kernel August 2022

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[OS-BUILD PATCH] Add wildcard macros -baseonly -gcov
by Don Zickus (via Email Bridge) 18 Sep '24

18 Sep '24

From: Don Zickus <dzickus(a)redhat.com> Add wildcard macros -baseonly -gcov There are multiple usecases for -baseonly and -gcov on various targets in the Makefile. Instead of calling those targets out repeatedly, lets generalize them a bit. Allow adding -baseonly and -gcov to: dist-rpm dist-srpm dist-brew dist-koji distg-brew distg-koji Gcov is useful for adding code coverage. Baseonly is useful to only build the kernel for debugging purposes without userspace tools. Signed-off-by: Don Zickus <dzickus(a)redhat.com> diff --git a/redhat/Makefile b/redhat/Makefile index blahblah..blahblah 100644 --- a/redhat/Makefile +++ b/redhat/Makefile @@ -297,6 +297,12 @@ dist-sources: dist-kabi dist-kabi-dup sources-rh dist-test-patch: generate-testpatch-tmp @mv $(TESTPATCH).tmp $(TESTPATCH); +%-baseonly: RPMBUILDOPTS=--target $(MACH) --without debug --without debuginfo --without vdso_install --without bpftool --without perf --without tools --without selftests -bb +%-baseonly: BUILDOPTS+=-debug -debuginfo -vdso_install -bpftool -perf -tools -selftests + +%-gcov: BUILDID=".gcov" +%-gcov: BUILDOPTS+="+gcov" + do-rpmbuild: dist-sources $(RPMBUILD) --define "_sourcedir $(SOURCES)" --define "_builddir $(RPM)/BUILD" --define "_srcrpmdir $(RPM)/SRPMS" --define "_rpmdir $(RPM)/RPMS" --define "_specdir $(RPM)/SPECS" --define "dist $(DIST)" $(RPMBUILDOPTS) $(RPM)/SOURCES/$(PACKAGE_NAME).spec @@ -306,9 +312,9 @@ dist-all-rpms: dist-sources do-rpmbuild dist-srpm: RPMBUILDOPTS=--nodeps -bs dist-srpm: dist-sources do-rpmbuild -dist-srpm-gcov: BUILDID=".gcov" -dist-srpm-gcov: BUILDOPTS+="+gcov" -dist-srpm-gcov: dist-srpm +dist-srpm-%: dist-srpm + @# phony command to force this to be a target and not variable + @FOO=BAR dist-rpms: RPMBUILDOPTS=--target $(MACH) -bb dist-rpms: dist-sources do-rpmbuild @@ -322,8 +328,7 @@ dist-prep: dist-sources do-rpmbuild dist-perf: RPMBUILDOPTS=--without up --without smp --without zfcpdump --without debug --without doc --without headers --without --without doc --without debuginfo --target $(MACH) -bb dist-perf: dist-sources do-rpmbuild -dist-rpm-baseonly: RPMBUILDOPTS=--target $(MACH) --without debug --without debuginfo --without vdso_install --without bpftool --without perf --without tools -bb -dist-rpm-baseonly: dist-sources do-rpmbuild +dist-rpm-%: dist-sources do-rpmbuild # unless you know what you're doing, you don't want to use the next four ones dist-release-finish: setup-source @@ -388,9 +393,25 @@ distg-koji: BUILD_FLAGS ?= $(KOJI_FLAGS) $(TEST_FLAGS) dist-brew dist-koji: dist-%: dist-srpm $* $(BUILD_PROFILE) build $(BUILD_FLAGS) $(BUILD_TARGET) $(SRPMS)/$(PACKAGE_NAME)-$(KVERSION)-$(PKGRELEASE)$(DIST).src.rpm $(OUTPUT_FILE) +dist-brew-%: dist-brew + @# phony command to force this to be a target and not variable + @FOO=BAR + +dist-koji-%: dist-koji + @# phony command to force this to be a target and not variable + @FOO=BAR + distg-brew distg-koji: distg-%: $* $(BUILD_PROFILE) build $(BUILD_FLAGS) $(BUILD_TARGET) "$(RHGITURL)?redhat/koji#$(RHGITCOMMIT)" +distg-brew-%: dist-brew + @# phony command to force this to be a target and