Module Name: src
Committed By: bouyer
Date: Mon Dec 2 13:31:33 UTC 2024
Modified Files:
src/sys/arch/amd64/amd64: genassym.cf locore.S machdep.c
src/sys/arch/x86/acpi: acpi_machdep.c
src/sys/arch/x86/include: cpu.h
src/sys/arch/x86/x86: consinit.c identcpu.c x86_autoconf.c
x86_machdep.c
src/sys/arch/xen/xen: hypervisor.c
Log Message:
Add support for non-Xen PVH guests to amd64. Patch from
Emile 'iMil' Heitor in PR kern/57813, with some cosmetic tweaks by me.
Tested on bare metal, Xen PV and Xen PVH by me.
To generate a diff of this commit:
cvs rdiff -u -r1.97 -r1.98 src/sys/arch/amd64/amd64/genassym.cf
cvs rdiff -u -r1.225 -r1.226 src/sys/arch/amd64/amd64/locore.S
cvs rdiff -u -r1.369 -r1.370 src/sys/arch/amd64/amd64/machdep.c
cvs rdiff -u -r1.36 -r1.37 src/sys/arch/x86/acpi/acpi_machdep.c
cvs rdiff -u -r1.136 -r1.137 src/sys/arch/x86/include/cpu.h
cvs rdiff -u -r1.39 -r1.40 src/sys/arch/x86/x86/consinit.c
cvs rdiff -u -r1.130 -r1.131 src/sys/arch/x86/x86/identcpu.c
cvs rdiff -u -r1.87 -r1.88 src/sys/arch/x86/x86/x86_autoconf.c
cvs rdiff -u -r1.154 -r1.155 src/sys/arch/x86/x86/x86_machdep.c
cvs rdiff -u -r1.96 -r1.97 src/sys/arch/xen/xen/hypervisor.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/amd64/amd64/genassym.cf
diff -u src/sys/arch/amd64/amd64/genassym.cf:1.97 src/sys/arch/amd64/amd64/genassym.cf:1.98
--- src/sys/arch/amd64/amd64/genassym.cf:1.97 Wed Oct 4 20:28:05 2023
+++ src/sys/arch/amd64/amd64/genassym.cf Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-# $NetBSD: genassym.cf,v 1.97 2023/10/04 20:28:05 ad Exp $
+# $NetBSD: genassym.cf,v 1.98 2024/12/02 13:31:32 bouyer Exp $
#
# Copyright (c) 1998, 2006, 2007, 2008, 2023 The NetBSD Foundation, Inc.
@@ -373,6 +373,7 @@ define BST_TYPE offsetof(struct bus_spa
define VM_GUEST_XENPV VM_GUEST_XENPV
define VM_GUEST_XENPVH VM_GUEST_XENPVH
+define VM_GUEST_GENPVH VM_GUEST_GENPVH
ifdef XEN
define CPU_INFO_VCPU offsetof(struct cpu_info, ci_vcpu)
@@ -381,6 +382,12 @@ define SIR_XENIPL_VM SIR_XENIPL_VM
define SIR_XENIPL_SCHED SIR_XENIPL_SCHED
define SIR_XENIPL_HIGH SIR_XENIPL_HIGH
define EVTCHN_UPCALL_MASK offsetof(struct vcpu_info, evtchn_upcall_mask)
+define HVM_START_INFO_SIZE sizeof(struct hvm_start_info)
+define START_INFO_VERSION offsetof(struct hvm_start_info, version)
+define MMAP_PADDR offsetof(struct hvm_start_info, memmap_paddr)
+define MMAP_ENTRIES offsetof(struct hvm_start_info, memmap_entries)
+define MMAP_ENTRY_SIZE sizeof(struct hvm_memmap_table_entry)
+define CMDLINE_PADDR offsetof(struct hvm_start_info, cmdline_paddr)
ifdef XENPV
define XEN_PT_BASE offsetof(struct start_info, pt_base)
define XEN_NR_PT_FRAMES offsetof(struct start_info, nr_pt_frames)
Index: src/sys/arch/amd64/amd64/locore.S
diff -u src/sys/arch/amd64/amd64/locore.S:1.225 src/sys/arch/amd64/amd64/locore.S:1.226
--- src/sys/arch/amd64/amd64/locore.S:1.225 Wed Jul 31 20:05:28 2024
+++ src/sys/arch/amd64/amd64/locore.S Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: locore.S,v 1.225 2024/07/31 20:05:28 andvar Exp $ */
+/* $NetBSD: locore.S,v 1.226 2024/12/02 13:31:32 bouyer Exp $ */
/*
* Copyright-o-rama!
