linux-kernel - [PATCH v2 06/11] x86/paravirt: introduce new config option PARAVIRT

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Date:   Mon, 13 Aug 2018 09:37:34 +0200
From:   Juergen Gross <jgross@...e.com>
To:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org,
        x86@...nel.org, virtualization@...ts.linux-foundation.org
Cc:     akataria@...are.com, rusty@...tcorp.com.au,
        boris.ostrovsky@...cle.com, hpa@...or.com, tglx@...utronix.de,
        mingo@...hat.com, peterz@...radead.org,
        Juergen Gross <jgross@...e.com>
Subject: [PATCH v2 06/11] x86/paravirt: introduce new config option PARAVIRT_XXL

A large amount of paravirt ops is used by Xen PV guests only. Add a new
config option PARAVIRT_XXL which is selected by XEN_PV. Later we can
put the Xen PV only paravirt ops under the PARACVIRT_XXL umbrella.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/Kconfig     | 3 +++
 arch/x86/xen/Kconfig | 1 +
 2 files changed, 4 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 887d3a7bb646..3c967b803c21 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -754,6 +754,9 @@ config PARAVIRT
 	  over full virtualization.  However, when run without a hypervisor
 	  the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_XXL
+	bool
+
 config PARAVIRT_DEBUG
 	bool "paravirt-ops debugging"
 	depends on PARAVIRT && DEBUG_KERNEL
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index c1f98f32c45f..dd92d7bd3613 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -18,6 +18,7 @@ config XEN_PV
 	bool "Xen PV guest support"
 	default y
 	depends on XEN
+	select PARAVIRT_XXL
 	select XEN_HAVE_PVMMU
 	select XEN_HAVE_VPMU
 	help
-- 
2.13.7