Bug#718975: Switch to kernel-based firmware loader
On 2013-08-07 23:48 +0200, Michael Biebl wrote: Am 07.08.2013 22:23, schrieb Sven Joachim: On 2013-08-07 13:25 +0200, Michael Biebl wrote: In newer Linux versions, loading the firmware can be done by the kernel itself. We should get the Debian Linux kernel updated to support that. Afaics all that is needed is building with CONFIG_FW_LOADER_USER_HELPER=n (but this needs verification). AFAIK the kernel always tries to load the firmware itself, and CONFIG_FW_LOADER_USER_HELPER=n just removes the fallback to udev (which can result in a 60 seconds delay) if it can't find the firmware. Ah, interesting. I guess this is related to [1] then. Yes, except that this was with Linux 3.2 which does not support firmware loading without a userspace helper. If CONFIG_FW_LOADER_USER_HELPER=n is set, I assume there is no such timeout, if no firmware is found by the kernel? Indeed. I think udev should be fixed to fail immediately rather than after 60 seconds if it doesn't support firmware loading. Maarten Lankhorst has recently posted¹ a patch for that on systemd-devel. Cheers, Sven ¹ http://lists.freedesktop.org/archives/systemd-devel/2013-August/012554.html -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#718975: Switch to kernel-based firmware loader
Package: udev Version: 204-2 Severity: normal Loading firmware from userspace has been deprecated in udev [1] and is scheduled to be removed [2]. It is supposed to be replaced by in-kernel firmware loading. In newer Linux versions, loading the firmware can be done by the kernel itself. We should get the Debian Linux kernel updated to support that. Afaics all that is needed is building with CONFIG_FW_LOADER_USER_HELPER=n (but this needs verification). We should make sure, the jessie Linux kernel supports that and probably keep the userspace firmware loader for another release cycle, to simplify (partial) upgrades. Regarding self-compiled kernels, we could add a NEWS.Debian and/or add a preinst check (if there is a reliable way to detect if the currently running kernel has that kernel config set) Michael [1] http://cgit.freedesktop.org/systemd/systemd/commit/?id=a3bd8447be4ea2ce230eb8ae0e815c04d85fa15a [2] http://cgit.freedesktop.org/systemd/systemd/tree/README?id=4a792f4676e5f8fa86aff8aac09c4b6391dee313#n55 -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable'), (200, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.10-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages udev depends on: ii debconf [debconf-2.0] 1.5.50 ii libacl12.2.52-1 ii libblkid1 2.20.1-5.5 ii libc6 2.17-92 ii libkmod2 9-3 ii libselinux12.1.13-2 ii libudev1 204-2 ii lsb-base 4.1+Debian12 ii procps 1:3.3.8-2 ii sysv-rc2.88dsf-43 ii util-linux 2.20.1-5.5 udev recommends no packages. udev suggests no packages. -- debconf information excluded -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#718975: Switch to kernel-based firmware loader
For completeness sake I've attached a patch for the systemd/udev specific changes. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? From a579b0e4d0a28c068c5f493a326023ca061e85bc Mon Sep 17 00:00:00 2001 From: Michael Biebl bi...@debian.org Date: Wed, 7 Aug 2013 13:35:26 +0200 Subject: [PATCH] Disable userspace firmware loader Closes: #718975 --- debian/extra/initramfs.hook | 2 +- debian/rules| 1 - debian/udev-udeb.install| 1 - 3 files changed, 1 insertion(+), 3 deletions(-) diff --git a/debian/extra/initramfs.hook b/debian/extra/initramfs.hook index ef10b43..8329717 100644 --- a/debian/extra/initramfs.hook +++ b/debian/extra/initramfs.hook @@ -33,7 +33,7 @@ mkdir -p $DESTDIR/etc/udev cp -p /etc/udev/udev.conf $DESTDIR/etc/udev/ mkdir -p $DESTDIR/lib/udev/rules.d/ -for rules in 50-firmware.rules 50-udev-default.rules 60-persistent-storage.rules \ +for rules in 50-udev-default.rules 60-persistent-storage.rules \ 80-drivers.rules 91-permissions.rules \ 64-md-raid.rules 60-persistent-storage-lvm.rules \ 55-dm.rules 60-persistent-storage-dm.rules; do diff --git a/debian/rules b/debian/rules index 2952c3e..7988467 100755 --- a/debian/rules +++ b/debian/rules @@ -10,7 +10,6 @@ CONFFLAGS = \ --with-rootlibdir=/lib/$(DEB_HOST_MULTIARCH) \ --with-sysvinit-path=/etc/init.d \ --with-sysvrcnd-path=/etc \ - --with-firmware-path=/lib/firmware \ --with-debug-shell=/bin/sh \ --enable-libcryptsetup \ --enable-tcpwrap \ diff --git a/debian/udev-udeb.install b/debian/udev-udeb.install index 8d52c8a..2c30bf1 100644 --- a/debian/udev-udeb.install +++ b/debian/udev-udeb.install @@ -3,6 +3,5 @@ bin/udevadm lib/udev/ata_id lib/udev/scsi_id lib/udev/cdrom_id -lib/udev/rules.d/50-firmware.rules lib/udev/rules.d/60-cdrom_id.rules lib/udev/rules.d/60-persistent-input.rules -- 1.8.4.rc1 signature.asc Description: OpenPGP digital signature
Bug#718975: Switch to kernel-based firmware loader
On 2013-08-07 13:25 +0200, Michael Biebl wrote: Package: udev Version: 204-2 Severity: normal Loading firmware from userspace has been deprecated in udev [1] and is scheduled to be removed [2]. It is supposed to be replaced by in-kernel firmware loading. In newer Linux versions, loading the firmware can be done by the kernel itself. We should get the Debian Linux kernel updated to support that. Afaics all that is needed is building with CONFIG_FW_LOADER_USER_HELPER=n (but this needs verification). AFAIK the kernel always tries to load the firmware itself, and CONFIG_FW_LOADER_USER_HELPER=n just removes the fallback to udev (which can result in a 60 seconds delay) if it can't find the firmware. We should make sure, the jessie Linux kernel supports that and probably keep the userspace firmware loader for another release cycle, to simplify (partial) upgrades. In-kernel firmware loading was introduced in Linux 3.7 (and CONFIG_FW_LOADER_USER_HELPER in 3.9), so keeping the userspace loader for jessie is rather desirable. Regarding self-compiled kernels, we could add a NEWS.Debian and/or add a preinst check (if there is a reliable way to detect if the currently running kernel has that kernel config set) I don't think there is such a way, but checking for a kernel = 3.7 would probably be a good idea. Cheers, Sven -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#718975: Switch to kernel-based firmware loader
Am 07.08.2013 22:23, schrieb Sven Joachim: On 2013-08-07 13:25 +0200, Michael Biebl wrote: In newer Linux versions, loading the firmware can be done by the kernel itself. We should get the Debian Linux kernel updated to support that. Afaics all that is needed is building with CONFIG_FW_LOADER_USER_HELPER=n (but this needs verification). AFAIK the kernel always tries to load the firmware itself, and CONFIG_FW_LOADER_USER_HELPER=n just removes the fallback to udev (which can result in a 60 seconds delay) if it can't find the firmware. Ah, interesting. I guess this is related to [1] then. If CONFIG_FW_LOADER_USER_HELPER=n is set, I assume there is no such timeout, if no firmware is found by the kernel? [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717635 -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? signature.asc Description: OpenPGP digital signature
