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Subject: Re: [PATCH] x86/paravirt: Drop {read,write}_cr8() hooks
To:     Andrew Cooper <andrew.cooper3@citrix.com>,
        LKML <linux-kernel@vger.kernel.org>
Cc:     Borislav Petkov <bp@alien8.de>,
        Stephane Eranian <eranian@google.com>,
        Peter Zijlstra <peterz@infradead.org>,
        FengTang <feng.tang@intel.com>,
        Andy Lutomirski <luto@kernel.org>, x86@kernel.org,
        virtualization@lists.linux-foundation.org,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        "Rafael J.Wysocki" <rjw@rjwysocki.net>,
        Pavel Machek <pavel@ucw.cz>,
        Alok Kataria <akataria@vmware.com>,
        Nadav Amit <namit@vmware.com>
References: <20190715130056.10627-1-andrew.cooper3@citrix.com>
From:   Juergen Gross <jgross@suse.com>
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Date:   Mon, 15 Jul 2019 15:22:57 +0200
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On 15.07.19 15:00, Andrew Cooper wrote:
> There is a lot of infrastructure for functionality which is used
> exclusively in __{save,restore}_processor_state() on the suspend/resume
> path.
> 
> cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored
> independently by lapic_{suspend,resume}().

Aren't those called only with CONFIG_PM set?


Juergen