linux-kernel - [PATCH v7 15/18] x86/Kconfig: enable kexec handover for 64 bits

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Message-ID: <20250501225425.635167-16-changyuanl@google.com>
Date: Thu,  1 May 2025 15:54:22 -0700
From: Changyuan Lyu <changyuanl@...gle.com>
To: linux-kernel@...r.kernel.org
Cc: changyuanl@...gle.com, akpm@...ux-foundation.org, 
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Subject: [PATCH v7 15/18] x86/Kconfig: enable kexec handover for 64 bits

From: Alexander Graf <graf@...zon.com>

Add ARCH_SUPPORTS_KEXEC_HANDOVER for 64 bits to allow enabling of
KEXEC_HANDOVER configuration option.

Signed-off-by: Alexander Graf <graf@...zon.com>
Co-developed-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
Co-developed-by: Changyuan Lyu <changyuanl@...gle.com>
Signed-off-by: Changyuan Lyu <changyuanl@...gle.com>
---
 arch/x86/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 4b9f378e05f6b..d1fb81ffdaafa 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2029,6 +2029,9 @@ config ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG
 config ARCH_SUPPORTS_KEXEC_JUMP
 	def_bool y
 
+config ARCH_SUPPORTS_KEXEC_HANDOVER
+	def_bool X86_64
+
 config ARCH_SUPPORTS_CRASH_DUMP
 	def_bool X86_64 || (X86_32 && HIGHMEM)
 
-- 
2.49.0.906.g1f30a19c02-goog