Commit c00a280a authored by Juergen Gross's avatar Juergen Gross Committed by Thomas Gleixner
Browse files

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 PARAVIRT_XXL umbrella.

Since irq related paravirt ops are used only by VSMP and Xen PV, let
VSMP select PARAVIRT_XXL, too, in order to enable moving the irq ops
under PARAVIRT_XXL.

Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: xen-devel@lists.xenproject.org
Cc: virtualization@lists.linux-foundation.org
Cc: akataria@vmware.com
Cc: rusty@rustcorp.com.au
Cc: boris.ostrovsky@oracle.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/20180828074026.820-11-jgross@suse.com
parent 5def7a4c

arch/x86/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -523,6 +523,7 @@ config X86_VSMP 
	bool "ScaleMP vSMP"

	select HYPERVISOR_GUEST

	select PARAVIRT

	select PARAVIRT_XXL

	depends on X86_64 && PCI

	depends on X86_EXTENDED_PLATFORM

	depends on SMP
@@ -754,6 +755,9 @@ 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

arch/x86/boot/compressed/misc.h

+1 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
 * paravirt and debugging variants are added.)

 */

#undef CONFIG_PARAVIRT

#undef CONFIG_PARAVIRT_XXL

#undef CONFIG_PARAVIRT_SPINLOCKS

#undef CONFIG_KASAN

arch/x86/mm/mem_encrypt_identity.c

+1 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
 * be extended when new paravirt and debugging variants are added.)

 */

#undef CONFIG_PARAVIRT

#undef CONFIG_PARAVIRT_XXL

#undef CONFIG_PARAVIRT_SPINLOCKS



#include <linux/kernel.h>

arch/x86/xen/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

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