Date: Wed, 28 Apr 1999 20:01:20 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Dmitrij Tejblum <dt@freebsd.org> Cc: cvs-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/alpha/alpha pmap.c Message-ID: <Pine.BSF.4.05.9904281958590.41254-100000@herring.nlsystems.com> In-Reply-To: <199904281552.IAA34436@freefall.freebsd.org>
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On Wed, 28 Apr 1999, Dmitrij Tejblum wrote: > dt 1999/04/28 08:52:11 PDT > > Modified files: > sys/alpha/alpha pmap.c > Log: > pmap_emulate_reference: don't ever lose PV_TABLE_MOD bit on page. If > PV_TABLE_REF cleared before PV_TABLE_MOD, the page may get fault on read again. > > On fault on write, pmap_emulate_reference mark the page dirty with > vm_page_dirty. That decrease ill effects of the bug. > > The problem probably become more serious after my rev.1.18 a week ago. Is this connected with the 'pv_table for %x is inconsistent' panic? I have seen this a couple of times recently but I haven't managed to debug it. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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