linux-kernel - Re: [PATCH v8 10/16] x86/virt/tdx: Allocate and set up PAMTs for TDMRs

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Date:   Tue, 10 Jan 2023 00:47:35 +0000
From:   "Huang, Kai" <kai.huang@...el.com>
To:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "Luck, Tony" <tony.luck@...el.com>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Yamahata, Isaku" <isaku.yamahata@...el.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Shahar, Sagi" <sagis@...gle.com>,
        "imammedo@...hat.com" <imammedo@...hat.com>,
        "Gao, Chao" <chao.gao@...el.com>,
        "Brown, Len" <len.brown@...el.com>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "Huang, Ying" <ying.huang@...el.com>,
        "Williams, Dan J" <dan.j.williams@...el.com>
Subject: Re: [PATCH v8 10/16] x86/virt/tdx: Allocate and set up PAMTs for
 TDMRs

On Fri, 2023-01-06 at 16:47 -0800, Dave Hansen wrote:
> On 12/8/22 22:52, Kai Huang wrote:
> > @@ -574,6 +774,11 @@ static int init_tdx_module(void)
> >  	 *  Return error before all steps are done.
> >  	 */
> >  	ret = -EINVAL;
> > +	if (ret)
> > +		tdmrs_free_pamt_all(&tdmr_list);
> > +	else
> > +		pr_info("%lu pages allocated for PAMT.\n",
> > +				tdmrs_count_pamt_pages(&tdmr_list));
> 
> Could you please convert this to megabytes or kilobytes?  dmesg is for
> humans and humans don't generally know how large their systems or DIMMs
> are in pages without looking or grabbing a calculator.

Will convert to print out kilobytes.