Buildresult: powerpc-fixes/gamecube_defconfig/powerpc-gcc4.6 built on Dec 8 2018, 01:37

kisskb

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Status:	OK
Date/Time:	Dec 8 2018, 01:37
Duration:	0:00:42.822966
Builder:	ka2
Revision:	powerpc/mm: Fallback to RAM if the altmap is unusable (`06cfdca71d0b8b58f29f9e18f8cacc1172034971)`
Target:	powerpc-fixes/gamecube_defconfig/powerpc-gcc4.6
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	gamecube_defconfig (download)
Log:	Download original Possible warnings (3) kernel/rcu/srcutree.c:133:33: warning: 'levelspread[<U8320>]' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 06cfdca71d0b8b58f29f9e18f8cacc1172034971^{commit} 06cfdca71d0b8b58f29f9e18f8cacc1172034971 already have revision, skipping fetch # git checkout -q -f -B kisskb 06cfdca71d0b8b58f29f9e18f8cacc1172034971 # git clean -qxdf # < git log -1 # commit 06cfdca71d0b8b58f29f9e18f8cacc1172034971 # Author: Oliver O'Halloran <oohall@gmail.com> # Date: Fri Dec 7 02:17:14 2018 +1100 # # powerpc/mm: Fallback to RAM if the altmap is unusable # # The "altmap" is used to provide a pool of memory that is reserved for # the vmemmap backing of hot-plugged memory. This is useful when adding # large amount of ZONE_DEVICE memory to a system with a limited amount of # normal memory. # # On ppc64 we use huge pages to map the vmemmap which requires the backing # storage to be contigious and aligned to the hugepage size. The altmap # implementation allows for the altmap provider to reserve a few PFNs at # the start of the range for it's own uses and when this occurs the # first chunk of the altmap is not usage for hugepage mappings. On hash # there is no sane way to fall back to a normal sized page mapping so we # fail the allocation. This results in memory hotplug failing with # ENOMEM when the new range doesn't fall into an existing vmemmap block. # # This patch handles this case by falling back to using system memory # rather than failing if we cannot allocate from the altmap. This # fallback should only ever be used for the first vmemmap block so it # should not cause excess memory consumption. # # Fixes: 7b73d978a5d0 ("mm: pass the vmem_altmap to vmemmap_populate") # Signed-off-by: Oliver O'Halloran <oohall@gmail.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 06cfdca71d0b8b58f29f9e18f8cacc1172034971 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_gamecube_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- gamecube_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_gamecube_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields': /kisskb/src/kernel/rcu/srcutree.c:133:33: warning: 'levelspread[<U8320>]' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c:100:6: note: 'levelspread[<U8320>]' was declared here /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:341:21: note: 'pdeo' was declared here INFO: Uncompressed kernel (size 0x6d0518) overlaps the address of the wrapper(0x600000) INFO: Fixing the link_address of wrapper to (0x700000) Completed OK # rm -rf /kisskb/build/powerpc-fixes_gamecube_defconfig_powerpc # Build took: 0:00:42.822966

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