# git rev-parse -q --verify fad87dbd48156ab940538f052f1820f4b6ed2819^{commit}
fad87dbd48156ab940538f052f1820f4b6ed2819
already have revision, skipping fetch
# git checkout -q -f -B kisskb fad87dbd48156ab940538f052f1820f4b6ed2819
# git clean -qxdf
# < git log -1
# commit fad87dbd48156ab940538f052f1820f4b6ed2819
# Author: Nathan Lynch <nathanl@linux.ibm.com>
# Date:   Thu Feb 22 16:19:14 2024 -0600
# 
#     powerpc/rtas: use correct function name for resetting TCE tables
#     
#     The PAPR spec spells the function name as
#     
#       "ibm,reset-pe-dma-windows"
#     
#     but in practice firmware uses the singular form:
#     
#       "ibm,reset-pe-dma-window"
#     
#     in the device tree. Since we have the wrong spelling in the RTAS
#     function table, reverse lookups (token -> name) fail and warn:
#     
#       unexpected failed lookup for token 86
#       WARNING: CPU: 1 PID: 545 at arch/powerpc/kernel/rtas.c:659 __do_enter_rtas_trace+0x2a4/0x2b4
#       CPU: 1 PID: 545 Comm: systemd-udevd Not tainted 6.8.0-rc4 #30
#       Hardware name: IBM,9105-22A POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NL1060_028) hv:phyp pSeries
#       NIP [c0000000000417f0] __do_enter_rtas_trace+0x2a4/0x2b4
#       LR [c0000000000417ec] __do_enter_rtas_trace+0x2a0/0x2b4
#       Call Trace:
#        __do_enter_rtas_trace+0x2a0/0x2b4 (unreliable)
#        rtas_call+0x1f8/0x3e0
#        enable_ddw.constprop.0+0x4d0/0xc84
#        dma_iommu_dma_supported+0xe8/0x24c
#        dma_set_mask+0x5c/0xd8
#        mlx5_pci_init.constprop.0+0xf0/0x46c [mlx5_core]
#        probe_one+0xfc/0x32c [mlx5_core]
#        local_pci_probe+0x68/0x12c
#        pci_call_probe+0x68/0x1ec
#        pci_device_probe+0xbc/0x1a8
#        really_probe+0x104/0x570
#        __driver_probe_device+0xb8/0x224
#        driver_probe_device+0x54/0x130
#        __driver_attach+0x158/0x2b0
#        bus_for_each_dev+0xa8/0x120
#        driver_attach+0x34/0x48
#        bus_add_driver+0x174/0x304
#        driver_register+0x8c/0x1c4
#        __pci_register_driver+0x68/0x7c
#        mlx5_init+0xb8/0x118 [mlx5_core]
#        do_one_initcall+0x60/0x388
#        do_init_module+0x7c/0x2a4
#        init_module_from_file+0xb4/0x108
#        idempotent_init_module+0x184/0x34c
#        sys_finit_module+0x90/0x114
#     
#     And oopses are possible when lockdep is enabled or the RTAS
#     tracepoints are active, since those paths dereference the result of
#     the lookup.
#     
#     Use the correct spelling to match firmware's behavior, adjusting the
#     related constants to match.
#     
#     Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
#     Fixes: 8252b88294d2 ("powerpc/rtas: improve function information lookups")
#     Reported-by: Gaurav Batra <gbatra@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://msgid.link/20240222-rtas-fix-ibm-reset-pe-dma-window-v1-1-7aaf235ac63c@linux.ibm.com
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 fad87dbd48156ab940538f052f1820f4b6ed2819
# make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# < make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8
# Build took: 0:02:11.186998