Date: Tue, 18 Feb 2025 15:01:44 -0700 From: Warner Losh <imp@bsdimp.com> To: Mark Millard <marklmi@yahoo.com> Cc: freebsd-arm <freebsd-arm@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: No GENERIC.hints for aarch64 (arm64?), armv7, and more; also /sys/ based paths are referenced but seem to not be universally standard; also which ARCH standard in path? Message-ID: <CANCZdfpeg070CTCqWYBFZKouK3EHsv15kOJ%2B73fnS-0G2zz7LQ@mail.gmail.com> In-Reply-To: <CANCZdfqSG2j7PDenfAC9fboC4hYuq0ND7hxLunO0yosKJ0UjCw@mail.gmail.com> References: <82B278D1-6483-438A-AAA5-DFD809B2E736@yahoo.com> <CANCZdfqSG2j7PDenfAC9fboC4hYuq0ND7hxLunO0yosKJ0UjCw@mail.gmail.com>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] On Tue, Feb 18, 2025 at 2:56 PM Warner Losh <imp@bsdimp.com> wrote: > > > On Sat, Feb 15, 2025 at 10:04 AM Mark Millard <marklmi@yahoo.com> wrote: > >> [This seems likely to not be limited to main [so: 15 as stands]. >> But I'm using main as the example for the issue.] >> >> In: >> >> # man 5 device.hints >> DEVICE.HINTS(5) FreeBSD File Formats Manual >> DEVICE.HINTS(5) >> >> NAME >> device.hints – device resource hints >> >> . . . >> >> FILES >> /boot/device.hints Device resource hints >> file. >> /sys/ARCH/conf/GENERIC.hints Sample resource hints >> for the >> GENERIC kernel. >> /sys/ARCH/conf/NOTES Notes on the kernel >> configuration file and >> device >> resource hints. >> . . . >> >> >> >> For reference: >> >> # find -s / -name GENERIC.hints -print >> /usr/src/sys/amd64/conf/GENERIC.hints >> /usr/src/sys/i386/conf/GENERIC.hints >> /usr/src/sys/powerpc/conf/GENERIC.hints >> >> >> Multiple points: >> >> ) It seems that aarch64 (arm64?) and armv7 (arm?) have no >> such GENERIC.hints file. The same goes for riscv64 >> (riscv?). >> >> The intent for powerpc64 , powerpc64le , and powerpcspe >> may have the same issue. >> >> >> ) At least for how the local systems were installed, there >> is no such place predefined as /sys/ , not even as a >> symbolic link. "man 7 hier" does not list such. >> >> So it seems /sys -> /usr/src/sys is intended. (But >> /usr/src/ need not have been populated, leaving a >> lack of any GENERIC.hints in such a case.) >> >> Best to not to depend on /sys in the notation shown? >> >> >> ) The /ARCH/ reference is unclear vs. MACHINE, >> MACHINE_CPUARCH, and MACHINE_ARCH. The example paths >> existing for GENERIC.hints do not help because they >> all allow MACHINE == MACHINE_CPUARCH , >> MACHINE == MACHINE_ARCH , and >> MACHINE_CPUARCH == MACHINE_ARCH. However, based on the >> NOTE paths: >> > > Like all things kernel, it's MACHINE. > >> >> # find -s /usr/src/ -name NOTES -print | grep /conf/NOTES | more >> /usr/src/sys/amd64/conf/NOTES >> /usr/src/sys/arm/conf/NOTES >> /usr/src/sys/arm64/conf/NOTES >> /usr/src/sys/conf/NOTES >> /usr/src/sys/i386/conf/NOTES >> /usr/src/sys/powerpc/conf/NOTES >> /usr/src/sys/riscv/conf/NOTES >> /usr/src/sys/x86/conf/NOTES >> >> None of of the MACHINE* are right: x86 is not one of >> any of the 3. Otherwise /arm64/conf/NOTES would suggest >> MACHINE as the only possibility if /ARCH/ was uniform >> for relative to the 3 MACHINE* possibilities. So?: >> >> /usr/src/sys/arm64/conf/GENERIC.hints >> /usr/src/sys/arm/conf/GENERIC.hints >> /usr/src/sys/riscv/conf/GENERIC.hints >> >> with no aarch64 , armv7 , powerpc64* , powerpcspe , or >> riscv64 examples? >> > > We store these in /dev/null these days :). > > I'll create empty ones for this. > https://reviews.freebsd.org/D49052 Just to expand a little: These platforms don't have legacy devices they need to hard-wire in various ways, unlike the other platforms. However, people use them to do device instance wiring, so I've created the empty ones. Warner > Warner > > >> === >> Mark Millard >> marklmi at yahoo.com >> >> >> [-- Attachment #2 --] <div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Feb 18, 2025 at 2:56 PM Warner Losh <<a href="mailto:imp@bsdimp.com">imp@bsdimp.