mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 18:39:59 +00:00
x86/xen: split off enlighten_pvh.c
Create enlighten_pvh.c by splitting off PVH related code from enlighten.c, put it under CONFIG_XEN_PVH. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
parent
5e57f1d607
commit
481d66325d
3 changed files with 116 additions and 108 deletions
|
@ -15,6 +15,8 @@ obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
|
||||||
grant-table.o suspend.o platform-pci-unplug.o \
|
grant-table.o suspend.o platform-pci-unplug.o \
|
||||||
p2m.o apic.o pmu.o
|
p2m.o apic.o pmu.o
|
||||||
|
|
||||||
|
obj-$(CONFIG_XEN_PVH) += enlighten_pvh.o
|
||||||
|
|
||||||
obj-$(CONFIG_EVENT_TRACING) += trace.o
|
obj-$(CONFIG_EVENT_TRACING) += trace.o
|
||||||
|
|
||||||
obj-$(CONFIG_SMP) += smp.o
|
obj-$(CONFIG_SMP) += smp.o
|
||||||
|
|
|
@ -180,20 +180,6 @@ struct tls_descs {
|
||||||
*/
|
*/
|
||||||
static DEFINE_PER_CPU(struct tls_descs, shadow_tls_desc);
|
static DEFINE_PER_CPU(struct tls_descs, shadow_tls_desc);
|
||||||
|
|
||||||
#ifdef CONFIG_XEN_PVH
|
|
||||||
/*
|
|
||||||
* PVH variables.
|
|
||||||
*
|
|
||||||
* xen_pvh and pvh_bootparams need to live in data segment since they
|
|
||||||
* are used after startup_{32|64}, which clear .bss, are invoked.
|
|
||||||
*/
|
|
||||||
bool xen_pvh __attribute__((section(".data"))) = 0;
|
|
||||||
struct boot_params pvh_bootparams __attribute__((section(".data")));
|
|
||||||
|
|
||||||
struct hvm_start_info pvh_start_info;
|
|
||||||
unsigned int pvh_start_info_sz = sizeof(pvh_start_info);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
static void clamp_max_cpus(void)
|
static void clamp_max_cpus(void)
|
||||||
{
|
{
|
||||||
#ifdef CONFIG_SMP
|
#ifdef CONFIG_SMP
|
||||||
|
@ -1674,100 +1660,6 @@ asmlinkage __visible void __init xen_start_kernel(void)
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
#ifdef CONFIG_XEN_PVH
|
|
||||||
|
|
||||||
static void xen_pvh_arch_setup(void)
|
|
||||||
{
|
|
||||||
#ifdef CONFIG_ACPI
|
|
||||||
/* Make sure we don't fall back to (default) ACPI_IRQ_MODEL_PIC. */
|
|
||||||
if (nr_ioapics == 0)
|
|
||||||
acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
static void __init init_pvh_bootparams(void)
|
|
||||||
{
|
|
||||||
struct xen_memory_map memmap;
|
|
||||||
unsigned int i;
|
|
||||||
int rc;
|
|
||||||
|
|
||||||
memset(&pvh_bootparams, 0, sizeof(pvh_bootparams));
|
|
||||||
|
|
||||||
memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_table);
|
|
||||||
set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_table);
|
|
||||||
rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap);
|
|
||||||
if (rc) {
|
|
||||||
xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc);
|
|
||||||
BUG();
|
|
||||||
}
|
|
||||||
|
|
||||||
if (memmap.nr_entries < E820_MAX_ENTRIES_ZEROPAGE - 1) {
|
|
||||||
pvh_bootparams.e820_table[memmap.nr_entries].addr =
|
|
||||||
ISA_START_ADDRESS;
|
|
||||||
pvh_bootparams.e820_table[memmap.nr_entries].size =
|
|
||||||
ISA_END_ADDRESS - ISA_START_ADDRESS;
|
|
||||||
pvh_bootparams.e820_table[memmap.nr_entries].type =
|
|
||||||
E820_TYPE_RESERVED;
|
|
||||||
memmap.nr_entries++;
|
|
||||||
} else
|
|
||||||
xen_raw_printk("Warning: Can fit ISA range into e820\n");
|
|
||||||
|
|
||||||
pvh_bootparams.e820_entries = memmap.nr_entries;
|
|
||||||
for (i = 0; i < pvh_bootparams.e820_entries; i++)
|
|
||||||
e820__range_add(pvh_bootparams.e820_table[i].addr,
|
|
||||||
pvh_bootparams.e820_table[i].size,
|
|
||||||
pvh_bootparams.e820_table[i].type);
|
|
||||||
|
|
||||||
e820__update_table(e820_table);
|
|
||||||
|
|
||||||
pvh_bootparams.hdr.cmd_line_ptr =
|
|
||||||
pvh_start_info.cmdline_paddr;
|
|
||||||
|
|
||||||
/* The first module is always ramdisk. */
|
|
||||||
if (pvh_start_info.nr_modules) {
|
|
||||||
struct hvm_modlist_entry *modaddr =
|
|
||||||
__va(pvh_start_info.modlist_paddr);
|
|
||||||
pvh_bootparams.hdr.ramdisk_image = modaddr->paddr;
|
|
||||||
pvh_bootparams.hdr.ramdisk_size = modaddr->size;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* See Documentation/x86/boot.txt.
