Date: Fri, 24 Feb 2017 12:19:22 -0800 From: hiren panchasara <hiren@strugglingcoder.info> To: "Jonathan T. Looney" <jtl@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r314216 - head/sys/x86/x86 Message-ID: <20170224201922.GA18343@strugglingcoder.info> In-Reply-To: <201702241856.v1OIu150004903@repo.freebsd.org> References: <201702241856.v1OIu150004903@repo.freebsd.org>
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--r5Pyd7+fXNt84Ff3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 02/24/17 at 06:56P, Jonathan T. Looney wrote: > Author: jtl > Date: Fri Feb 24 18:56:00 2017 > New Revision: 314216 > URL: https://svnweb.freebsd.org/changeset/base/314216 >=20 > Log: > We have seen several cases recently where we appear to get a double-fau= lt: > We have an original panic. Then, instead of writing the core to the dump > device, the kernel has a second panic: "smp_targeted_tlb_shootdown: > interrupts disabled". This change is an attempt to fix that second pani= c. > =20 > When the other CPUs are stopped, we can't notify them of the TLB shootd= own, > so we skip that operation. However, when the CPUs come back up, we > invalidate the TLB to ensure they correctly observe any changes to the > page mappings. > =20 > Reviewed by: kib > Sponsored by: Netflix > Differential Revision: https://reviews.freebsd.org/D9786 Can this be MFCd to 11? Cheers, Hiren --r5Pyd7+fXNt84Ff3 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAABCgBmBQJYsJVHXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRBNEUyMEZBMUQ4Nzg4RjNGMTdFNjZGMDI4 QjkyNTBFMTU2M0VERkU1AAoJEIuSUOFWPt/lBv0IAJ18WZy81Zg3cD1Fp4OSh94r Jg+3AAhn8jmRkss6GAXbZQTzviifzLNvKz554+7jdxdL9uBRBMWlStj3KFByO5KV 5kQH8ynpw1BrUh0Ajovhsb1UhyyoMuWisXnTMbLMvDah/ytxOgkAO0fl/n2xGT5G gafmL3zU4+nPDqIyWbPgrssvG/vUZQDkAjemgpVWj8eJzYie7vLAWGs5D4RstJsE K3f+CXQSPPnedSWEpf/cUzRqRZW5cVdyxuFW2fILFDD7N+0cCdmgLA2gljEbj/ww 4eeimJI9ie8WBdo6l2yq+8UKukyJG4Tx2vzsyHUgx49Z6fcFomeL1HujhP72p+w= =9L9k -----END PGP SIGNATURE----- --r5Pyd7+fXNt84Ff3--
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