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Tue, 24 Mar 2026 00:18:19 -0700 (PDT) X-Received: by 2002:a05:6a00:1d13:b0:81c:717b:9d39 with SMTP id d2e1a72fcca58-82a8c3a5119mr13438016b3a.56.1774336698637; Tue, 24 Mar 2026 00:18:18 -0700 (PDT) Received: from fedora.armenon-thinkpadp16vgen1.bengluru.csb ([49.36.106.26]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82b0409c681sm13597766b3a.37.2026.03.24.00.18.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2026 00:18:18 -0700 (PDT) From: Arun Menon To: linux-kernel@vger.kernel.org Cc: linux-integrity@vger.kernel.org, Jason Gunthorpe , Jarkko Sakkinen , Peter Huewe , Arun Menon Subject: [RFC 4/4] tpm: Increase TPM_BUFSIZE to 64kB for chunking support Date: Tue, 24 Mar 2026 12:48:03 +0530 Message-ID: <20260324071803.324774-5-armenon@redhat.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260324071803.324774-1-armenon@redhat.com> References: <20260324071803.324774-1-armenon@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" - In tpm_common_write() the size of the command is checked against TPM_BUFSIZE. We therefore need to increase the TPM_BUFSIZE to allow support for larger commands. Signed-off-by: Arun Menon --- drivers/char/tpm/tpm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 87d68ddf270a7..a6933eb075296 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -33,7 +33,7 @@ #endif =20 #define TPM_MINOR 224 /* officially assigned */ -#define TPM_BUFSIZE 4096 +#define TPM_BUFSIZE 65536 #define TPM_NUM_DEVICES 65536 #define TPM_RETRY 50 =20 --=20 2.53.0