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Re: [PATCH for-7.1? 0/2] Re-enable ppc32 as a linux-user host

From: Daniel Henrique Barboza
Subject: Re: [PATCH for-7.1? 0/2] Re-enable ppc32 as a linux-user host
Date: Fri, 29 Jul 2022 17:44:45 -0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0

On 7/29/22 14:21, Richard Henderson wrote:
This is, technically, a regression from 6.2, so it's not
implausible to apply before rc1.  Thoughts?

In gitlab #1097 the author comments that:


"there are several distributions still available on 32-bit powerpc, e.g.
Adélie Linux, for now still Void Linux, afaik Debian and OpenSUSE also
still build packages"

I checked these claims. Latest version OpenSuse LEAP doesn't support
ppc32 bits:


The last Debian that supports ppc32 was Debian 8:


"Debian on 32-bit PowerPC (powerpc)
It first became an official release architecture with Debian GNU/Linux 2.2
(potato) and had retained that status until the publication of Debian 9 
The last supported release for 32-bit PowerPC is Debian 8 (jessie)"

And Void Linux doesn't seem to support any PowerPC flavor:


Adélie Linux supports ppc32. I can also add that FreeBSD also supports ppc32.

Checking about/build-platforms.rst I can see that we would only somewhat
care for FreeBSD here, since Debian 8 is already out of our support

All that said, I don't have strong feelings against re-enabling it, specially
because this build issue was deliberated caused by us.

However, after re-enabling it, I would only care about build bugs that are
reproduced on ppc32 FreeBSD.



Richard Henderson (2):
   common-user/host/ppc: Implement safe-syscall.inc.S
   linux-user: Implment host/ppc/host-signal.h

  linux-user/include/host/ppc/host-signal.h |  39 ++++++++
  common-user/host/ppc/safe-syscall.inc.S   | 107 ++++++++++++++++++++++
  2 files changed, 146 insertions(+)
  create mode 100644 linux-user/include/host/ppc/host-signal.h
  create mode 100644 common-user/host/ppc/safe-syscall.inc.S

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