linux-kernel - [PATCH v4 03/10] kvm: arm64: Only define __kvm_ex_table for CONFIG

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Message-Id: <20200922204910.7265-4-dbrazdil@google.com>
Date:   Tue, 22 Sep 2020 21:49:03 +0100
From:   David Brazdil <dbrazdil@...gle.com>
To:     kvmarm@...ts.cs.columbia.edu
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, David Brazdil <dbrazdil@...gle.com>
Subject: [PATCH v4 03/10] kvm: arm64: Only define __kvm_ex_table for CONFIG_KVM

Minor cleanup that only creates __kvm_ex_table ELF section and
related symbols if CONFIG_KVM is enabled. Also useful as more
hyp-specific sections will be added.

Acked-by: Will Deacon <will@...nel.org>
Signed-off-by: David Brazdil <dbrazdil@...gle.com>
---
 arch/arm64/kernel/vmlinux.lds.S | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index fbb13f38d0c5..d14166012e51 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -22,11 +22,15 @@ ENTRY(_text)
 jiffies = jiffies_64;
 
 
+#ifdef CONFIG_KVM
 #define HYPERVISOR_EXTABLE					\
 	. = ALIGN(SZ_8);					\
 	__start___kvm_ex_table = .;				\
 	*(__kvm_ex_table)					\
 	__stop___kvm_ex_table = .;
+#else /* CONFIG_KVM */
+#define HYPERVISOR_EXTABLE
+#endif
 
 #define HYPERVISOR_TEXT					\
 	/*						\
-- 
2.28.0.681.g6f77f65b4e-goog