Le 24/08/2020 à 22:48, Giuseppe Sacco a écrit :
Il giorno lun, 24/08/2020 alle 07.17 +0200, Christophe Leroy ha
The Oopses in the video are fixed in 5.9-rc2, see my response to your
Right, I just updated from git and rebuilt the kernel whith
CONFIG_VMAP_STACK not set and the machine boots correctly.
So now we know that your kernel doesn't boot when CONFIG_VMAP_STACK is set.
Can you remind the exact problem ?
latest kernel with CONFIG_VMAP_STACK set stops after writing:
pmac32_cpufreq: registering PowerMac CPU frequency driver
pmac32_cpufreq: Low: 667 MHz, High: 867 Mhz, Boot: 667 MHz
One common problem with CONFIG_VMAP_STACK is when some drivers are
invalidly using buffers in stack for DMA.
Couldn't try with CONFIG_DEBUG_VIRTUAL (without CONFIG_VMAP_STACK) and
see if it triggers some warnings ?
I've just tried: it boots without any special warning. What should I
look for? This is an excerpt of dmesg output about the line it would
If there is no warning, then the issue is something else, bad luck.
Could you increase the loglevel and try again both with and without
VMAP_STACK ? Maybe we'll get more information on where it stops.
[ 6.566984] PowerMac i2c bus pmu 2 registered
[ 6.574879] PowerMac i2c bus pmu 1 registered
[ 6.582634] PowerMac i2c bus mac-io 0 registered
[ 6.590323] i2c i2c-2: No i2c address for
[ 6.598290] PowerMac i2c bus uni-n 1 registered
[ 6.606196] i2c i2c-3: i2c-powermac: modalias failure on
[ 6.614320] PowerMac i2c bus uni-n 0 registered
[ 6.622501] pmac32_cpufreq: Registering PowerMac CPU frequency driver
[ 6.630580] pmac32_cpufreq: Low: 667 Mhz, High: 867 Mhz, Boot: 667 Mhz
[ 6.639518] ledtrig-cpu: registered to indicate activity on CPUs
[ 6.647894] NET: Registered protocol family 10
[ 6.656492] Segment Routing with IPv6
[ 6.664490] mip6: Mobile IPv6
[ 6.672337] NET: Registered protocol family 17
[ 6.680213] mpls_gso: MPLS GSO support