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Feb 15, 2025 at 10:04 AM Mark Millard <<a href="mailto:marklmi@yahoo.com" target="_blank">marklmi@yahoo.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">[This seems likely to not be limited to main [so: 15 as stands].<br> But I'm using main as the example for the issue.]<br> <br> In:<br> <br> # man 5 device.hints<br> DEVICE.HINTS(5) FreeBSD File Formats Manual DEVICE.HINTS(5)<br> <br> NAME<br> device.hints – device resource hints<br> <br> . . .<br> <br> FILES<br> /boot/device.hints Device resource hints file.<br> /sys/ARCH/conf/GENERIC.hints Sample resource hints for the<br> GENERIC kernel.<br> /sys/ARCH/conf/NOTES Notes on the kernel<br> configuration file and device<br> resource hints.<br> . . .<br> <br> <br> <br> For reference:<br> <br> # find -s / -name GENERIC.hints -print<br> /usr/src/sys/amd64/conf/GENERIC.hints<br> /usr/src/sys/i386/conf/GENERIC.hints<br> /usr/src/sys/powerpc/conf/GENERIC.hints<br> <br> <br> Multiple points:<br> <br> ) It seems that aarch64 (arm64?) and armv7 (arm?) have no<br> such GENERIC.hints file. The same goes for riscv64<br> (riscv?).<br> <br> The intent for powerpc64 , powerpc64le , and powerpcspe<br> may have the same issue.<br> <br> <br> ) At least for how the local systems were installed, there<br> is no such place predefined as /sys/ , not even as a<br> symbolic link. "man 7 hier" does not list such.<br> <br> So it seems /sys -> /usr/src/sys is intended. (But<br> /usr/src/ need not have been populated, leaving a<br> lack of any GENERIC.hints in such a case.)<br> <br> Best to not to depend on /sys in the notation shown?<br> <br> <br> ) The /ARCH/ reference is unclear vs. MACHINE,<br> MACHINE_CPUARCH, and MACHINE_ARCH. The example paths<br> existing for GENERIC.hints do not help because they<br> all allow MACHINE == MACHINE_CPUARCH ,<br> MACHINE == MACHINE_ARCH , and<br> MACHINE_CPUARCH == MACHINE_ARCH. However, based on the<br> NOTE paths:<br></blockquote><div><br></div><div>Like all things kernel, it's MACHINE.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <br> # find -s /usr/src/ -name NOTES -print | grep /conf/NOTES | more<br> /usr/src/sys/amd64/conf/NOTES<br> /usr/src/sys/arm/conf/NOTES<br> /usr/src/sys/arm64/conf/NOTES<br> /usr/src/sys/conf/NOTES<br> /usr/src/sys/i386/conf/NOTES<br> /usr/src/sys/powerpc/conf/NOTES<br> /usr/src/sys/riscv/conf/NOTES<br> /usr/src/sys/x86/conf/NOTES<br> <br> None of of the MACHINE* are right: x86 is not one of<br> any of the 3. Otherwise /arm64/conf/NOTES would suggest<br> MACHINE as the only possibility if /ARCH/ was uniform<br> for relative to the 3 MACHINE* possibilities. So?:<br> <br> /usr/src/sys/arm64/conf/GENERIC.hints<br> /usr/src/sys/arm/conf/GENERIC.hints<br> /usr/src/sys/riscv/conf/GENERIC.hints<br> <br> with no aarch64 , armv7 , powerpc64* , powerpcspe , or<br> riscv64 examples?<br></blockquote><div><br></div><div>We store these in /dev/null these days :).</div><div><br></div><div>I'll create empty ones for this.</div></div></div></blockquote><div><br></div><div> <a href="https://reviews.freebsd.org/D49052">https://reviews.freebsd.org/D49052</a></div><div><br></div><div>Just to expand a little: These platforms don't have legacy devices</div><div>they need to hard-wire in various ways, unlike the other platforms.</div><div>However, people use them to do device instance wiring, so I've created</div><div>the empty ones.</div><div><br></div><div>Warner</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div>Warner</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> ===<br> Mark Millard<br> marklmi at <a href="http://yahoo.com" rel="noreferrer" target="_blank">yahoo.com</a><br> <br> <br> </blockquote></div></div> </blockquote></div></div>home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfpeg070CTCqWYBFZKouK3EHsv15kOJ%2B73fnS-0G2zz7LQ>