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Date:   Tue, 17 Jan 2017 17:24:06 +0100
From:   Ralf Baechle <ralf@linux-mips.org>
To:     James Hogan <james.hogan@imgtec.com>
Cc:     linux-mips@linux-mips.org, Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        kvm@vger.kernel.org
Subject: Re: [PATCH 2/30] MIPS: Export pgd/pmd symbols for KVM
Message-ID: <20170117162406.GD24215@linux-mips.org>
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On Fri, Jan 06, 2017 at 01:32:34AM +0000, James Hogan wrote:

> Export pgd_init(), pmd_init(), invalid_pmd_table and
> tlbmiss_handler_setup_pgd to GPL kernel modules so that MIPS KVM can use
> the inline page table management functions and switch between page
> tables:
> 
> - pgd_init() is used inline by pgd_alloc(), which KVM will use to
>   allocate page directory tables for GVA mappings.
> 
> - pmd_init() will be used directly by KVM to initialise newly allocated
>   pmd tables with invalid lower level table pointers.
> 
> - invalid_pmd_table is used by pud_present(), pud_none(), and
>   pud_clear(), which KVM will use to test and clear pud entries.
> 
> - tlbmiss_handler_setup_pgd() will be called by KVM entry code to switch
>   to the appropriate GVA page tables.
> 
> Signed-off-by: James Hogan <james.hogan@imgtec.com>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: "Radim Krčmář" <rkrcmar@redhat.com>
> Cc: linux-mips@linux-mips.org
> Cc: kvm@vger.kernel.org

Acked-by: Ralf Baechle <ralf@linux-mips.org>

  Ralf