Buildresult: powerpc-fixes/x86_64-defconfig/x86_64-gcc8 built on Nov 21 2020, 02:28

kisskb

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Status:	OK
Date/Time:	Nov 21 2020, 02:28
Duration:	0:02:26.489124
Builder:	ka2
Revision:	powerpc/64s: Trim offlined CPUs from mm_cpumasks (`8077155dce6c20909682788466ddb25af743cb73)`
Target:	powerpc-fixes/x86_64-defconfig/x86_64-gcc8
Branch:	powerpc-fixes
Compiler:	x86_64-gcc8 (x86_64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 8077155dce6c20909682788466ddb25af743cb73^{commit} 8077155dce6c20909682788466ddb25af743cb73 already have revision, skipping fetch # git checkout -q -f -B kisskb 8077155dce6c20909682788466ddb25af743cb73 # git clean -qxdf # < git log -1 # commit 8077155dce6c20909682788466ddb25af743cb73 # Author: Nicholas Piggin <npiggin@gmail.com> # Date: Fri Nov 20 12:57:57 2020 +1000 # # powerpc/64s: Trim offlined CPUs from mm_cpumasks # # When offlining a CPU, powerpc/64s does not flush TLBs, rather it just # leaves the CPU set in mm_cpumasks, so it continues to receive TLBIEs # to manage its TLBs. # # However the exit_flush_lazy_tlbs() function expects that after # returning, all CPUs (except self) have flushed TLBs for that mm, in # which case TLBIEL can be used for this flush. This breaks for offline # CPUs because they don't get the IPI to flush their TLB. This can lead # to stale translations. # # Fix this by clearing the CPU from mm_cpumasks, then flushing all TLBs # before going offline. # # These offlined CPU bits stuck in the cpumask also prevents the cpumask # from being trimmed back to local mode, which means continual broadcast # IPIs or TLBIEs are needed for TLB flushing. This patch prevents that # situation too. # # Signed-off-by: Nicholas Piggin <npiggin@gmail.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20201120025757.325930-3-npiggin@gmail.com # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 8077155dce6c20909682788466ddb25af743cb73 # < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- x86_64_defconfig # < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- Completed OK # rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 # Build took: 0:02:26.489124

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