@@ -278,6 +278,7 @@
#ifdef XEN
#define __ASSEMBLY__
+#include <xen/include/public/arch-x86/cpuid.h>
#include <xen/include/public/elfnote.h>
#include <xen/include/public/xen.h>
@@ -306,7 +307,7 @@
ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .quad, start)
#else
ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .quad, 0)
- ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, .long, RELOC(start_xen32))
+ ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, .long, RELOC(start_pvh))
#endif /* XENPV */
ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .quad, hypercall_page)
ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW, .quad, HYPERVISOR_VIRT_START)
@@ -1035,7 +1036,7 @@ END(start)
# if !defined(XENPV)
/* entry point for Xen PVH */
.code32
-ENTRY(start_xen32)
+ENTRY(start_pvh)
/* Xen doesn't start us with a valid gdt */
movl $RELOC(gdtdesc32), %eax
lgdt (%eax)
@@ -1059,6 +1060,93 @@ ENTRY(start_xen32)
stosb
/*
+ * Here, we have 2 cases :
+ *
+ * 1) We have been started by Xen
+ * 2) We have been started by another VMM (Qemu, Firecracker, ...)
+ *
+ * The main difference is that, when we are started by Xen,
+ * %ebx (addr of the hvm_start_info structure) is pointing to a
+ * location that will be mapped correctly later.
+ *
+ * In the second case, we have to copy this structure (and all
+ * the information contained in it) to a location that will be
+ * mapped later : __kernel_end
+ *
+ * To distinguish between the 2 cases, we'll use the 'cpuid' instruction
+ */
+
+ push %ebx
+ xorl %eax, %eax
+ cpuid
+ cmpl $0x1, %eax /* Check if we can call CPUID with eax=1 */
+ jb .start_genpvh
+ xorl %eax, %eax
+ inc %eax
+ cpuid
+ shr $31, %ecx
+ testb $1, %cl /* Check if bit 31 of ECX (hypervisor) is set */
+ jz .start_genpvh
+ xorl %eax, %eax
+ inc %eax
+ shl $30, %eax
+ cpuid /* Calling cpuid with eax=0x40000000 */
+ cmp $XEN_CPUID_SIGNATURE_EBX, %ebx /* "VneX" */
+ je .start_xen32
+
+ /* We have been started by a VMM that is *not* Xen */
+
+.start_genpvh:
+
+ /* First, copy the hvm_start_info structure to __kernel_end */
+ pop %ebx
+ movl %ebx, %esi
+ movl $RELOC(__kernel_end), %edi
+ movl $HVM_START_INFO_SIZE, %ecx
+ shrl $2, %ecx
+ rep movsl
+
+ /* Copy cmdline_paddr after hvm_start_info */
+ movl CMDLINE_PADDR(%ebx), %esi
+ movl $RELOC(__kernel_end), %ecx
+ movl %edi, CMDLINE_PADDR(%ecx) /* Set new cmdline_paddr in hvm_start_info */
+ .cmdline_copy:
+ movb (%esi), %al
+ movsb
+ cmp $0, %al
+ jne .cmdline_copy
+
+ /* Copy memmap_paddr after cmdline (only if hvm_start_info->version != 0) */
+ xorl %eax, %eax
+ cmpl START_INFO_VERSION(%ebx), %eax
+ je .reload_ebx
+ movl MMAP_PADDR(%ebx), %esi
+ movl $RELOC(__kernel_end), %ecx
+ movl %edi, MMAP_PADDR(%ecx) /* Set new memmap_paddr in hvm_start_info */
+ movl MMAP_ENTRIES(%ebx), %eax /* Get memmap_entries */
+ movl $MMAP_ENTRY_SIZE, %ebx
+ mull %ebx /* eax * ebx => edx:eax */
+ movl %eax, %ecx
+ shrl $2, %ecx
+ rep movsl
+
+.reload_ebx:
+ movl $RELOC(__kernel_end), %ebx
+
+ /* announce ourself */
+ movl $VM_GUEST_GENPVH, RELOC(vm_guest)
