diff options
Diffstat (limited to 'arch/x86/xen/enlighten_pvh.c')
-rw-r--r-- | arch/x86/xen/enlighten_pvh.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index 6be7bc719b38..41a7d6ad74e0 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -1,5 +1,12 @@ // SPDX-License-Identifier: GPL-2.0 -#include <linux/types.h> +#include <linux/acpi.h> + +#include <asm/io_apic.h> +#include <asm/hypervisor.h> + +#include <xen/xen.h> +#include <asm/xen/interface.h> +#include <asm/xen/hypercall.h> /* * PVH variables. @@ -8,3 +15,16 @@ * after startup_{32|64} is invoked, which will clear the .bss segment. */ bool xen_pvh __attribute__((section(".data"))) = 0; + +void __init xen_pvh_init(void) +{ + u32 msr; + u64 pfn; + + xen_pvh = 1; + xen_start_flags = pvh_start_info.flags; + + msr = cpuid_ebx(xen_cpuid_base() + 2); + pfn = __pa(hypercall_page); + wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); +} |