linux-kernel - [PATCH v4 1/9] platform/x86/intel/ifs: Separate ifs_pkg_auth from ifs

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Message-Id: <20230322003359.213046-2-jithu.joseph@intel.com>
Date:   Tue, 21 Mar 2023 17:33:51 -0700
From:   Jithu Joseph <jithu.joseph@...el.com>
To:     hdegoede@...hat.com, markgross@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        gregkh@...uxfoundation.org, rostedt@...dmis.org,
        jithu.joseph@...el.com, ashok.raj@...el.com, tony.luck@...el.com,
        linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        patches@...ts.linux.dev, ravi.v.shankar@...el.com,
        thiago.macieira@...el.com, athenas.jimenez.gonzalez@...el.com,
        sohil.mehta@...el.com
Subject: [PATCH v4 1/9] platform/x86/intel/ifs: Separate ifs_pkg_auth from ifs_data

In preparation to supporting additional tests, remove ifs_pkg_auth
from per-test scope, as it is only applicable for one test type.

This will simplify ifs_init() flow when multiple tests are added.

Signed-off-by: Jithu Joseph <jithu.joseph@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
---
 drivers/platform/x86/intel/ifs/ifs.h  |  3 +--
 drivers/platform/x86/intel/ifs/core.c | 10 ++++++----
 drivers/platform/x86/intel/ifs/load.c |  6 +++---
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/intel/ifs/ifs.h b/drivers/platform/x86/intel/ifs/ifs.h
index 046e39304fd5..221413b79281 100644
--- a/drivers/platform/x86/intel/ifs/ifs.h
+++ b/drivers/platform/x86/intel/ifs/ifs.h
@@ -201,7 +201,6 @@ union ifs_status {
  * struct ifs_data - attributes related to intel IFS driver
  * @integrity_cap_bit: MSR_INTEGRITY_CAPS bit enumerating this test
  * @loaded_version: stores the currently loaded ifs image version.
- * @pkg_auth: array of bool storing per package auth status
  * @loaded: If a valid test binary has been loaded into the memory
  * @loading_error: Error occurred on another CPU while loading image
  * @valid_chunks: number of chunks which could be validated.
@@ -212,7 +211,6 @@ union ifs_status {
  */
 struct ifs_data {
 	int	integrity_cap_bit;
-	bool	*pkg_auth;
 	int	loaded_version;
 	bool	loaded;
 	bool	loading_error;
@@ -241,6 +239,7 @@ static inline struct ifs_data *ifs_get_data(struct device *dev)
 	return &d->data;
 }
 
+extern bool *ifs_pkg_auth;
 int ifs_load_firmware(struct device *dev);
 int do_core_test(int cpu, struct device *dev);
 const struct attribute_group **ifs_get_groups(void);
diff --git a/drivers/platform/x86/intel/ifs/core.c b/drivers/platform/x86/intel/ifs/core.c
index 206a617c2e02..3176d94b1fe5 100644
--- a/drivers/platform/x86/intel/ifs/core.c
+++ b/drivers/platform/x86/intel/ifs/core.c
@@ -20,6 +20,8 @@ static const struct x86_cpu_id ifs_cpu_ids[] __initconst = {
 };
 MODULE_DEVICE_TABLE(x86cpu, ifs_cpu_ids);
 
+bool *ifs_pkg_auth;
+
 static struct ifs_device ifs_device = {
 	.data = {
 		.integrity_cap_bit = MSR_INTEGRITY_CAPS_PERIODIC_BIST_BIT,
@@ -56,13 +58,13 @@ static int __init ifs_init(void)
 	if (!(msrval & BIT(ifs_device.data.integrity_cap_bit)))
 		return -ENODEV;
 
-	ifs_device.data.pkg_auth = kmalloc_array(topology_max_packages(), sizeof(bool), GFP_KERNEL);
-	if (!ifs_device.data.pkg_auth)
+	ifs_pkg_auth = kmalloc_array(topology_max_packages(), sizeof(bool), GFP_KERNEL);
+	if (!ifs_pkg_auth)
 		return -ENOMEM;
 
 	ret = misc_register(&ifs_device.misc);
 	if (ret) {
-		kfree(ifs_device.data.pkg_auth);
+		kfree(ifs_pkg_auth);
 		return ret;
 	}
 
@@ -72,7 +74,7 @@ static int __init ifs_init(void)
 static void __exit ifs_exit(void)
 {
 	misc_deregister(&ifs_device.misc);
-	kfree(ifs_device.data.pkg_auth);
+	kfree(ifs_pkg_auth);
 }
 
 module_init(ifs_init);
diff --git a/drivers/platform/x86/intel/ifs/load.c b/drivers/platform/x86/intel/ifs/load.c
index c5c24e6fdc43..74a50e99cacd 100644
--- a/drivers/platform/x86/intel/ifs/load.c
+++ b/drivers/platform/x86/intel/ifs/load.c
@@ -192,7 +192,7 @@ static int scan_chunks_sanity_check(struct device *dev)
 	struct ifs_work local_work;
 	int curr_pkg, cpu, ret;
 
-	memset(ifsd->pkg_auth, 0, (topology_max_packages() * sizeof(bool)));
+	memset(ifs_pkg_auth, 0, (topology_max_packages() * sizeof(bool)));
 	ret = validate_ifs_metadata(dev);
 	if (ret)
 		return ret;
@@ -204,7 +204,7 @@ static int scan_chunks_sanity_check(struct device *dev)
 	cpus_read_lock();
 	for_each_online_cpu(cpu) {
 		curr_pkg = topology_physical_package_id(cpu);
-		if (ifsd->pkg_auth[curr_pkg])
+		if (ifs_pkg_auth[curr_pkg])
 			continue;
 		reinit_completion(&ifs_done);
 		local_work.dev = dev;
@@ -215,7 +215,7 @@ static int scan_chunks_sanity_check(struct device *dev)
 			ret = -EIO;
 			goto out;
 		}
-		ifsd->pkg_auth[curr_pkg] = 1;
+		ifs_pkg_auth[curr_pkg] = 1;
 	}
 	ret = 0;
 out:
-- 
2.25.1