linux-kernel - Re: [RFC PATCH 0/2] kvmclock: fix ABI breakage from PVCLOCK_COUNTS_FROM

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Message-ID: <20150922144633.GA8602@potion.brq.redhat.com>
Date:	Tue, 22 Sep 2015 16:46:34 +0200
From:	Radim Krčmář <rkrcmar@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	Luiz Capitulino <lcapitulino@...hat.com>
Subject: Re: [RFC PATCH 0/2] kvmclock: fix ABI breakage from
 PVCLOCK_COUNTS_FROM_ZERO.

[My mailbox filled between yours two emails, so I have pasted the latter
 one from archives and replied to a wrong one.]

2015-09-21 21:42-0300, Marcelo Tosatti:
> 2015-09-21 19:37-0300, Marcelo Tosatti:
>> Enable counts-from-zero on MSR_KVM_SYSTEM_TIME_NEW:
>> -> Figure out whats wrong with different kvmclock values on hotplug, 
>> and fix it.
> 
> Find data which allows you to differentiate between hotplug of pCPU-0
> and system initialization.

This kind of programminng is exactly what I don't like and won't be
doing.  We should at least be removing previous mistakes when adding new
ones.
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