Date: Tue, 9 May 2017 12:34:10 +0100 From: Andrew Turner <andrew@fubar.geek.nz> To: Michal Meloun <mmel@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r318021 - in head/sys/arm: arm include Message-ID: <85745E3A-3260-43C7-B134-85BFED786D55@fubar.geek.nz> In-Reply-To: <201705091105.v49B5WAp097952@repo.freebsd.org> References: <201705091105.v49B5WAp097952@repo.freebsd.org>
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> On 9 May 2017, at 12:05, Michal Meloun <mmel@FreeBSD.org> wrote: >=20 > Author: mmel > Date: Tue May 9 11:05:32 2017 > New Revision: 318021 > URL: https://svnweb.freebsd.org/changeset/base/318021 >=20 > Log: > Introduce pmap_remap_vm_attr(), > it allows to remap one VM memattr class to another. >=20 > This function is intent to be used as workaround for various SoC = bugs, > mainly access ordering/sequencing related bugs in crossbar fabric. This seems quite heavy handed to change the attribute for all memory of = a given type. Other architectures have pmap_change_attr to change the = attribute on a specific range of memory. Andrew
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