linux-kernel - Re: [PATCH 3/7] mtrr: Remove use

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 for Android: free password hash cracker in your pocket

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

Date:	Wed, 9 Dec 2009 10:32:57 -0800
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"Micha? Miros?aw" <mirq-linux@...e.qmqm.pl>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH 3/7] mtrr: Remove use_intel()

On Wed, Dec 9, 2009 at 12:52 AM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
>> can you check it with amd64 cpu?
>
> do you have a suspicion that it might be broken?

void __init mtrr_bp_init(void)
{
        u32 phys_addr;

        init_ifs();

        phys_addr = 32;

        if (cpu_has_mtrr) {
                mtrr_if = &generic_mtrr_ops;
                size_or_mask = 0xff000000;                      /* 36 bits */
                size_and_mask = 0x00f00000;
                phys_addr = 36;

and in generic_mtrr_ops
/*
 * Generic structure...
 */
struct mtrr_ops generic_mtrr_ops = {
        .use_intel_if           = 1,
        .set_all                = generic_set_all,

so all cpus that cpuid tell us that there is mtrr support, will all
have use_intel() == 1

YH
--
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/