably safe". >> >>Probably we should look at the error value also, even if this is true. > > > Julian, you missed an important question below. It looks > like he's trying to get this working with sparc64 and the > suword32 is generating an alignment exception. > > Is lwpid_t 64-bit on sparc64 or is it somehow not being aligned > properly within the mailbox? lwpid_t on sparc64 is 32-bit (typedef __int32_t __lwpid_t). What about using copyout? -- With best regards, Andrew Belashov.
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