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Date: Sat, 20 Mar 2010 00:27:32 +0100 From: René Bolldorf <xsecute@...glemail.com> To: "H. Peter Anvin" <hpa@...or.com> CC: linux-kernel@...r.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) 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@...glemail.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? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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