Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: hppa64-linux-ld: mm/hugetlb.o(.text+0x50dc): cannot reach printk
To:     Helge Deller <deller@gmx.de>
Cc:     Nick Desaulniers <ndesaulniers@google.com>,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        linux-parisc@vger.kernel.org, kbuild-all@lists.01.org,
        LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        kernel test robot <lkp@intel.com>
References: <202101162230.XswE8zOX-lkp@intel.com>
 <CAKwvOd=rrTLc510cEA84BC_zzYVQ0ifPEMhRRtU-cyYPs_E4eA@mail.gmail.com>
 <bed0d008-c5c0-011e-6f1e-fb248f97c009@bell.net>
 <88735d3b-1b56-bc8a-2183-1f9549626002@gmx.de>
 <20210125204720.GA28462@ls3530.fritz.box>
 <4bdf35de-f804-4e9d-cde9-cc6785840a60@gmx.de>
 <627d4b69-79cf-371b-9aa7-d87f26e4f088@bell.net>
 <3564bcea-5781-123f-564e-53289967e9e4@gmx.de>
From:   John David Anglin <dave.anglin@bell.net>
Message-ID: <428d571c-1f68-7a59-3232-9bb362b51a5b@bell.net>
Date:   Mon, 25 Jan 2021 16:17:50 -0500
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.6.1
MIME-Version: 1.0
In-Reply-To: <3564bcea-5781-123f-564e-53289967e9e4@gmx.de>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
Content-Language: en-US
Precedence: bulk

On 2021-01-25 4:13 p.m., Helge Deller wrote:
> On 1/25/21 10:08 PM, John David Anglin wrote:
>> I would suggest the following for this hunk:
>>
>> +    ldil    L%intr_restore, %r2
>> +    BL    preempt_schedule_irq
>> +    ldo     R%intr_restore(%r2), %r2
>>
>>     ldil    L%intr_restore, %r1
>>     b,l    preempt_schedule_irq,%r2
>>     ldo     R%intr_restore(%r1), %r2
>>
>> On PA 2.0 hardware that gives a 22-bit call.
> "BL" is already using "b,l", see #define in arch/parisc/include/asm/assembly.h
>
> The 22-bit weren't sufficient, that's why I changed it too.
Okay but "b,l" only provides a 22-bit branch with %r2 as link register.  You also need to use %r1 in the ldil and ldo instructions.

Dave

-- 
John David Anglin  dave.anglin@bell.net