linux-kernel - Re: [PATCH] x86/xen: fix arbitrary_virt_to

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 15 May 2008 13:58:08 +0100
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Jan Beulich <jbeulich@...ell.com>
CC:	mingo@...e.hu, tglx@...utronix.de, hpa@...or.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/xen: fix arbitrary_virt_to_machine()

Jan Beulich wrote:
> While I realize that the function isn't currently being used, I still
> think an obvious mistake like this should be corrected.
>
> Signed-off-by: Jan Beulich <jbeulich@...ell.com>
>
> --- a/arch/x86/xen/mmu.c
> +++ b/arch/x86/xen/mmu.c
> @@ -60,7 +60,7 @@ xmaddr_t arbitrary_virt_to_machine(unsig
>  {
>  	unsigned int level;
>  	pte_t *pte = lookup_address(address, &level);
> -	unsigned offset = address & PAGE_MASK;
> +	unsigned offset = address & (PAGE_SIZE - 1);
>   

Yeah.  But I'd prefer "~PAGE_MASK".

    J
--
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/