linux-kernel - hppa vDSO and compiler (non-)support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 8 Mar 2022 12:06:55 +0100
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Helge Deller <deller@....de>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        linux-parisc@...r.kernel.org,
        Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: hppa vDSO and compiler (non-)support

Hi,

since the "parisc: Add vDSO support" commit, I can no longer cross-build 
a hppa kernel. I see two issues:

1) CROSS32_COMPILE detection doesn't work here, as openSUSE provides 
hppa-suse-linux-* binaries. It's easy to overcome by 
"CROSS32_COMPILE=hppa-suse-linux-"

2) openSUSE doesn't provide any libc for hppa. So gcc doesn't provide 
libgcc.a and the build of vDSO fails.

So could vDSO be optional on hppa via KConfig?

I used to use the cross compiler to at least compile-check the following 
  tty drivers:
arch/parisc/kernel/pdc_cons.o
drivers/tty/serial/mux.o
drivers/tty/serial/8250/8250_gsc.o

thanks,
-- 
js
suse labs