not variable + @FOO=BAR + +distg-koji-%: dist-koji + @# phony command to force this to be a target and not variable + @FOO=BAR + .PHONY: $(REDHAT)/rpm/SOURCES/$(PACKAGE_NAME).spec $(REDHAT)/rpm/SOURCES/$(PACKAGE_NAME).spec: @echo "dist-sources" @@ -469,34 +490,30 @@ dist-full-help: @echo 'Building targets:' @echo ' All RPM/SRPM files will be put under the redhat/rpm/ directory.' @echo '' - @echo ' dist-srpm - Create a source RPM and put it into the redhat/rpm/SRPMS/' + @echo ' dist-srpm@ - Create a source RPM and put it into the redhat/rpm/SRPMS/' @echo ' directory. See the dist-brew target for available options.' - @echo ' dist-srpm-gcov - Create a source RPM with gcov enabled and put it into the' - @echo ' redhat/rpm/SRPMS/ directory.' - @echo ' dist-brew - Create a kernel SRPM and then call brew to build the' + @echo ' dist-brew@ - Create a kernel SRPM and then call brew to build the' @echo ' created SRPM. Add BUILDOPTS="+<opt> -<opt> [...]" to' @echo ' enable/disable build options.' @echo ' Available <opt>s and their default values:' \ $$(sed -n -e 's/^%define with_$[^ \t]*$.*\?_without_.*/+\1/p' \ -e 's/^%define with_$[^ \t]*$.*\?_with_.*/-\1/p' kernel.spec.template | \ grep -v 'only$$') | fmt -80 - @echo ' dist-koji - Create a kernel SRPM and then call koji to build the' + @echo ' dist-koji@ - Create a kernel SRPM and then call koji to build the' @echo ' created SRPM. See the dist-brew target for available' @echo ' options.' - @echo ' distg-brew - Pass HEAD of the current git branch to brew to build an' + @echo ' distg-brew@ - Pass HEAD of the current git branch to brew to build an' @echo ' RPM set. Do not forget to push to the remote repository' @echo ' first. Preceed make command by RHGITCOMMIT=<commitID>' @echo ' specify commit ID to use.' @echo ' To set the remote repo, invoke:' @echo ' git config rhg.url git://<repo_path>' - @echo ' distg-koji - Pass HEAD of the current git branch to koji to build an' + @echo ' distg-koji@ - Pass HEAD of the current git branch to koji to build an' @echo ' RPM set. Do not forget to push to the remote repository' @echo ' first. See the distg-brew target for options and' @echo ' configuration.' - @echo ' dist-rpms - Create the binary RPMS for the kernel.' + @echo ' dist-rpms@ - Create the binary RPMS for the kernel.' @echo ' See the dist-brew target for available options.' - @echo ' dist-rpm-baseonly - Create the binary RPMS for the kernel and modules' - @echo ' (no userspace tools or debuginfo).' @echo ' dist-kernel-<type> - Create binary RPMS for a particular kernel type.' @echo ' Available <type>s:'\ $$(sed -n 's/^%define with_$[^ ]*only$.*/\1/p' kernel.spec.template) @@ -524,6 +541,12 @@ dist-full-help: @echo ' dist-rhel-configs - build ELN configs' @echo ' dist-fedora-configs - build Fedora configs' + @echo '' + @echo 'Wildcard targets: [indicated by '@' above]' + @echo ' *-baseonly - builds only the kernel (disables userspace and debuginfo)' + @echo ' - Examples: dist-srpm-baseonly, dist-brew-baseonly' + @echo ' *-gcov - builds a kernel with gcov enabled' + @echo ' - Examples: dist-srpm-gcov, dist-brew-gcov' @echo '' @echo 'kABI targets:' @echo ' dist-kabi - Create kABI stablelist files in redhat/kabi/kabi-rhel*/' -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1444

