From 7733607fb3aa72e3df47e6165156feb92ced8f5f Mon Sep 17 00:00:00 2001 From: Maran Wilson <maran.wilson@oracle.com> Date: Mon, 10 Dec 2018 11:07:28 -0800 Subject: [PATCH] xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and CONFIG_XEN_PVH In order to pave the way for hypervisors other than Xen to use the PVH entry point for VMs, we need to factor the PVH entry code into Xen specific and hypervisor agnostic components. The first step in doing that, is to create a new config option for PVH entry that can be enabled independently from CONFIG_XEN. Signed-off-by: Maran Wilson <maran.wilson@oracle.com> Reviewed-by: Juergen Gross <jgross@suse.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> --- arch/x86/Kconfig | 6 ++++++ arch/x86/kernel/head_64.S | 2 +- arch/x86/xen/Kconfig | 3 ++- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8689e794a43c8..c2a22a74abee8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -796,6 +796,12 @@ config KVM_GUEST underlying device model, the host provides the guest with timing infrastructure such as time of day, and system time +config PVH + bool "Support for running PVH guests" + ---help--- + This option enables the PVH entry point for guest virtual machines + as specified in the x86/HVM direct boot ABI. + config KVM_DEBUG_FS bool "Enable debug information for KVM Guests in debugfs" depends on KVM_GUEST && DEBUG_FS diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 747c758f67b7b..d1dbe8e4eb824 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -386,7 +386,7 @@ NEXT_PAGE(early_dynamic_pgts) .data -#if defined(CONFIG_XEN_PV) || defined(CONFIG_XEN_PVH) +#if defined(CONFIG_XEN_PV) || defined(CONFIG_PVH) NEXT_PGD_PAGE(init_top_pgt) .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE_NOENC .org init_top_pgt + L4_PAGE_OFFSET*8, 0 diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig index 1ef391aa184d2..e07abefd3d267 100644 --- a/arch/x86/xen/Kconfig +++ b/arch/x86/xen/Kconfig @@ -74,6 +74,7 @@ config XEN_DEBUG_FS Enabling this option may incur a significant performance overhead. config XEN_PVH - bool "Support for running as a PVH guest" + bool "Support for running as a Xen PVH guest" depends on XEN && XEN_PVHVM && ACPI + select PVH def_bool n -- GitLab