Date: Thu, 14 Jun 2018 08:36:03 -0500 From: Eric van Gyzen <eric@vangyzen.net> To: Konstantin Belousov <kostikbel@gmail.com>, current@freebsd.org, amd64@freebsd.org Subject: Re: Ryzen public erratas Message-ID: <231dda70-6383-9d5c-d6c3-98e1c784f505@vangyzen.net> In-Reply-To: <20180613103535.GP2493@kib.kiev.ua> References: <20180613103535.GP2493@kib.kiev.ua>
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On 06/13/2018 05:35, Konstantin Belousov wrote: > Today I noted that AMD published the public errata document for Ryzens, > https://developer.amd.com/wp-content/resources/55449_1.12.pdf > > Some of the issues listed there looks quite relevant to the potential > hangs that some people still experience with the machines. I wrote > a script which should apply the recommended workarounds to the erratas > that I find interesting. > > To run it, kldload cpuctl, then apply the latest firmware update to your > CPU, then run the following shell script. Comments indicate the errata > number for the workarounds. > > Please report the results. If the script helps, I will code the kernel > change to apply the workarounds. Kostik: This thread on the -stable list has a lot of positive feedback: https://lists.freebsd.org/pipermail/freebsd-stable/2018-June/089110.html Eric
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