linux-kernel - [PATCH 2/2] arm64: export __hyp_stub

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Date:   Fri, 15 Nov 2019 09:45:00 +0000
From:   Peng Fan <peng.fan@....com>
To:     "catalin.marinas@....com" <catalin.marinas@....com>,
        "will@...nel.org" <will@...nel.org>
CC:     "allison@...utok.net" <allison@...utok.net>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "james.morse@....com" <james.morse@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jan.kiszka@...mens.com" <jan.kiszka@...mens.com>,
        "ralf.ramsauer@...-regensburg.de" <ralf.ramsauer@...-regensburg.de>,
        Alice Guo <alice.guo@....com>,
        dl-linux-imx <linux-imx@....com>, Peng Fan <peng.fan@....com>
Subject: [PATCH 2/2] arm64: export __hyp_stub_vectors

From: Peng Fan <peng.fan@....com>

External hypervisors, like Jailhouse, need this address when they are
deactivated, in order to restore original state.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/include/asm/virt.h | 2 ++
 arch/arm64/kernel/hyp-stub.S  | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.h
index 0958ed6191aa..b1b48353e3b3 100644
--- a/arch/arm64/include/asm/virt.h
+++ b/arch/arm64/include/asm/virt.h
@@ -62,6 +62,8 @@
  */
 extern u32 __boot_cpu_mode[2];
 
+extern char __hyp_stub_vectors[];
+
 void __hyp_set_vectors(phys_addr_t phys_vector_base);
 void __hyp_reset_vectors(void);
 
diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index f17af9a39562..22b728fb14bd 100644
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@@ -38,6 +38,7 @@ ENTRY(__hyp_stub_vectors)
 	ventry	el1_fiq_invalid			// FIQ 32-bit EL1
 	ventry	el1_error_invalid		// Error 32-bit EL1
 ENDPROC(__hyp_stub_vectors)
+EXPORT_SYMBOL(__hyp_stub_vectors);
 
 	.align 11
 
-- 
2.16.4