linux-kernel - [RFC PATCH v4 2/7] xen/pvh: Move PVH entry code out of Xen specific tree

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Date:   Wed, 28 Feb 2018 10:27:58 -0800
From:   Maran Wilson <maran.wilson@...cle.com>
To:     pbonzini@...hat.com, jgross@...e.com, boris.ostrovsky@...cle.com,
        roger.pau@...rix.com, andrew.cooper3@...rix.com, hch@...radead.org,
        JBeulich@...e.com, x86@...nel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        rkrcmar@...hat.com, jpoimboe@...hat.com, bp@...e.de,
        kirill.shutemov@...ux.intel.com, thomas.lendacky@....com,
        luto@...nel.org, maran.wilson@...cle.com,
        dave.hansen@...ux.intel.com, davem@...emloft.net,
        gregkh@...uxfoundation.org, mchehab@...nel.org,
        linus.walleij@...aro.org, rdunlap@...radead.org
Subject: [RFC PATCH v4 2/7] xen/pvh: Move PVH entry code out of Xen specific tree

Once hypervisors other than Xen start using the PVH entry point for
starting VMs, we would like the option of being able to compile PVH entry
capable kernels without enabling CONFIG_XEN and all the code that comes
along with that. To allow that, we are moving the PVH code out of Xen and
into files sitting at a higher level in the tree.

This patch is not introducing any code or functional changes, just moving
files from one location to another.

Signed-off-by: Maran Wilson <maran.wilson@...cle.com>
---
 MAINTAINERS                             | 1 +
 arch/x86/Kbuild                         | 3 +++
 arch/x86/{xen/xen-pvh.S => pvh-head.S}  | 0
 arch/x86/{xen/enlighten_pvh.c => pvh.c} | 0
 arch/x86/xen/Makefile                   | 2 --
 5 files changed, 4 insertions(+), 2 deletions(-)
 rename arch/x86/{xen/xen-pvh.S => pvh-head.S} (100%)
 rename arch/x86/{xen/enlighten_pvh.c => pvh.c} (100%)

diff --git a/MAINTAINERS b/MAINTAINERS
index 93a12af4f180..dc89f3a279bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15210,6 +15210,7 @@ L:	xen-devel@...ts.xenproject.org (moderated for non-subscribers)
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
 S:	Supported
 F:	arch/x86/xen/
+F:	arch/x86/*pvh*
 F:	drivers/*/xen-*front.c
 F:	drivers/xen/
 F:	arch/x86/include/asm/xen/
diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild
index 0038a2d10a7a..a4e5e3d348dc 100644
--- a/arch/x86/Kbuild
+++ b/arch/x86/Kbuild
@@ -7,6 +7,9 @@ obj-$(CONFIG_KVM) += kvm/
 # Xen paravirtualization support
 obj-$(CONFIG_XEN) += xen/
 
+obj-$(CONFIG_XEN_PVH) += pvh.o
+obj-$(CONFIG_XEN_PVH) += pvh-head.o
+
 # Hyper-V paravirtualization support
 obj-$(subst m,y,$(CONFIG_HYPERV)) += hyperv/
 
diff --git a/arch/x86/xen/xen-pvh.S b/arch/x86/pvh-head.S
similarity index 100%
rename from arch/x86/xen/xen-pvh.S
rename to arch/x86/pvh-head.S
diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/pvh.c
similarity index 100%
rename from arch/x86/xen/enlighten_pvh.c
rename to arch/x86/pvh.c
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index d83cb5478f54..7e8145b33997 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -21,7 +21,6 @@ obj-y		:= enlighten.o multicalls.o mmu.o irq.o \
 obj-$(CONFIG_XEN_PVHVM)		+= enlighten_hvm.o mmu_hvm.o suspend_hvm.o
 obj-$(CONFIG_XEN_PV)			+= setup.o apic.o pmu.o suspend_pv.o \
 						p2m.o enlighten_pv.o mmu_pv.o
-obj-$(CONFIG_XEN_PVH)			+= enlighten_pvh.o
 
 obj-$(CONFIG_EVENT_TRACING) += trace.o
 
@@ -33,4 +32,3 @@ obj-$(CONFIG_XEN_DEBUG_FS)	+= debugfs.o
 obj-$(CONFIG_XEN_DOM0)		+= vga.o
 obj-$(CONFIG_SWIOTLB_XEN)	+= pci-swiotlb-xen.o
 obj-$(CONFIG_XEN_EFI)		+= efi.o
-obj-$(CONFIG_XEN_PVH)	 	+= xen-pvh.o
-- 
2.16.1