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Bug#996243: Error: selected processor does not support `dmb ish' in ARM mode



Source: gcc-11-cross
Version: 11.2.0-9cross1
Severity: normal

[This might be filed against the wrong package, I don't know enough
about the structure of the gcc-cross packages, it might not be related
to gcc in the first place. Accept my excuses if I was wrong.]

Hi,

I am trying to build a 5.14.10 kernel for the Banana Pi, which uses
armhf, cross on an amd64 machine in a debspawn container. This is the
usual way I am building kernels about twice a week, using Debian
unstable. Last time this worked was last week, before gcc-11-cross got
updated to Version 8 and then 9 yesterday.

This doesn't work any more in unstable (first error):
  GEN     usr/initramfs_data.cpio
/var/tmp/ccrp2PJB.s: Assembler messages:
/var/tmp/ccrp2PJB.s:51: Error: selected processor does not support `dmb ish' in ARM mode
/var/tmp/ccrp2PJB.s:60: Error: selected processor does not support `isb ' in ARM mode
/var/tmp/ccrp2PJB.s:63: Error: selected processor does not support `mrrc p15,1,r9,r10,c14' in ARM mode
/var/tmp/ccrp2PJB.s:85: Error: selected processor does not support `dmb ish' in ARM mode
/var/tmp/ccrp2PJB.s:150: Error: selected processor does not support `dmb ish' in ARM mode

Doing exactly the same build in bookworm succeeds.

Pleas advise what I can do to help with isolating this bug. I am kind of
at a loss operating on this level of the compiler-assembler world.

Greetings
Marc



-- System Information:
Debian Release: bookworm/sid
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.14.9-zgws1 (SMP w/12 CPU threads)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8), LANGUAGE=en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)


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