linux-kernel - Re: [PATCH v2 10/11] x86/paravirt: move the Xen-only pv_mmu_ops under the PARAVIRT

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Date:   Fri, 24 Aug 2018 16:15:08 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org,
        x86@...nel.org, virtualization@...ts.linux-foundation.org,
        akataria@...are.com, rusty@...tcorp.com.au,
        boris.ostrovsky@...cle.com, hpa@...or.com, tglx@...utronix.de,
        mingo@...hat.com
Subject: Re: [PATCH v2 10/11] x86/paravirt: move the Xen-only pv_mmu_ops under
 the PARAVIRT_XXL umbrella

On 24/08/18 16:12, Peter Zijlstra wrote:
> On Mon, Aug 13, 2018 at 09:37:38AM +0200, Juergen Gross wrote:
>>  struct pv_mmu_ops {
>> +	/* TLB operations */
>> +	void (*flush_tlb_user)(void);
>> +	void (*flush_tlb_kernel)(void);
>> +	void (*flush_tlb_one_user)(unsigned long addr);
>> +	void (*flush_tlb_others)(const struct cpumask *cpus,
>> +				 const struct flush_tlb_info *info);
>> +
>> +	/* Hook for intercepting the destruction of an mm_struct. */
>> +	void (*exit_mmap)(struct mm_struct *mm);
> 
> Right, so I just wrecked that for you by adding a new:
> tlb_remove_table virt function. But I don't suppose that's a difficult
> thing to fix up.

Right. This will stay outside of XXL, I think. :-)


Juergen