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

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Message-ID: <20180228210814.GK11576@char.us.oracle.com>
Date:   Wed, 28 Feb 2018 16:08:14 -0500
From:   Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:     Maran Wilson <maran.wilson@...cle.com>
Cc:     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,
        thomas.lendacky@....com, dave.hansen@...ux.intel.com,
        rkrcmar@...hat.com, gregkh@...uxfoundation.org, mchehab@...nel.org,
        hpa@...or.com, linus.walleij@...aro.org, mingo@...hat.com,
        rdunlap@...radead.org, luto@...nel.org, jpoimboe@...hat.com,
        tglx@...utronix.de, bp@...e.de, davem@...emloft.net,
        kirill.shutemov@...ux.intel.com
Subject: Re: [Xen-devel] [RFC PATCH v4 2/7] xen/pvh: Move PVH entry code out
 of Xen specific tree

On Wed, Feb 28, 2018 at 10:27:58AM -0800, Maran Wilson wrote:
> 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>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>

Thank you!
> ---
>  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
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@...ts.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel

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