From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 96DE7328251; Tue, 9 Dec 2025 10:05:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765274746; cv=none; b=TaUHICZh0VCusY9knATCUulecw1/7dkxvpCS8NR424nrOt/0gZfFmcq0DMha73PbcY75o89BYih1saNU1LxLJwvI/1xOFSQTFR2U8aGgjryzpsmDqr7DXpgQhzPquPLMLkQA7D2+Pup5yUn9kzL3g+3bjp7l6/SCvCbyomzxgkk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765274746; c=relaxed/simple; bh=oE+dWh7raBljNqzFEEiZq5W8NQaCOIJje7uZwrEM5pk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YEY5z8P5M6zqa7mWsDYBiLmkMNBQDHcTrQ5JhyXzj0/KSWUWDAaRibzwBZiiw7VU/bPMNtwsNoR2wsNqGOkvuCBn1l7HtNuZVl7JdRXcdZY/FvdZgz58NBsCauEDQdZsi4Oq3Jnwp3+ZWwcq0Hyf1EkS3wZafY/11tJjFZtQJaA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L5rdXR+4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L5rdXR+4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6CC8FC4CEF5; Tue, 9 Dec 2025 10:05:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765274746; bh=oE+dWh7raBljNqzFEEiZq5W8NQaCOIJje7uZwrEM5pk=; h=From:To:Cc:Subject:Date:From; b=L5rdXR+4K5Ngu0TyGcSNPsLBghWR/0TY/PljxUAZZ9RWeye3LJuVXtOSbR2N1NR8b FvkBGZZoH5oQObJFRL8HSfzjVfimXI197xmRyIX5pf4n3TzTn7YpbMO8ZW3HF/+5cq vkbRuuHamipl61VHKPR+m6OutXykZOPWf/66Uppv0CfJyUDHqu3rv5NWWcUFbHkaxH aPvVzIPbkbCma7oXXPSy42VMDXYBDPJ2HvDMCINGAvXa7rcDRqyvhtaL9ZPe1pfzPI OcHkot7CrM3dWF71KmFiApJWrS1g7DsG6QO6wCLw2cqAV7ym2/s8pM5I3+/mLmVl7+ /GzLLT2EL6cbg== From: Jarkko Sakkinen To: linux-integrity@vger.kernel.org Cc: Jarkko Sakkinen , Peter Huewe , Jason Gunthorpe , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v2 0/5] Streamline TPM2 HMAC sessions Date: Tue, 9 Dec 2025 12:05:23 +0200 Message-ID: <20251209100529.1700779-1-jarkko@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Since we cannot at this point cache names of the keys given limitations of the ASN.1 file format, I'll start a fresh patch set. Let's fixup what we can right now. This patch set addresses two major issues in the feature: 1. Dynamic resolution without gain. All kernel sites have at most single handle to authorize. Even if this changes some day this is how it is as of today and we definitely do not want to dictate the future but instead downscale code to the metrics that we have as of today. 2. Eliminate at least one unnnecessary tpm2_read_public() call. Jarkko Sakkinen (5): KEYS: trusted: Remove dead branch from tpm2_unseal_cmd tpm2-sessions: Define TPM2_NAME_MAX_SIZE KEYS: trusted: Re-orchestrate tpm2_read_public() calls tpm2-sessions: Remove AUTH_MAX_NAMES tpm-buf: Remove tpm_buf_append_handle drivers/char/tpm/tpm-buf.c | 25 ---- drivers/char/tpm/tpm-sysfs.c | 2 +- drivers/char/tpm/tpm2-cmd.c | 9 +- drivers/char/tpm/tpm2-sessions.c | 130 ++++++--------------- include/linux/tpm.h | 49 +++++--- security/keys/trusted-keys/trusted_tpm2.c | 134 +++++++++++++--------- 6 files changed, 155 insertions(+), 194 deletions(-) -- 2.52.0