linux-kernel - Re: [RFC v2 28/32] x86/tdx: Make pages shared in ioremap()

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Message-ID: <312879fb-d201-a16d-2568-150152044c54@linux.intel.com>
Date:   Fri, 7 May 2021 15:38:56 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Dave Hansen <dave.hansen@...el.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Tony Luck <tony.luck@...el.com>
Cc:     Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        Raj Ashok <ashok.raj@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC v2 28/32] x86/tdx: Make pages shared in ioremap()


On 5/7/2021 2:55 PM, Dave Hansen wrote:
> On 4/26/21 11:01 AM, Kuppuswamy Sathyanarayanan wrote:
>>   static unsigned int __ioremap_check_encrypted(struct resource *res)
>>   {
>> -	if (!sev_active())
>> +	if (!sev_active() && !is_tdx_guest())
>>   		return 0;
> I think it's time to come up with a real name for all of the code that's
> under: (sev_active() || is_tdx_guest()).
>
> "encrypted" isn't it, for sure.

I called it protected_guest() in some other patches.

-Andi