# git rev-parse -q --verify d6e3af06d947d4f23b5698007e9a1a6313d2ed58^{commit} d6e3af06d947d4f23b5698007e9a1a6313d2ed58 already have revision, skipping fetch # git checkout -q -f -B kisskb d6e3af06d947d4f23b5698007e9a1a6313d2ed58 # git clean -qxdf # < git log -1 # commit d6e3af06d947d4f23b5698007e9a1a6313d2ed58 # Author: Greg Kurz # Date: Wed May 15 12:05:01 2019 +0200 # # powerpc/pseries: Fix xive=off command line # # On POWER9, if the hypervisor supports XIVE exploitation mode, the # guest OS will unconditionally requests for the XIVE interrupt mode # even if XIVE was deactivated with the kernel command line xive=off. # Later on, when the spapr XIVE init code handles xive=off, it disables # XIVE and tries to fall back on the legacy mode XICS. # # This discrepency causes a kernel panic because the hypervisor is # configured to provide the XIVE interrupt mode to the guest : # # kernel BUG at arch/powerpc/sysdev/xics/xics-common.c:135! # ... # NIP xics_smp_probe+0x38/0x98 # LR xics_smp_probe+0x2c/0x98 # Call Trace: # xics_smp_probe+0x2c/0x98 (unreliable) # pSeries_smp_probe+0x40/0xa0 # smp_prepare_cpus+0x62c/0x6ec # kernel_init_freeable+0x148/0x448 # kernel_init+0x2c/0x148 # ret_from_kernel_thread+0x5c/0x68 # # Look for xive=off during prom_init and don't ask for XIVE in this # case. One exception though: if the host only supports XIVE, we still # want to boot so we ignore xive=off. # # Similarly, have the spapr XIVE init code to looking at the interrupt # mode negotiated during CAS, and ignore xive=off if the hypervisor only # supports XIVE. # # Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") # Cc: stable@vger.kernel.org # v4.20 # Reported-by: Pavithra R. Prakash # Signed-off-by: Greg Kurz # Reviewed-by: Cédric Le Goater # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 d6e3af06d947d4f23b5698007e9a1a6313d2ed58 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc44x_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/arch/powerpc/boot/dts/virtex440-ml510.dts:335.37-439.6: Warning (pci_bridge): /plb@0/plbv46-pci@85e00000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/virtex440-ml510.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:193:16: 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:331:21: note: 'pdeo' was declared here /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.35': /kisskb/src/net/bridge/br_netlink.c:652:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1851:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1764:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/powerpc/boot/dts/katmai.dts:322.26-361.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/katmai.dts:363.26-402.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/katmai.dts:404.26-443.5: Warning (pci_bridge): /plb/pciex@d40000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/katmai.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x545190) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x55583c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2689534 Bytes = 2626.50 KiB = 2.56 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719662 Bytes = 2655.92 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006000c8 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719760 Bytes = 2656.02 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014d8 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719477 Bytes = 2655.74 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014cc Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2720733 Bytes = 2656.97 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014e0 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719719 Bytes = 2655.98 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014e0 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719468 Bytes = 2655.73 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006001bc Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719620 Bytes = 2655.88 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014e0 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719740 Bytes = 2656.00 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014c0 Image Name: Linux-5.2.0-rc1-gd6e3af06d947 Created: Fri May 31 00:35:45 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2719614 Bytes = 2655.87 KiB = 2.59 MiB Load Address: 00600000 Entry Point: 006014ec Completed OK # rm -rf /kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.6 # Build took: 0:00:41.426698