# git rev-parse -q --verify 96cb9d0554457086664d3bd10630b11193d863f1^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/crypto master
# git rev-parse -q --verify 96cb9d0554457086664d3bd10630b11193d863f1^{commit}
96cb9d0554457086664d3bd10630b11193d863f1
# git checkout -q -f -B kisskb 96cb9d0554457086664d3bd10630b11193d863f1
# git clean -qxdf
# < git log -1
# commit 96cb9d0554457086664d3bd10630b11193d863f1
# Author: Jason A. Donenfeld <Jason@zx2c4.com>
# Date:   Mon Oct 10 09:06:07 2022 -0600
# 
#     hwrng: bcm2835 - use hwrng_msleep() instead of cpu_relax()
#     
#     Rather than busy looping, yield back to the scheduler and sleep for a
#     bit in the event that there's no data. This should hopefully prevent the
#     stalls that Mark reported:
#     
#     <6>[    3.362859] Freeing initrd memory: 16196K
#     <3>[   23.160131] rcu: INFO: rcu_sched self-detected stall on CPU
#     <3>[   23.166057] rcu:  0-....: (2099 ticks this GP) idle=03b4/1/0x40000002 softirq=28/28 fqs=1050
#     <4>[   23.174895]       (t=2101 jiffies g=-1147 q=2353 ncpus=4)
#     <4>[   23.180203] CPU: 0 PID: 49 Comm: hwrng Not tainted 6.0.0 #1
#     <4>[   23.186125] Hardware name: BCM2835
#     <4>[   23.189837] PC is at bcm2835_rng_read+0x30/0x6c
#     <4>[   23.194709] LR is at hwrng_fillfn+0x71/0xf4
#     <4>[   23.199218] pc : [<c07ccdc8>]    lr : [<c07cb841>]    psr: 40000033
#     <4>[   23.205840] sp : f093df70  ip : 00000000  fp : 00000000
#     <4>[   23.211404] r10: c3c7e800  r9 : 00000000  r8 : c17e6b20
#     <4>[   23.216968] r7 : c17e6b64  r6 : c18b0a74  r5 : c07ccd99  r4 : c3f171c0
#     <4>[   23.223855] r3 : 000fffff  r2 : 00000040  r1 : c3c7e800  r0 : c3f171c0
#     <4>[   23.230743] Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA Thumb  Segment none
#     <4>[   23.238426] Control: 50c5387d  Table: 0020406a  DAC: 00000051
#     <4>[   23.244519] CPU: 0 PID: 49 Comm: hwrng Not tainted 6.0.0 #1
#     
#     Link: https://lore.kernel.org/all/Y0QJLauamRnCDUef@sirena.org.uk/
#     Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
#     Acked-by: Florian Fainelli <f.fainelli@gmail.com>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 96cb9d0554457086664d3bd10630b11193d863f1
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/crypto_powernv_defconfig_powerpc-gcc5
# Build took: 0:02:11.044861