+
+ jmp .save_hvm_start_paddr
+
+.start_xen32:
+ pop %ebx
+ movl $VM_GUEST_XENPVH, RELOC(vm_guest)
+
+.save_hvm_start_paddr:
+ /*
+ * save addr of the hvm_start_info structure. This is also the end
+ * of the symbol table
+ /*
* save addr of the hvm_start_info structure. This is also the end
* of the symbol table
*/
@@ -1069,6 +1157,9 @@ ENTRY(start_xen32)
movl %eax,(%ebp)
movl $KERNBASE_HI,4(%ebp)
/* get a page for HYPERVISOR_shared_info */
+ /* this is only needed if we are running on Xen */
+ cmpl $VM_GUEST_XENPVH, RELOC(vm_guest)
+ jne .add_hvm_start_info_page
addl $PAGE_SIZE, %ebx
addl $PGOFSET,%ebx
andl $~PGOFSET,%ebx
@@ -1076,6 +1167,7 @@ ENTRY(start_xen32)
movl %ebx,(%ebp)
movl $0,4(%ebp)
/* XXX assume hvm_start_info+dependant structure fits in a single page */
+.add_hvm_start_info_page:
addl $PAGE_SIZE, %ebx
addl $PGOFSET,%ebx
andl $~PGOFSET,%ebx
@@ -1084,10 +1176,8 @@ ENTRY(start_xen32)
movl %ebx,(%ebp)
movl $KERNBASE_HI,4(%ebp)
- /* announce ourself */
- movl $VM_GUEST_XENPVH, RELOC(vm_guest)
jmp .Lbiosbasemem_finished
-END(start_xen32)
+END(start_pvh)
.code64
# endif /* !XENPV */
/* space for the hypercall call page */
Index: src/sys/arch/amd64/amd64/machdep.c
diff -u src/sys/arch/amd64/amd64/machdep.c:1.369 src/sys/arch/amd64/amd64/machdep.c:1.370
--- src/sys/arch/amd64/amd64/machdep.c:1.369 Thu Jun 27 23:58:46 2024
+++ src/sys/arch/amd64/amd64/machdep.c Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: machdep.c,v 1.369 2024/06/27 23:58:46 riastradh Exp $ */
+/* $NetBSD: machdep.c,v 1.370 2024/12/02 13:31:32 bouyer Exp $ */
/*
* Copyright (c) 1996, 1997, 1998, 2000, 2006, 2007, 2008, 2011
@@ -110,7 +110,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.369 2024/06/27 23:58:46 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.370 2024/12/02 13:31:32 bouyer Exp $");
#include "opt_modular.h"
#include "opt_user_ldt.h"
@@ -1516,8 +1516,10 @@ init_x86_64_ksyms(void)
} else {
uintptr_t endp = (uintptr_t)(void *)&end;
- ksyms_addsyms_elf(*(long *)endp,
- ((long *)endp) + 1, esym);
+ if (vm_guest == VM_GUEST_GENPVH)
+ ksyms_addsyms_elf(0, ((long *)endp) + 1, esym);
+ else
+ ksyms_addsyms_elf(*(long *)endp, ((long *)endp) + 1, esym);
}
#endif
}
@@ -1701,7 +1703,7 @@ init_x86_64(paddr_t first_avail)
#endif
#ifdef XEN
- if (vm_guest == VM_GUEST_XENPVH)
+ if (vm_guest == VM_GUEST_XENPVH || vm_guest == VM_GUEST_GENPVH)
xen_parse_cmdline(XEN_PARSE_BOOTFLAGS, NULL);
#endif
init_pte();
Index: src/sys/arch/x86/acpi/acpi_machdep.c
diff -u src/sys/arch/x86/acpi/acpi_machdep.c:1.36 src/sys/arch/x86/acpi/acpi_machdep.c:1.37
--- src/sys/arch/x86/acpi/acpi_machdep.c:1.36 Mon Oct 16 17:27:02 2023
+++ src/sys/arch/x86/acpi/acpi_machdep.c Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_machdep.c,v 1.36 2023/10/16 17:27:02 bouyer Exp $ */
+/* $NetBSD: acpi_machdep.c,v 1.37 2024/12/02 13:31:32 bouyer Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@@ -40,7 +40,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.36 2023/10/16 17:27:02 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.37 2024/12/02 13:31:32 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -158,7 +158,7 @@ out:
