linux-kernel - Re: [6.5.0-rc1] unchecked MSR access error: RDMSR from 0xe2 at rIP: 0xffffffff87090227 (native_read_msr+0x7/0x40) (intel_idle_init_cstates

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Message-ID: <20230714215539.GB3273303@hirez.programming.kicks-ass.net>
Date:   Fri, 14 Jul 2023 23:55:39 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Arjan van de Ven <arjan@...ux.intel.com>
Cc:     "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        Bruno Goncalves <bgoncalv@...hat.com>, x86@...nel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [6.5.0-rc1] unchecked MSR access error: RDMSR from 0xe2 at rIP:
 0xffffffff87090227 (native_read_msr+0x7/0x40) (intel_idle_init_cstates_icpu)

On Fri, Jul 14, 2023 at 02:45:21PM -0700, Arjan van de Ven wrote:

> for kvm and hyperv. not for vmware etc.

There's no etc. VMware is the only one not having it. Xen, KVM, HyperV
all have it.

Then the right solution is to have them implement it. And again, even IF
this was a sane thing to do, it would not be in intel_idle.

The other solution is to no use VMware.