linux-kernel - Re: [PATCH v3] x86/msr: Add write msr notrace to avoid the debug codes splash

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Date:   Tue, 25 Oct 2016 13:15:57 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Wanpeng Li <kernellwp@...il.com>, linux-kernel@...r.kernel.org
Cc:     Wanpeng Li <wanpeng.li@...mail.com>,
        Ingo Molnar <mingo@...nel.org>, Mike Galbraith <efault@....de>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v3] x86/msr: Add write msr notrace to avoid the debug
 codes splash



On 25/10/2016 04:58, Wanpeng Li wrote:
> @@ -319,7 +319,7 @@ static void kvm_guest_apic_eoi_write(u32 reg, u32 val)

This needs to be notrace too.

Paolo

>  	 */
>  	if (__test_and_clear_bit(KVM_PV_EOI_BIT, this_cpu_ptr(&kvm_apic_eoi)))
>  		return;
> -	apic_write(APIC_EOI, APIC_EOI_ACK);
> +	apic->native_eoi_write(APIC_EOI, APIC_EOI_ACK);
>  }
>