}
#else
#ifdef XEN
- if (vm_guest == VM_GUEST_XENPVH) {
+ if (vm_guest == VM_GUEST_XENPVH || vm_guest == VM_GUEST_GENPVH) {
PhysicalAddress = hvm_start_info->rsdp_paddr;
if (PhysicalAddress)
return PhysicalAddress;
Index: src/sys/arch/x86/include/cpu.h
diff -u src/sys/arch/x86/include/cpu.h:1.136 src/sys/arch/x86/include/cpu.h:1.137
--- src/sys/arch/x86/include/cpu.h:1.136 Tue Aug 1 19:36:57 2023
+++ src/sys/arch/x86/include/cpu.h Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.h,v 1.136 2023/08/01 19:36:57 riastradh Exp $ */
+/* $NetBSD: cpu.h,v 1.137 2024/12/02 13:31:32 bouyer Exp $ */
/*
* Copyright (c) 1990 The Regents of the University of California.
@@ -516,6 +516,7 @@ typedef enum vm_guest {
VM_GUEST_VMWARE,
VM_GUEST_KVM,
VM_GUEST_VIRTUALBOX,
+ VM_GUEST_GENPVH,
VM_LAST
} vm_guest_t;
extern vm_guest_t vm_guest;
Index: src/sys/arch/x86/x86/consinit.c
diff -u src/sys/arch/x86/x86/consinit.c:1.39 src/sys/arch/x86/x86/consinit.c:1.40
--- src/sys/arch/x86/x86/consinit.c:1.39 Fri Feb 9 22:08:33 2024
+++ src/sys/arch/x86/x86/consinit.c Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: consinit.c,v 1.39 2024/02/09 22:08:33 andvar Exp $ */
+/* $NetBSD: consinit.c,v 1.40 2024/12/02 13:31:32 bouyer Exp $ */
/*
* Copyright (c) 1998
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.39 2024/02/09 22:08:33 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.40 2024/12/02 13:31:32 bouyer Exp $");
#include "opt_kgdb.h"
#include "opt_puc.h"
@@ -171,6 +171,7 @@ consinit(void)
#if (NCOM > 0)
int rv;
#endif
+ char console_devname[16] = "";
#ifdef XENPVHVM
if (vm_guest == VM_GUEST_XENPVH) {
@@ -178,6 +179,13 @@ consinit(void)
return;
/* fallback to native console selection, useful for dom0 PVH */
}
+ if (vm_guest == VM_GUEST_GENPVH) {
+ union xen_cmdline_parseinfo xcp;
+ /* get console= parameter from generic PVH VMM */
+ xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp);
+ strncpy(console_devname, xcp.xcp_console,
+ sizeof(console_devname));
+ }
#endif
if (initted)
return;
@@ -188,7 +196,10 @@ consinit(void)
if (!consinfo)
#endif
consinfo = &default_consinfo;
-
+ /* console= parameter was not passed via a generic PVH VMM */
+ if (!console_devname[0])
+ strncpy(console_devname, consinfo->devname,
+ sizeof(console_devname));
#if (NGENFB > 0)
#if defined(XENPVHVM) && defined(DOM0OPS)
if (vm_guest == VM_GUEST_XENPVH && xendomain_is_dom0())
@@ -197,8 +208,7 @@ consinit(void)
#endif /* XENPVHVM */
fbinfo = lookup_bootinfo(BTINFO_FRAMEBUFFER);
#endif
-
- if (!strcmp(consinfo->devname, "pc")) {
+ if (!strcmp(console_devname, "pc")) {
int error;
#if (NGENFB > 0)
if (fbinfo && fbinfo->physaddr > 0) {
@@ -254,7 +264,7 @@ dokbd:
return;
}
#if (NCOM > 0)
- if (!strcmp(consinfo->devname, "com")) {
+ if (!strcmp(console_devname, "com")) {
int addr = consinfo->addr;
int speed = consinfo->speed;
@@ -278,14 +288,14 @@ dokbd:
}
#endif
#if (NNULLCONS > 0)
