linux-kernel - [PATCH RFC 17/39] x86/xen: export vcpu_info and shared

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Message-Id: <20190220201609.28290-18-joao.m.martins@oracle.com>
Date:   Wed, 20 Feb 2019 20:15:47 +0000
From:   Joao Martins <joao.m.martins@...cle.com>
To:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Cc:     Ankur Arora <ankur.a.arora@...cle.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Joao Martins <joao.m.martins@...cle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: [PATCH RFC 17/39] x86/xen: export vcpu_info and shared_info

From: Ankur Arora <ankur.a.arora@...cle.com>

Also remove __init annotations from xen_evtchn_2l/fifo_init().

This allows us to support 2-level event channel ABI on
xen_shim_domain().

Signed-off-by: Ankur Arora <ankur.a.arora@...cle.com>
---
 arch/x86/xen/enlighten.c         | 3 +++
 drivers/xen/events/events_2l.c   | 2 +-
 drivers/xen/events/events_fifo.c | 2 +-
 include/xen/xen-ops.h            | 2 +-
 4 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 750f46ad018a..73b9736e89d2 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -50,6 +50,8 @@ DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info);
 /* Linux <-> Xen vCPU id mapping */
 DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
 EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
+EXPORT_PER_CPU_SYMBOL(xen_vcpu);
+EXPORT_PER_CPU_SYMBOL(xen_vcpu_info);
 
 enum xen_domain_type xen_domain_type = XEN_NATIVE;
 EXPORT_SYMBOL_GPL(xen_domain_type);
@@ -79,6 +81,7 @@ EXPORT_SYMBOL(xen_start_flags);
  * page as soon as fixmap is up and running.
  */
 struct shared_info *HYPERVISOR_shared_info = &xen_dummy_shared_info;
+EXPORT_SYMBOL_GPL(HYPERVISOR_shared_info);
 
 /*
  * Flag to determine whether vcpu info placement is available on all
diff --git a/drivers/xen/events/events_2l.c b/drivers/xen/events/events_2l.c
index 8edef51c92e5..b5acf4b09971 100644
--- a/drivers/xen/events/events_2l.c
+++ b/drivers/xen/events/events_2l.c
@@ -369,7 +369,7 @@ static const struct evtchn_ops evtchn_ops_2l = {
 	.resume	           = evtchn_2l_resume,
 };
 
-void __init xen_evtchn_2l_init(void)
+void xen_evtchn_2l_init(void)
 {
 	pr_info("Using 2-level ABI\n");
 	evtchn_ops = &evtchn_ops_2l;
diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c
index 76b318e88382..453b4b05f238 100644
--- a/drivers/xen/events/events_fifo.c
+++ b/drivers/xen/events/events_fifo.c
@@ -430,7 +430,7 @@ static int xen_evtchn_cpu_dead(unsigned int cpu)
 	return 0;
 }
 
-int __init xen_evtchn_fifo_init(void)
+int xen_evtchn_fifo_init(void)
 {
 	int cpu = smp_processor_id();
 	int ret;
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index 4969817124a8..92fc45075500 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -10,7 +10,7 @@
 #include <xen/interface/vcpu.h>
 
 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
-
+DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
 DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
 static inline uint32_t xen_vcpu_nr(int cpu)
 {
-- 
2.11.0