// SPDX-License-Identifier: GPL-2.0 #include <linux/acpi.h> #include <xen/hvc-console.h> #include <asm/io_apic.h> #include <asm/hypervisor.h> #include <asm/e820/api.h> #include <xen/xen.h> #include <asm/xen/interface.h> #include <asm/xen/hypercall.h> #include <xen/interface/memory.h> /* * PVH variables. * * The variable xen_pvh needs to live in the data segment since it is used * 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)); } void __init mem_map_via_hcall(struct boot_params *boot_params_p) { struct xen_memory_map memmap; int rc; memmap.nr_entries = ARRAY_SIZE(boot_params_p->e820_table); set_xen_guest_handle(memmap.buffer, boot_params_p->e820_table); rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); if (rc) { xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc); BUG(); } boot_params_p->e820_entries = memmap.nr_entries; }