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Fri, 15 May 2026 14:14:52 -0700 (PDT) Received: from mimas.lan ([2603:8000:df01:38f7:a6bb:6dff:fecf:e71a]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-134cc3490bcsm9740184c88.15.2026.05.15.14.14.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 May 2026 14:14:52 -0700 (PDT) From: Ross Philipson To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org, iommu@lists.linux.dev Cc: ross.philipson@gmail.com, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, ardb@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@hansenpartnership.com, peterhuewe@gmx.de, jarkko@kernel.org, jgg@ziepe.ca, luto@amacapital.net, nivedita@alum.mit.edu, herbert@gondor.apana.org.au, davem@davemloft.net, corbet@lwn.net, ebiederm@xmission.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, kanth.ghatraju@oracle.com, daniel.kiper@oracle.com, andrew.cooper3@citrix.com, trenchboot-devel@googlegroups.com Subject: [PATCH v16 14/38] tpm/sysfs: Show locality used by kernel Date: Fri, 15 May 2026 14:13:46 -0700 Message-ID: <20260515211410.31440-15-ross.philipson@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260515211410.31440-1-ross.philipson@gmail.com> References: <20260515211410.31440-1-ross.philipson@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260515_141453_592102_90510853 X-CRM114-Status: UNSURE ( 9.55 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org From: "Daniel P. Smith" Expose the current locality used by the kernel TPM driver via the sysfs interface. Co-developed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Daniel P. Smith Signed-off-by: Ross Philipson --- drivers/char/tpm/tpm-sysfs.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c index f5dcadb1ab3c..772c4ae67957 100644 --- a/drivers/char/tpm/tpm-sysfs.c +++ b/drivers/char/tpm/tpm-sysfs.c @@ -308,6 +308,14 @@ static ssize_t tpm_version_major_show(struct device *dev, } static DEVICE_ATTR_RO(tpm_version_major); +static ssize_t locality_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct tpm_chip *chip = to_tpm_chip(dev); + + return sprintf(buf, "%u\n", chip->kernel_locality); +} +static DEVICE_ATTR_RO(locality); + #ifdef CONFIG_TCG_TPM2_HMAC static ssize_t null_name_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -335,6 +343,7 @@ static struct attribute *tpm1_dev_attrs[] = { &dev_attr_durations.attr, &dev_attr_timeouts.attr, &dev_attr_tpm_version_major.attr, + &dev_attr_locality.attr, NULL, }; @@ -343,6 +352,7 @@ static struct attribute *tpm2_dev_attrs[] = { #ifdef CONFIG_TCG_TPM2_HMAC &dev_attr_null_name.attr, #endif + &dev_attr_locality.attr, NULL }; -- 2.47.3