linux-kernel - Re: [PATCH v2 09/10] x86/virt/tdx: Reduce TDMR's reserved areas by using CMRs to find memory holes

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Message-ID: <055622fb-93b9-49a3-804e-c2525edea4a2@intel.com>
Date: Tue, 20 Aug 2024 21:38:37 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Kai Huang <kai.huang@...el.com>, dave.hansen@...el.com,
 kirill.shutemov@...ux.intel.com, bp@...en8.de, tglx@...utronix.de,
 peterz@...radead.org, mingo@...hat.com, hpa@...or.com, seanjc@...gle.com,
 pbonzini@...hat.com, dan.j.williams@...el.com
Cc: x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
 rick.p.edgecombe@...el.com, isaku.yamahata@...el.com, chao.gao@...el.com,
 binbin.wu@...ux.intel.com
Subject: Re: [PATCH v2 09/10] x86/virt/tdx: Reduce TDMR's reserved areas by
 using CMRs to find memory holes

> diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h
> index 861ddf2c2e88..4b43eb774ffa 100644
> --- a/arch/x86/virt/vmx/tdx/tdx.h
> +++ b/arch/x86/virt/vmx/tdx/tdx.h
> @@ -40,6 +40,10 @@
>  #define MD_FIELD_ID_UPDATE_VERSION		0x0800000100000005ULL
>  #define MD_FIELD_ID_INTERNAL_VERSION		0x0800000100000006ULL
>  
> +#define MD_FIELD_ID_NUM_CMRS			0x9000000100000000ULL
> +#define MD_FIELD_ID_CMR_BASE0			0x9000000300000080ULL
> +#define MD_FIELD_ID_CMR_SIZE0			0x9000000300000100ULL

For scripted checking against "global_metadata.json" it might be better
to stick to the same field names e.g.

	MD_FIELD_ID_CMR_BASE0 -> MD_FIELD_ID_CMR_BASE