Date: Tue, 7 Jul 2009 10:54:50 -0500 (CDT) From: Mark Tinguely <tinguely@casselton.net> To: mih@semihalf.com, stas@FreeBSD.org, tinguely@casselton.net Cc: freebsd-arm@FreeBSD.org Subject: Re: pmap problem in FreeBSD current Message-ID: <200907071554.n67Fsouv016804@casselton.net> In-Reply-To: <200907071437.n67EbVnX012439@casselton.net>
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Apologies for the noise. I am not familiar with the sf_buf_alloc/sf_buf_free
code and sent a bad code sequence. If we remove the mapping, it has to
come off the active list also:
/*
* Detatch mapped page and release resources back to the system.
*/
void
sf_buf_free(struct sf_buf *sf)
{
#ifndef ARM_USE_SMALL_ALLOC
mtx_lock(&sf_buf_lock);
sf->ref_count--;
if (sf->ref_count == 0) {
TAILQ_INSERT_TAIL(&sf_buf_freelist, sf, free_entry);
nsfbufsused--;
+ pmap_kremove(sf->kva);
+ sf->m = NULL;
+ LIST_REMOVE(sf, list_entry);
if (sf_buf_alloc_want > 0)
wakeup_one(&sf_buf_freelist);
}
mtx_unlock(&sf_buf_lock);
#endif
--Mark Tinguely.
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