From: "René Bolldorf" <xsecute@googlemail.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] arch/x86/kernel/head_32.S Warning: shift count out of range (32 is not between 0 and 31)
Date: Sat, 20 Mar 2010 00:27:32 +0100 [thread overview]
Message-ID: <4BA40864.3080204@googlemail.com> (raw)
In-Reply-To: <4BA3F088.8040203@zytor.com>
On 03/19/10 22:45, H. Peter Anvin wrote:
> On 03/18/2010 03:08 PM, Ren� Bolldorf wrote:
>> Signed-off-by: Rene Bolldorf<xsecute@googlemail.com>
>>
>> diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
>> index 37c3d4b..8bfba5e 100644
>> --- a/arch/x86/kernel/head_32.S
>> +++ b/arch/x86/kernel/head_32.S
>> @@ -62,7 +62,7 @@
>>
>> /* Enough space to fit pagetables for the low memory linear map */
>> MAPPING_BEYOND_END = \
>> - PAGE_TABLE_SIZE(((1<<32) - __PAGE_OFFSET)>> PAGE_SHIFT)<< PAGE_SHIFT
>> + PAGE_TABLE_SIZE(((1<<31) - __PAGE_OFFSET)>> PAGE_SHIFT)<< PAGE_SHIFT
>>
>> /*
>> * Worst-case size of the kernel mapping we need to make:
>
> NAK... this is in fact doubly wrong... the assembler handles this case
> just fine -- it's a .S file after all -- and the result is wrong.
>
> If you want to change it change it to 0x100000000.
>
> -hpa
The funny thing is even if i change to 0x100000000 or 0 etc., the
compiler warns me. Is this normal or a compiler issue?
prev parent reply other threads:[~2010-03-19 23:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-18 22:08 [PATCH 2/5] arch/x86/kernel/head_32.S Warning: shift count out of range (32 is not between 0 and 31) René Bolldorf
2010-03-19 21:45 ` H. Peter Anvin
2010-03-19 22:43 ` René Bolldorf
2010-03-19 23:27 ` René Bolldorf [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4BA40864.3080204@googlemail.com \
--to=xsecute@googlemail.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.