Received-SPF: pass (google.com: domain of linux-kernel+bounces-145913-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C
From: Ashish Kalra <Ashish.Kalra@amd.com>
To: <linux-tip-commits@vger.kernel.org>
CC: <bp@alien8.de>, <thomas.lendacky@amd.com>, <michael.roth@amd.com>,
	<x86@kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 1/2] x86/e820: Expose API to update e820 kexec and firmware tables externally.
Date: Mon, 15 Apr 2024 21:09:10 +0000
Message-ID: <511fcdca720d26a977a427bd21c5f2d668313f65.1713212104.git.ashish.kalra@amd.com>
In-Reply-To: <cover.1713212104.git.ashish.kalra@amd.com>
References: <cover.1713212104.git.ashish.kalra@amd.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Apr 2024 21:09:19.6849
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: b0d2d407-f1e1-4ba0-5340-08dc5d90511d
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com]
X-MS-Exchange-CrossTenant-AuthSource:
	BN1PEPF00004686.namprd03.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8902

From: Ashish Kalra <ashish.kalra@amd.com>

Export the API interfaces to update the e820_table_kexec and
e820_table_firmware.

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
 arch/x86/include/asm/e820/api.h | 3 +++
 arch/x86/kernel/e820.c          | 7 ++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h
index e8f58ddd06d9..09fe1ddcdf2b 100644
--- a/arch/x86/include/asm/e820/api.h
+++ b/arch/x86/include/asm/e820/api.h
@@ -18,6 +18,9 @@ extern void e820__range_add   (u64 start, u64 size, enum e820_type type);
 extern u64  e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
 extern u64  e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type);
 
+extern u64 e820__range_update_kexec(u64 start, u64 size, enum e820_type old_type, enum e820_type  new_type);
+extern u64 e820__range_update_firmware(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
+
 extern void e820__print_table(char *who);
 extern int  e820__update_table(struct e820_table *table);
 extern void e820__update_table_print(void);
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 6f1b379e3b38..c59d1bbbe3f2 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -532,7 +532,12 @@ u64 __init e820__range_update(u64 start, u64 size, enum e820_type old_type, enum
 	return __e820__range_update(e820_table, start, size, old_type, new_type);
 }
 
-static u64 __init e820__range_update_kexec(u64 start, u64 size, enum e820_type old_type, enum e820_type  new_type)
+u64 __init e820__range_update_firmware(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type)
+{
+	return __e820__range_update(e820_table_firmware, start, size, old_type, new_type);
+}
+
+u64 __init e820__range_update_kexec(u64 start, u64 size, enum e820_type old_type, enum e820_type  new_type)
 {
 	return __e820__range_update(e820_table_kexec, start, size, old_type, new_type);
 }
-- 
2.34.1