linux-kernel - Re: kvm: odd time values since "kvmclock: set scheduler clock stable"

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] [day] [month] [year] [list]

Message-ID: <55647460.1050200@oracle.com>
Date:	Tue, 26 May 2015 09:25:52 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Luiz Capitulino <lcapitulino@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>
CC:	KVM General <kvm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: kvm: odd time values since "kvmclock: set scheduler clock stable"

On 05/26/2015 09:21 AM, Luiz Capitulino wrote:
>> Sasha,
>> > 
>> > Can you give the suggested patch (hypervisor patch...) a try please?
>> > (with a patched guest, obviously).
>> > 
>> > KVM: x86: zero kvmclock_offset when vcpu0 initializes kvmclock system
>> > MSR
> I've tried your v2, it works for me. My test-case is very simple though:
> I just boot a VM, log in and reboot. This reproduces the issue Sasha
> reported 100% of the times for me (don't need multi-vcpu guest either).

Sorry for the delay, we had a long weekend here.

It seems to work fine here, no more jumps when booting.


Thanks,
Sasha
--
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/