linux-kernel - Re: [PATCH] x86: let 32bit use apic_ops too

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:	Tue, 15 Jul 2008 12:10:10 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Zachary Amsden" <zach@...are.com>
Cc:	"Suresh Siddha" <suresh.b.siddha@...el.com>,
	"Chris Wright" <chrisw@...s-sol.org>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Rusty Russell" <rusty@...tcorp.com.au>,
	virtualization <virtualization@...ts.osdl.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: let 32bit use apic_ops too - fix

On Tue, Jul 15, 2008 at 12:04 PM, Zachary Amsden <zach@...are.com> wrote:
> On Tue, 2008-07-15 at 11:51 -0700, Suresh Siddha wrote:
>> On Tue, Jul 15, 2008 at 11:38:50AM -0700, Zachary Amsden wrote:
>> >
>> > Nacked-by: Zachary Amsden <zach@...are.com>
>> >
>> > What are you doing here and why aren't you cc-ing the maintainers?
>>
>> Sorry. I was about to bring you into the loop.
>>
>> Yinghai posted 32bit native apic_ops(similar to my 64bit apic ops patch, which
>> is different from pv_apic_ops) which is in tip/x86/x2apic and proposed a fix
>> for VMI case aswell.
>>
>> Based on my understanding, tip/x86/x2apic git commit
>> 94a8c3c2437c8946f1b6c8e0b2c560a7db8ed3c6 is wrong and it should be fixed with
>> something like
>> http://marc.info/?l=linux-kernel&m=121614328831237&w=2
>
> Looks better, but I need to read more context to find out where the
> apic_ops variable comes from; I'll read the list for patches.
>
> You are correct in that we will want to use the same wait_icr_idle
> routine as native hardware; it's not clear from just this patch how that
> happens.
>
> Also, the VMI operations are sensitive to parameter order because they
> interface with an ABI at the other end.  I need to check the parameter
> order for apic read / write is still consistent with the ABI.

http://people.redhat.com/mingo/tip.git/readme.txt

mkdir linux-2.6
cd linux-2.6

git init

git remote add linus
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

git remote add tip
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git

git remote update

git checkout -b tip-latest tip/master

git merge tip/x86/x2apic

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/