Date: Fri, 1 Apr 2022 16:23:58 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@freebsd.org> To: Doug Ambrisko <ambrisko@ambrisko.com> Cc: FreeBSD wireless mailing list <wireless@freebsd.org> Subject: Re: rtw88 import to main Message-ID: <alpine.BSF.2.00.2204011614030.68830@ai.fobar.qr> In-Reply-To: <YkcjKdgWuY8Dgo2g@ambrisko.com> References: <alpine.BSF.2.00.2204010010290.68830@ai.fobar.qr> <YkcjKdgWuY8Dgo2g@ambrisko.com>
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On Fri, 1 Apr 2022, Doug Ambrisko wrote: > On Fri, Apr 01, 2022 at 12:32:40AM +0000, Bjoern A. Zeeb wrote: > | I've just pushed Realtek's rtw88 driver into the tree along with > | firmware to support it and man pages. Station mode only. > > [snip] > > | CAVEAT-1: if you have more than 4GB of main memory, the driver will > | likely fail to load firmware or work. Sounds silly these days but hey. > > [snip] > > Another potential hack with the 4GB limit is to use bhyve for the > wireless connectivity and then everything else outside. It's > also handy to limit crashes, backtraces etc. to bhyve and not the > host. Yes, I do that some for development and that got bhyve one or two fixes for passthru in the last months. Cannot wait to have it on arm64 as well. > I've thought of a suspend/resume laptop hack is stop bhyve on > on suspend and then restart it on resume. Then we don't need > suspend/resume support in the driver. There are projects like wifibox which try to do something like this running a Linux inside I believe (though I don't know if suspend/resume is a thing there)? I also don't know how resume will "feel" as it'll take a few seconds extra if you have to completely restart a bhyve on resume. It wasn't until a while ago when people were posting firmware crashes for iwm(4). I think the goal remains to bring us back to more support and while I am sure drm-kmod is less troubled by a 4GB limit than realtek drivers, also remember that what we do here is potentially also helping and/or improving other parts of the system. /bz -- Bjoern A. Zeeb r15:7help
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