linux-kernel - Re: [PATCH] x86 efi: efi reverve boot service fix

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Date:	Wed, 16 Oct 2013 16:24:03 +0800
From:	Dave Young <dyoung@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	matt@...sole-pimps.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, mjg59@...f.ucam.org,
	James.Bottomley@...senPartnership.com, vgoyal@...hat.com,
	linux-efi@...r.kernel.org
Subject: Re: [PATCH] x86 efi: efi reverve boot service fix

On 10/16/13 at 12:29am, H. Peter Anvin wrote:
> On 10/16/2013 12:11 AM, Dave Young wrote:
> >>
> >> --- linux-2.6.orig/arch/x86/platform/efi/efi.c
> >> +++ linux-2.6/arch/x86/platform/efi/efi.c
> >> @@ -440,7 +440,7 @@ void __init efi_reserve_boot_services(vo
> >>  		 * - Not within any part of the kernel
> >>  		 * - Not the bios reserved area
> >>  		*/
> >> -		if ((start+size >= __pa_symbol(_text)
> >> +		if ((start + size - 1 >= __pa_symbol(_text)
> >>  				&& start <= __pa_symbol(_end)) ||
> >>  			!e820_all_mapped(start, start+size, E820_RAM) ||
> >>  			memblock_is_region_reserved(start, size)) {
> 
> It would be better to change >= to >.

Both are fine to me, will resend with '>'
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