From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: devel@linuxdriverproject.org, x86@kernel.org
Cc: linux-kernel@vger.kernel.org,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Steven Rostedt <rostedt@goodmis.org>,
Jork Loeser <Jork.Loeser@microsoft.com>,
Simon Xiao <sixiao@microsoft.com>
Subject: [PATCH v2 01/10] x86/hyper-v: include hyperv/ only when CONFIG_HYPERV is set
Date: Wed, 12 Apr 2017 12:43:17 +0200 [thread overview]
Message-ID: <20170412104326.19126-2-vkuznets@redhat.com> (raw)
In-Reply-To: <20170412104326.19126-1-vkuznets@redhat.com>
Code is arch/x86/hyperv/ is only needed when CONFIG_HYPERV is set, the
'basic' support and detection lives in arch/x86/kernel/cpu/mshyperv.c
which is included when CONFIG_HYPERVISOR_GUEST is set.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/Kbuild | 4 +++-
arch/x86/include/asm/mshyperv.h | 9 ++++++++-
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild
index 586b786..3fa0a3c 100644
--- a/arch/x86/Kbuild
+++ b/arch/x86/Kbuild
@@ -8,7 +8,9 @@ obj-$(CONFIG_KVM) += kvm/
obj-$(CONFIG_XEN) += xen/
# Hyper-V paravirtualization support
-obj-$(CONFIG_HYPERVISOR_GUEST) += hyperv/
+ifdef CONFIG_HYPERV
+obj-y += hyperv/
+endif
# lguest paravirtualization support
obj-$(CONFIG_LGUEST_GUEST) += lguest/
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 7c9c895..e654956 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -175,5 +175,12 @@ void hyperv_init(void);
void hyperv_report_panic(struct pt_regs *regs);
bool hv_is_hypercall_page_setup(void);
void hyperv_cleanup(void);
-#endif
+#else /* CONFIG_HYPERV */
+static inline void hyperv_init(void) {}
+static inline bool hv_is_hypercall_page_setup(void)
+{
+ return false;
+}
+static inline hyperv_cleanup(void) {}
+#endif /* CONFIG_HYPERV */
#endif
--
2.9.3
next prev parent reply other threads:[~2017-04-12 10:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-12 10:43 [PATCH v2 00/10] Hyper-V: praravirtualized remote TLB flushing and hypercall improvements Vitaly Kuznetsov
2017-04-12 10:43 ` Vitaly Kuznetsov [this message]
2017-04-12 10:43 ` [PATCH v2 02/10] x86/hyper-v: stash the max number of virtual/logical processor Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 03/10] x86/hyper-v: make hv_do_hypercall() inline Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 04/10] x86/hyper-v: fast hypercall implementation Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 05/10] hyper-v: use fast hypercall for HVCALL_SIGNAL_EVENT Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 06/10] x86/hyper-v: implement rep hypercalls Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 07/10] hyper-v: globalize vp_index Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 08/10] x86/hyper-v: use hypercall for remote TLB flush Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 09/10] x86/hyper-v: support extended CPU ranges for TLB flush hypercalls Vitaly Kuznetsov
2017-04-12 10:43 ` [PATCH v2 10/10] tracing/hyper-v: trace hyperv_mmu_flush_tlb_others() Vitaly Kuznetsov
2017-05-04 20:00 ` [PATCH v2 00/10] Hyper-V: praravirtualized remote TLB flushing and hypercall improvements KY Srinivasan
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