linux-kernel - Re: [PATCH v3 4/7] x86/paravirt: remove 32-bit support from PARAVIRT

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Date:   Mon, 10 Aug 2020 06:39:44 +0200
From:   Jürgen Groß <jgross@...e.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        xen-devel@...ts.xenproject.org, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Cc:     Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, Deep Shah <sdeep@...are.com>,
        "VMware, Inc." <pv-drivers@...are.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v3 4/7] x86/paravirt: remove 32-bit support from
 PARAVIRT_XXL

On 09.08.20 04:34, Boris Ostrovsky wrote:
> On 8/7/20 4:38 AM, Juergen Gross wrote:
>> @@ -377,10 +373,7 @@ static inline pte_t __pte(pteval_t val)
>>   {
>>   	pteval_t ret;
>>   
>> -	if (sizeof(pteval_t) > sizeof(long))
>> -		ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> 32);
>> -	else
>> -		ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val);
>> +	ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val);
>>   
>>   	return (pte_t) { .pte = ret };
> 
> 
> Can this now simply return (pte_t) ret?

I don't think so, but I can turn it into

   return native_make_pte(PVOP_CALLEE1(...));


Juergen