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[OS-BUILD PATCHv3 0/2] redhat: introduce RH_KABI_EXCLUDE_WITH_SIZE and enable size checks
by Sabrina Dubroca (via Email Bridge) 16 Nov '23

16 Nov '23

From: Sabrina Dubroca on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1619 This MR introduces a new kABI macro, RH_KABI_EXCLUDE_WITH_SIZE. The implementation is identical to RH_KABI_EXTEND_WITH_SIZE, but the meaning is more in line with RH_KABI_EXCLUDE. The size check and reserved space allows us to exclude an element embedded inside a kABI-protected structure while reserving space for it to grow in the future. The size checks that are part of multiple kABI macros are currently not enabled because the config option to turn them on is missing. Those size checks only make sense on regular builds, so they're disabled on debug kernels. Signed-off-by: Sabrina Dubroca <sdubroca(a)redhat.com> --- include/linux/rh_kabi.h | 26 ++++++++++ redhat/configs/ark/debug/CONFIG_RH_KABI_SIZE_ALIGN_CHECKS | 1 + redhat/configs/ark/generic/CONFIG_RH_KABI_SIZE_ALIGN_CHECKS | 1 + redhat/configs/ark/kgcov/CONFIG_RH_KABI_SIZE_ALIGN_CHECKS | 1 + redhat/configs/common/generic/CONFIG_RH_KABI_SIZE_ALIGN_CHECKS | 1 + Kconfig.redhat | 9 +++ 6 files changed, 39 insertions(+), 0 deletions(-)

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[OS-BUILD PATCHv3 0/0] scriptlets: clean up declared installation dependencies, stop calling kernel-install in chroot or container
by Zbigniew Jędrzejewski-Szmek (via Email Bridge) 07 Feb '23

07 Feb '23

From: Zbigniew Jędrzejewski-Szmek on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1617 NOTE: Truncated patchset due to missing public @redhat.com email address on your GitLab profile at https://gitlab.com/-/profile. Once that is fixed, close and reopen the merge request to retrigger sending the emails. --- redhat/kernel.spec.template | 30 ++++++++++++++---------------- 1 files changed, 14 insertions(+), 16 deletions(-)

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[OS-BUILD PATCH] Add gcc-c++ to BuildRequires
by GitLab Bridge on behalf of jmflinuxtx 20 Dec '22

20 Dec '22

From: "Justin M. Forbes" <jforbes(a)fedoraproject.org> This is required for some of the gcc plugins. Signed-off-by: Justin M. Forbes <jforbes(a)fedoraproject.org> --- redhat/kernel.spec.template | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/redhat/kernel.spec.template b/redhat/kernel.spec.template index 5941924711d4..c8ee1f82c494 100755 --- a/redhat/kernel.spec.template +++ b/redhat/kernel.spec.template @@ -501,7 +501,7 @@ Requires: kernel-modules-uname-r = %{KVERREL}%{?variant} # BuildRequires: kmod, patch, bash, tar, git-core BuildRequires: bzip2, xz, findutils, gzip, m4, perl-interpreter, perl-Carp, perl-devel, perl-generators, make, diffutils, gawk -BuildRequires: gcc, binutils, redhat-rpm-config, hmaccalc, bison, flex +BuildRequires: gcc, binutils, redhat-rpm-config, hmaccalc, bison, flex, gcc-c++ BuildRequires: net-tools, hostname, bc, elfutils-devel BuildRequires: dwarves BuildRequires: python3-devel -- GitLab

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[PATCH 0/3] pre-generated initrd and unified kernels
by Gerd Hoffmann 22 Nov '22

