linux-kernel - Re: [PATCH v5 6/7] kvm, mem-hotplug: Unpin and remove kvm_arch->apic_access

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Message-ID: <54116CBB.7050505@redhat.com>
Date:	Thu, 11 Sep 2014 11:34:51 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Tang Chen <tangchen@...fujitsu.com>, gleb@...nel.org,
	mtosatti@...hat.com, nadav.amit@...il.com, jan.kiszka@....de
CC:	kvm@...r.kernel.org, laijs@...fujitsu.com,
	isimatu.yasuaki@...fujitsu.com, guz.fnst@...fujitsu.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 6/7] kvm, mem-hotplug: Unpin and remove kvm_arch->apic_access_page.

Il 11/09/2014 07:38, Tang Chen ha scritto:
> +	if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm)) {
> +		struct page *page = gfn_to_page(vmx->vcpu.kvm,
> +				APIC_DEFAULT_PHYS_BASE >> PAGE_SHIFT);
> +		vmcs_write64(APIC_ACCESS_ADDR, page_to_phys(page));
> +		/*
> +		 * Do not pin apic access page in memory so that memory
> +		 * hotplug process is able to migrate it.
> +		 */
> +		put_page(page);
> +	}

Please reuse vcpu_reload_apic_access_page here, too.

Paolo
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