Re: [RFC PATCH v2 3/6] tpm: add send_recv() ops in tpm_class_ops

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Subject: Re: [RFC PATCH v2 3/6] tpm: add send_recv() ops in tpm_class_ops
From: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Date: Sat, 1 Mar 2025 03:45:10 +0200
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Claudio Carvalho <cclaudio@xxxxxxxxxxxxx>, Peter Huewe <peterhuewe@xxxxxx>, x86@xxxxxxxxxx, Dov Murik <dovmurik@xxxxxxxxxxxxx>, linux-coco@xxxxxxxxxxxxxxx, Dionna Glaze <dionnaglaze@xxxxxxxxxx>, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Joerg Roedel <jroedel@xxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, linux-integrity@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Tom Lendacky <thomas.lendacky@xxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>
In-reply-to: <20250228170720.144739-4-sgarzare@redhat.com>

On Fri, Feb 28, 2025 at 06:07:17PM +0100, Stefano Garzarella wrote:
> +	int (*send_recv)(struct tpm_chip *chip, u8 *buf, size_t buf_len,
> +			 size_t to_send);

Please describe the meaning and purpose of to_send.

BR, Jarkko

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References:
- [RFC PATCH v2 0/6] Enlightened vTPM support for SVSM on SEV-SNP
  - From: Stefano Garzarella
- [RFC PATCH v2 3/6] tpm: add send_recv() ops in tpm_class_ops
  - From: Stefano Garzarella

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