22 Nov '22

Hi, Here is a little patch series to kick off a discussion on pre-generated initrd images and unified kernels. Lets start with a description of the patches: Patch #1 adds a dracut config file, targeting virtual machines. Given that most physical machines have either sata or nvme disks these days it probably boots most physical systems too. Patch #2 adds a sub-package with an initrd image. Patch #3 adds a sub-package with an unified kernel. The goal is to move away from initrd images being generated on the installed machine. They are generated while building the kernel package instead. Main motivation for this move is to make the distro more robust and more secure. When shipping the initrd as rpm it is possible to check it with the usual tools ('rpm --verify' for example). TPM measurements are much more useful because it is possible to pre-calculate the PCR values for a given kernel version. When shipping a unified kernel image (containing kernel, initrd, cmdline and signature) we get the additional benefit that the initrd is covered by the signature so secure boot will actually be secure. So, while unified kernels are clearly the better approach it is also the one which needs some changes in various packages. For an initrd image the hooks needed are in place thanks to CoreOS shipping initrd images today. Opt-in by install the sub-rpm and everything JustWorks[tm]. To make unified kernels work smoothly a number of changes are needed (beside the kernel rpm changes): (1) Add support for unified kernels to the kernel update scripts. (/usr/lib/kernel/install.d/*). (2) Add boot loader support for unified kernel images: (a) either switch to sd-boot which already supports this. (b) or add support to grub2 (improve blscfg downstream patch). (3) Support /boot being vfat (depending on #2, sd-boot needs this). (4) Remove configuration information (and secrets) from initrd images and kernel command line. Most important item here is root the filesystem location, which should be doable using https://systemd.io/DISCOVERABLE_PARTITIONS/ for many use cases. Can initially be handled in anaconda kickstart %post scripts. Long-term we need proper support in anaconda (and any other tool used to install or generate cloud images), especially if we want make unified kernel images the default some day. (5) There might be more ... I think the best way forward is to skip the initrd image interim step and try go straight to unified kernel image support, starting with virtual machines & cloud images, when things are working smoothly there go expand to cover more use cases. I think it makes sense to start with the kernel changes. Comments? Reviews? Suggestions? thanks & take care, Gerd Daniel P. Berrangé (1): [testing] add a kernel-unified-virt sub-RPM Gerd Hoffmann (2): [testing] virtual machine dracut config [testing] add a kernel-initrd-virt sub-RPM dracut-virt.conf | 26 +++++++++++++++++++ kernel.spec | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 91 insertions(+) create mode 100644 dracut-virt.conf -- 2.37.2

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[OS-BUILD PATCH 0/2] Reduce disk space requirements of the kernel build
by Ondrej Mosnáček (via Email Bridge) 04 Oct '22

04 Oct '22

From: Ondrej Mosnáček on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1950 Two small spec file tweaks to reduce the disk space footprint of the kernel build. This is useful for custom/local builds - for example it makes it more feasible to build the kernel on tmpfs (to reduce HDD/SSD wear and speed up the build a bit) or on small VM instances. Please consider merging so I don't have to carry this in a local branch :slight_smile: --- redhat/kernel.spec.template | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-)

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[OS-BUILD PATCHv5 0/0] redhat/configs: Enable INIT_STACK_ALL_ZERO for Fedora
by Miko Larsson (via Email Bridge) 27 Sep '22

27 Sep '22

From: Miko Larsson on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1923 NOTE: Truncated patchset since committer email 'miko(a)sakura.myxoz.lan' does not match the submitter's GitLab public email address 'mikoxyzzz(a)gmail.com'. In !961, it was proposed that STRUCTLEAK_BYREF_ALL should be enabled, but that specific proposal was rejected due to structleak being a GCC plugin. However, in GCC 12, support for INIT_STACK_ALL_ZERO was introduced, which (if I'm not mistaken) is functionally identical to STRUCTLEAK_BYREF_ALL, so we should probably enable this for Fedora. Signed-off-by: Miko Larsson <mikoxyzzz(a)gmail.com> --- redhat/configs/common/generic/CONFIG_INIT_STACK_ALL_ZERO => redhat/configs/ark/generic/CONFIG_INIT_STACK_ALL_ZERO | 0 redhat/configs/common/generic/CONFIG_INIT_STACK_NONE => redhat/configs/ark/generic/CONFIG_INIT_STACK_NONE | 0 redhat/configs/fedora/generic/CONFIG_INIT_STACK_ALL_ZERO | 1 + redhat/configs/fedora/generic/CONFIG_INIT_STACK_NONE | 1 + 4 files changed, 2 insertions(+), 0 deletions(-)

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[OS-BUILD PATCH] redhat/configs enable CONFIG_INTEL_IFS
by David Arcari (via Email Bridge) 20 Sep '22

