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From: Tony Lindgren <tony.lindgren@linux.intel.com>
To: Peter Fang <peter.fang@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	Kiryl Shutsemau <kas@kernel.org>,
	Rick Edgecombe <rick.p.edgecombe@intel.com>,
	Kuppuswamy Sathyanarayanan
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
	kvm@vger.kernel.org, Xiaoyao Li <xiaoyao.li@intel.com>,
	Binbin Wu <binbin.wu@linux.intel.com>
Subject: Re: [PATCH v3 3/4] virt: tdx-guest: Use a variable to store the Quote buffer size
Date: Thu, 3 Sep 2026 09:31:28 +0300	[thread overview]
Message-ID: <apkUQL5KJ7JQqtpY@tlindgre-MOBL1> (raw)
In-Reply-To: <20260729122939.1340412-4-peter.fang@intel.com>

On Wed, Jul 29, 2026 at 05:29:33AM -0700, Peter Fang wrote:
> In preparation for dynamic Quote buffer sizes, replace the fixed size
> constant with a variable.
> 
> The size is currently a constant sprinkled across several places. Store
> it in a variable and have all the users read it from there.
...
> --- a/drivers/virt/coco/tdx-guest/tdx-guest.c
> +++ b/drivers/virt/coco/tdx-guest/tdx-guest.c
> @@ -417,7 +416,8 @@ static int __init tdx_guest_init(void)
>  	if (ret)
>  		goto deinit_mr;
>  
> -	quote_data = alloc_quote_buf();
> +	quote_data_len = GET_QUOTE_BUF_SIZE;
> +	quote_data = alloc_quote_buf(quote_data_len);
>  	if (!quote_data) {
>  		pr_err("Failed to allocate Quote buffer\n");
>  		ret = -ENOMEM;

I assume the quote_data_len does not need to change after init because
of a TDX module update. So:

Reviewed-by: Tony Lindgren <tony.lindgren@linux.intel.com>

  parent reply	other threads:[~2026-09-03  6:31 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-29 12:29 [PATCH v3 0/4] tdx-guest: Make Quote buffer size dynamic Peter Fang
2026-07-29 12:29 ` [PATCH v3 1/4] x86/tdx: Add helper to query maximum TD Quote size Peter Fang
2026-09-03  6:04   ` Tony Lindgren
2026-09-03 22:45     ` Peter Fang
2026-07-29 12:29 ` [PATCH v3 2/4] virt: tdx-guest: Calculate the Quote buffer size safely Peter Fang
2026-07-29 18:29   ` Kuppuswamy Sathyanarayanan
2026-09-03  5:33   ` Xiaoyao Li
2026-09-03  6:05   ` Tony Lindgren
2026-09-03  9:18   ` Binbin Wu
2026-07-29 12:29 ` [PATCH v3 3/4] virt: tdx-guest: Use a variable to store the Quote buffer size Peter Fang
2026-07-29 12:58   ` sashiko-bot
2026-09-03  5:25     ` Peter Fang
2026-07-29 18:47   ` Kuppuswamy Sathyanarayanan
2026-09-02 23:15     ` Peter Fang
2026-09-03  5:59       ` Xiaoyao Li
2026-09-04  1:28         ` Peter Fang
2026-09-03  6:31   ` Tony Lindgren [this message]
2026-09-03  9:17   ` Binbin Wu
2026-07-29 12:29 ` [PATCH v3 4/4] virt: tdx-guest: Allocate Quote buffer dynamically Peter Fang
2026-07-29 12:55   ` sashiko-bot
2026-09-03  7:04     ` Peter Fang
2026-09-03  6:21   ` Xiaoyao Li
2026-09-03  6:33     ` Tony Lindgren
2026-07-29 21:21 ` [PATCH v3 0/4] tdx-guest: Make Quote buffer size dynamic Edgecombe, Rick P
2026-08-11 22:40   ` Edgecombe, Rick P
2026-08-12 14:08     ` Sean Christopherson
2026-08-12 16:02       ` Edgecombe, Rick P
2026-08-12 16:43         ` Sean Christopherson
2026-08-12 17:22           ` Edgecombe, Rick P
2026-08-12 22:37             ` Peter Fang
2026-08-12 22:47               ` Edgecombe, Rick P
2026-08-12 23:10                 ` Sean Christopherson
2026-08-12 23:30                   ` Edgecombe, Rick P
2026-08-13 19:32                     ` Artem Bityutskiy
2026-08-13 20:14                       ` Edgecombe, Rick P
2026-08-14  5:45                         ` Artem Bityutskiy
2026-08-14  7:37                           ` Peter Fang
2026-08-14 15:55                           ` Edgecombe, Rick P
2026-08-15 11:39                             ` Artem Bityutskiy
2026-08-17 17:26                               ` Edgecombe, Rick P
2026-08-18 11:09                                 ` Artem Bityutskiy
2026-08-18 20:37                       ` Sean Christopherson
2026-08-18 23:46                         ` Edgecombe, Rick P
2026-08-19 14:57                         ` Artem Bityutskiy
2026-08-12 23:27                 ` Peter Fang
2026-08-12 21:02         ` Peter Fang
2026-08-27 22:22   ` Peter Fang
2026-08-27 22:41     ` Edgecombe, Rick P

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