- if (!strcmp(consinfo->devname, "nullcons")) {
+ if (!strcmp(console_devname, "nullcons")) {
void nullcninit(struct consdev *cn);
nullcninit(0);
return;
}
#endif
- panic("invalid console device %s", consinfo->devname);
+ panic("invalid console device %s", console_devname);
}
#ifdef KGDB
Index: src/sys/arch/x86/x86/identcpu.c
diff -u src/sys/arch/x86/x86/identcpu.c:1.130 src/sys/arch/x86/x86/identcpu.c:1.131
--- src/sys/arch/x86/x86/identcpu.c:1.130 Mon Jul 1 19:40:03 2024
+++ src/sys/arch/x86/x86/identcpu.c Mon Dec 2 13:31:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: identcpu.c,v 1.130 2024/07/01 19:40:03 andvar Exp $ */
+/* $NetBSD: identcpu.c,v 1.131 2024/12/02 13:31:32 bouyer Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.130 2024/07/01 19:40:03 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.131 2024/12/02 13:31:32 bouyer Exp $");
#include "opt_xen.h"
@@ -1072,6 +1072,7 @@ static const struct vm_name_guest vm_bio
{ "BHYVE", VM_GUEST_VM }, /* bhyve */
{ "Seabios", VM_GUEST_VM }, /* KVM */
{ "innotek GmbH", VM_GUEST_VIRTUALBOX }, /* Oracle VirtualBox */
+ { "Generic PVH", VM_GUEST_GENPVH}, /* Generic PVH */
};
static const struct vm_name_guest vm_system_products[] = {
@@ -1093,6 +1094,7 @@ identify_hypervisor(void)
switch (vm_guest) {
case VM_GUEST_XENPV:
case VM_GUEST_XENPVH:
+ case VM_GUEST_GENPVH:
/* guest type already known, no bios info */
return;
default:
Index: src/sys/arch/x86/x86/x86_autoconf.c
diff -u src/sys/arch/x86/x86/x86_autoconf.c:1.87 src/sys/arch/x86/x86/x86_autoconf.c:1.88
--- src/sys/arch/x86/x86/x86_autoconf.c:1.87 Sat Mar 19 13:51:35 2022
+++ src/sys/arch/x86/x86/x86_autoconf.c Mon Dec 2 13:31:33 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: x86_autoconf.c,v 1.87 2022/03/19 13:51:35 hannken Exp $ */
+/* $NetBSD: x86_autoconf.c,v 1.88 2024/12/02 13:31:33 bouyer Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: x86_autoconf.c,v 1.87 2022/03/19 13:51:35 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: x86_autoconf.c,v 1.88 2024/12/02 13:31:33 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -540,7 +540,7 @@ void
cpu_bootconf(void)
{
#ifdef XEN
- if (vm_guest == VM_GUEST_XENPVH) {
+ if (vm_guest == VM_GUEST_XENPVH || vm_guest == VM_GUEST_GENPVH) {
xen_bootconf();
return;
}
Index: src/sys/arch/x86/x86/x86_machdep.c
diff -u src/sys/arch/x86/x86/x86_machdep.c:1.154 src/sys/arch/x86/x86/x86_machdep.c:1.155
--- src/sys/arch/x86/x86/x86_machdep.c:1.154 Wed Oct 4 20:28:06 2023
+++ src/sys/arch/x86/x86/x86_machdep.c Mon Dec 2 13:31:33 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: x86_machdep.c,v 1.154 2023/10/04 20:28:06 ad Exp $ */
+/* $NetBSD: x86_machdep.c,v 1.155 2024/12/02 13:31:33 bouyer Exp $ */
/*-
* Copyright (c) 2002, 2006, 2007 YAMAMOTO Takashi,
@@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.154 2023/10/04 20:28:06 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.155 2024/12/02 13:31:33 bouyer Exp $");
#include "opt_modular.h"
#include "opt_physmem.h"
@@ -911,7 +911,7 @@ init_x86_clusters(void)
* the boot program).
