From: Peter Bergner <bergner@linux.ibm.com>
To: Waldemar Brodkorb <wbx@openadk.org>
Cc: binutils@sourceware.org, Alan Modra <amodra@gmail.com>
Subject: Re: regression with binutils 2.28 for ppc
Date: Thu, 17 Feb 2022 14:03:24 -0600 [thread overview]
Message-ID: <8b8a3144-5c59-786f-a2ba-6f8813d60845@linux.ibm.com> (raw)
In-Reply-To: <Yg4VRvNLrKoJxrzo@waldemar-brodkorb.de>
On 2/17/22 3:28 AM, Waldemar Brodkorb wrote:
> -mcpu=powerpc -mbig-endian -m32 -msoft-float -mcpu=powerpc64 -mno-altivec -mno-vsx
So a 32-bit compile, which is why the assembler complains about ptesync.
You could try adding -Wa,-mppc64 or -Wa,-many to your options as a work around.
Newish GCCs removed passing -many to the assembler and the commit you
mentioned changed handling of sticky cpu options which is exposing the
issue.
The use of those ptesyncs in the kernel really needs to be audited though!
If they are legitimate, then the inline assembler needs to wrap their
use with ".machine push ; .machine ppc64 ; ptesync ; .machine pop".
Peter
next prev parent reply other threads:[~2022-02-17 20:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-16 13:35 Waldemar Brodkorb
2022-02-16 14:32 ` Peter Bergner
2022-02-16 18:24 ` Peter Bergner
2022-02-17 9:28 ` Waldemar Brodkorb
2022-02-17 20:03 ` Peter Bergner [this message]
2022-02-18 1:34 ` Alan Modra
2022-02-18 4:21 ` Peter Bergner
2022-02-20 11:58 ` Alan Modra
2022-02-23 8:51 ` Alan Modra
2022-02-23 17:34 ` Waldemar Brodkorb
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