20 Sep '22

From: David Arcari <darcari(a)redhat.com> redhat/configs enable CONFIG_INTEL_IFS This should be enabled in RHEL and Fedora. Signed-off-by: David Arcari <darcari(a)redhat.com> diff --git a/redhat/configs/ark/generic/CONFIG_INTEL_IFS b/redhat/configs/ark/generic/CONFIG_INTEL_IFS deleted file mode 100644 index blahblah..blahblah 0 --- a/redhat/configs/ark/generic/CONFIG_INTEL_IFS +++ /dev/null @@ -1 +0,0 @@ -# CONFIG_INTEL_IFS is not set diff --git a/redhat/configs/fedora/generic/x86/CONFIG_INTEL_IFS b/redhat/configs/common/generic/x86/CONFIG_INTEL_IFS rename from redhat/configs/fedora/generic/x86/CONFIG_INTEL_IFS rename to redhat/configs/common/generic/x86/CONFIG_INTEL_IFS index blahblah..blahblah 100644 --- a/redhat/configs/fedora/generic/x86/CONFIG_INTEL_IFS +++ b/redhat/configs/common/generic/x86/CONFIG_INTEL_IFS -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1981

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[OS-BUILD PATCH] redhat: Set CONFIG_MAXLINEAR_GPHY to =m
by Petr Oros (via Email Bridge) 02 Sep '22

02 Sep '22

From: Petr Oros <poros(a)redhat.com> redhat: Set CONFIG_MAXLINEAR_GPHY to =m This config enables the support for MaxLinear NICs (GPY115/21x/24x driver) Signed-off-by: Petr Oros <poros(a)redhat.com> diff --git a/redhat/configs/common/generic/CONFIG_MAXLINEAR_GPHY b/redhat/configs/common/generic/CONFIG_MAXLINEAR_GPHY index blahblah..blahblah 100644 --- a/redhat/configs/common/generic/CONFIG_MAXLINEAR_GPHY +++ b/redhat/configs/common/generic/CONFIG_MAXLINEAR_GPHY @@ -1 +1 @@ -# CONFIG_MAXLINEAR_GPHY is not set +CONFIG_MAXLINEAR_GPHY=m -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1859

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[OS-BUILD PATCH 0/0] [redhat] New configs in lib/Kconfig.debug
by CKI Gitlab (via Email Bridge) 31 Aug '22

31 Aug '22

From: CKI Gitlab on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1999 NOTE: Truncated patchset due to missing public @redhat.com email address on your GitLab profile at https://gitlab.com/-/profile. Once that is fixed, close and reopen the merge request to retrigger sending the emails. Hi, As part of the ongoing rebase effort, the following configuration options need to be reviewed. As a reminder, the ARK configuration flow involves moving unreviewed configuration options from the pending directory to the ark directory. In the diff below, options are removed from the pending directory and added to the ark hierarchy. The final options that need to be ACKed are the files that are being added to the ark hierarchy. If the value for a file that is added should be changed, please reply with a better option. Symbol: CPUMASK_KUNIT_TEST [=m] Type : tristate Defined at lib/Kconfig.debug:2032 Prompt: KUnit test for cpumask Depends on: RUNTIME_TESTING_MENU [=y] && KUNIT [=m] Visible if: RUNTIME_TESTING_MENU [=y] && KUNIT [=m] && !KUNIT_ALL_TESTS [=m] Location: Main menu -> Kernel hacking -> Kernel Testing and Coverage -> Runtime Testing (RUNTIME_TESTING_MENU [=y]) --- Cc: Prarit Bhargava <prarit(a)redhat.com> Cc: Aristeu Rozanski <arozansk(a)redhat.com> Cc: Christoph von Recklinghausen <crecklin(a)redhat.com> Cc: Eugene Syromiatnikov <esyromia(a)redhat.com> Cc: "Herton R. Krzesinski" <herton(a)redhat.com> Cc: Nico Pache <npache(a)redhat.com> Cc: Oleg Nesterov <onestero(a)redhat.com> Cc: Rafael Aquini <aquini(a)redhat.com> Signed-off-by: Fedora Kernel Team <kernel-team(a)fedoraproject.org> --- redhat/configs/ark/generic/CONFIG_CPUMASK_KUNIT_TEST | 1 + redhat/configs/pending-ark/generic/CONFIG_CPUMASK_KUNIT_TEST | 15 ------------ redhat/mod-internal.list | 1 + 3 files changed, 2 insertions(+), 15 deletions(-)

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