*/
#ifdef XEN
- if (vm_guest == VM_GUEST_XENPVH) {
+ if (vm_guest == VM_GUEST_XENPVH || vm_guest == VM_GUEST_GENPVH) {
x86_add_xen_clusters();
}
#endif /* XEN */
Index: src/sys/arch/xen/xen/hypervisor.c
diff -u src/sys/arch/xen/xen/hypervisor.c:1.96 src/sys/arch/xen/xen/hypervisor.c:1.97
--- src/sys/arch/xen/xen/hypervisor.c:1.96 Thu Jun 23 14:32:16 2022
+++ src/sys/arch/xen/xen/hypervisor.c Mon Dec 2 13:31:33 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: hypervisor.c,v 1.96 2022/06/23 14:32:16 bouyer Exp $ */
+/* $NetBSD: hypervisor.c,v 1.97 2024/12/02 13:31:33 bouyer Exp $ */
/*
* Copyright (c) 2005 Manuel Bouyer.
@@ -53,7 +53,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: hypervisor.c,v 1.96 2022/06/23 14:32:16 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: hypervisor.c,v 1.97 2024/12/02 13:31:33 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -241,10 +241,25 @@ void
init_xen_early(void)
{
const char *cmd_line;
+ if (vm_guest != VM_GUEST_XENPVH && vm_guest != VM_GUEST_GENPVH)
+ return;
+
+ hvm_start_info = (void *)((uintptr_t)hvm_start_paddr + KERNBASE);
+
+ if (hvm_start_info->cmdline_paddr != 0) {
+ cmd_line =
+ (void *)((uintptr_t)hvm_start_info->cmdline_paddr + KERNBASE);
+ strlcpy(xen_start_info.cmd_line, cmd_line,
+ sizeof(xen_start_info.cmd_line));
+ } else {
+ xen_start_info.cmd_line[0] = '\0';
+ }
+ xen_start_info.flags = hvm_start_info->flags;
+
if (vm_guest != VM_GUEST_XENPVH)
return;
+
xen_init_hypercall_page();
- hvm_start_info = (void *)((uintptr_t)hvm_start_paddr + KERNBASE);
HYPERVISOR_shared_info = (void *)((uintptr_t)HYPERVISOR_shared_info_pa + KERNBASE);
struct xen_add_to_physmap xmap = {
@@ -262,15 +277,6 @@ init_xen_early(void)
}
delay_func = x86_delay = xen_delay;
x86_initclock_func = xen_initclocks;
- if (hvm_start_info->cmdline_paddr != 0) {
- cmd_line =
- (void *)((uintptr_t)hvm_start_info->cmdline_paddr + KERNBASE);
- strlcpy(xen_start_info.cmd_line, cmd_line,
- sizeof(xen_start_info.cmd_line));
- } else {
- xen_start_info.cmd_line[0] = '\0';
- }
- xen_start_info.flags = hvm_start_info->flags;
}
