linux-kernel - Re: [RFC PATCH v1 3/5] KVM: Add paravirt kvm_flush_tlb

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Message-ID: <87mx5olg5r.fsf@linux.vnet.ibm.com>
Date:	Fri, 04 May 2012 10:02:48 +0530
From:	Nikunj A Dadhania <nikunj@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Avi Kivity <avi@...hat.com>, mingo@...e.hu, jeremy@...p.org,
	mtosatti@...hat.com, kvm@...r.kernel.org, x86@...nel.org,
	vatsa@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	hpa@...or.com
Subject: Re: [RFC PATCH v1 3/5] KVM: Add paravirt kvm_flush_tlb_others

On Wed, 02 May 2012 12:20:40 +0200, Peter Zijlstra <peterz@...radead.org> wrote:
[...] 
> diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
> index f96a5b5..8ca33e9 100644
> --- a/include/asm-generic/tlb.h
> +++ b/include/asm-generic/tlb.h
> @@ -19,6 +19,8 @@
>  #include <asm/pgalloc.h>
>  #include <asm/tlbflush.h>
>  
> +static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page);
> +
>  #ifdef CONFIG_HAVE_RCU_TABLE_FREE
>  /*
>   * Semi RCU freeing of the page directories.
> @@ -60,6 +62,13 @@ struct mmu_table_batch {
>  extern void tlb_table_flush(struct mmu_gather *tlb);
>  extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
>  
> +#else
> +
> +static inline void tlb_remove_table(struct mmu_gather *tlb, void *table)
> +{
> +	tlb_remove_page(tlb, page);
>
tlb_remove_page(tlb, table);

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