linux-kernel - Re: [Xen-devel] [PATCH] x86: xen: mmu: Remove unused function

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Message-ID: <CAKXHbyMqeVSQ2MSTdB3vztqCjgviMJ=pjmXuv3a-U2srh8Qekw@mail.gmail.com>
Date:	Tue, 13 Jan 2015 23:55:11 +0100
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Jürgen Groß <jgross@...e.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>, x86@...nel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	David Vrabel <david.vrabel@...rix.com>,
	"H. Peter Anvin" <hpa@...or.com>, xen-devel@...ts.xenproject.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Xen-devel] [PATCH] x86: xen: mmu: Remove unused function

2015-01-12 9:23 GMT+01:00 Jürgen Groß <jgross@...e.com>:
> On 01/11/2015 11:35 PM, Rickard Strandqvist wrote:
>>
>> Remove the function set_pte_mfn() that is not used anywhere.
>>
>> This was partially found by using a static code analysis program called
>> cppcheck.
>
>
> Sorry, you seem not to have checked the newest kernel.
>
> Used by:
>
> xen_do_set_identity_and_remap_chunk()
> xen_remap_memory()
>
> So: Nak.
>
>
> Juergen
>
>
>>
>> Signed-off-by: Rickard Strandqvist
>> <rickard_strandqvist@...ctrumdigital.se>
>> ---
>>   arch/x86/xen/mmu.c |    9 ---------
>>   arch/x86/xen/mmu.h |    2 --
>>   2 files changed, 11 deletions(-)
>>
>> diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
>> index a8a1a3d..6959550 100644
>> --- a/arch/x86/xen/mmu.c
>> +++ b/arch/x86/xen/mmu.c
>> @@ -281,15 +281,6 @@ static void xen_set_pmd(pmd_t *ptr, pmd_t val)
>>         xen_set_pmd_hyper(ptr, val);
>>   }
>>
>> -/*
>> - * Associate a virtual page frame with a given physical page frame
>> - * and protection flags for that frame.
>> - */
>> -void set_pte_mfn(unsigned long vaddr, unsigned long mfn, pgprot_t flags)
>> -{
>> -       set_pte_vaddr(vaddr, mfn_pte(mfn, flags));
>> -}
>> -
>>   static bool xen_batched_set_pte(pte_t *ptep, pte_t pteval)
>>   {
>>         struct mmu_update u;
>> diff --git a/arch/x86/xen/mmu.h b/arch/x86/xen/mmu.h
>> index 73809bb..f2dcf79 100644
>> --- a/arch/x86/xen/mmu.h
>> +++ b/arch/x86/xen/mmu.h
>> @@ -13,8 +13,6 @@ enum pt_level {
>>
>>   bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
>>
>> -void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
>> -
>>   pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long
>> addr, pte_t *ptep);
>>   void  xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long
>> addr,
>>                                   pte_t *ptep, pte_t pte);
>>


Hi

Sorry. I start this too long ago, too much has happened in some parts
of the code :(


Kind regards
Rickard Strandqvist
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