|
|
||||||
*
|
|
||||||
* Version 2.12 supports Xen entry point but we will use default x86/PC
|
|
||||||
* environment (i.e. hardware_subarch 0).
|
|
||||||
*/
|
|
||||||
pvh_bootparams.hdr.version = 0x212;
|
|
||||||
pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* This routine (and those that it might call) should not use
|
|
||||||
* anything that lives in .bss since that segment will be cleared later.
|
|
||||||
*/
|
|
||||||
void __init xen_prepare_pvh(void)
|
|
||||||
{
|
|
||||||
u32 msr;
|
|
||||||
u64 pfn;
|
|
||||||
|
|
||||||
if (pvh_start_info.magic != XEN_HVM_START_MAGIC_VALUE) {
|
|
||||||
xen_raw_printk("Error: Unexpected magic value (0x%08x)\n",
|
|
||||||
pvh_start_info.magic);
|
|
||||||
BUG();
|
|
||||||
}
|
|
||||||
|
|
||||||
xen_pvh = 1;
|
|
||||||
|
|
||||||
msr = cpuid_ebx(xen_cpuid_base() + 2);
|
|
||||||
pfn = __pa(hypercall_page);
|
|
||||||
wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32));
|
|
||||||
|
|
||||||
init_pvh_bootparams();
|
|
||||||
|
|
||||||
x86_init.oem.arch_setup = xen_pvh_arch_setup;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
void __ref xen_hvm_init_shared_info(void)
|
void __ref xen_hvm_init_shared_info(void)
|
||||||
{
|
{
|
||||||
int cpu;
|
int cpu;
|
||||||
|
|
114
arch/x86/xen/enlighten_pvh.c
Normal file
114
arch/x86/xen/enlighten_pvh.c
Normal file
|
@ -0,0 +1,114 @@
|
||||||
|
#include <linux/acpi.h>
|
||||||
|
|
||||||
|
#include <xen/hvc-console.h>
|
||||||
|
|
||||||
|
#include <asm/io_apic.h>
|
||||||
|
#include <asm/hypervisor.h>
|
||||||
|
#include <asm/e820/api.h>
|
||||||
|
|
||||||
|
#include <asm/xen/interface.h>
|
||||||
|
#include <asm/xen/hypercall.h>
|
||||||
|
|
||||||
|
#include <xen/interface/memory.h>
|
||||||
|
#include <xen/interface/hvm/start_info.h>
|
||||||
|
|
||||||
|
/*
|
||||||
|
* PVH variables.
|
||||||
|
*
|
||||||
|
* xen_pvh and pvh_bootparams need to live in data segment since they
|
||||||
|
* are used after startup_{32|64}, which clear .bss, are invoked.
|
||||||
|
*/
|
||||||
|
bool xen_pvh __attribute__((section(".data"))) = 0;
|
||||||
|
struct boot_params pvh_bootparams __attribute__((section(".data")));
|
||||||
|
|
||||||
|
struct hvm_start_info pvh_start_info;
|
||||||
|
unsigned int pvh_start_info_sz = sizeof(pvh_start_info);
|
||||||
|
|
||||||
|
static void xen_pvh_arch_setup(void)
|
||||||
|
{
|
||||||
|
/* Make sure we don't fall back to (default) ACPI_IRQ_MODEL_PIC. */
|
||||||
|
if (nr_ioapics == 0)
|
||||||
|
acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void __init init_pvh_bootparams(void)
|
||||||
|
{
|
||||||
|
struct xen_memory_map memmap;
|
||||||
|
unsigned int i;
|
||||||
|
int rc;
|
||||||
|
|
||||||
|
memset(&pvh_bootparams, 0, sizeof(pvh_bootparams));
|
||||||
|
|
||||||
|
memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_table);
|
||||||
|
set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_table);
|
||||||
|
rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap);
|
||||||
|
if (rc) {
|
||||||
|
xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc);
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (memmap.nr_entries < E820_MAX_ENTRIES_ZEROPAGE - 1) {
|
||||||
|
pvh_bootparams.e820_table[memmap.nr_entries].addr =
|
||||||
|
ISA_START_ADDRESS;
|
||||||
|
pvh_bootparams.e820_table[memmap.nr_entries].size =
|
||||||
|
ISA_END_ADDRESS - ISA_START_ADDRESS;
|
||||||
|
pvh_bootparams.e820_table[memmap.nr_entries].type =
|
||||||
|
E820_TYPE_RESERVED;
|
||||||
|
memmap.nr_entries++;
|
||||||
|
} else
|
||||||
|
xen_raw_printk("Warning: Can fit ISA range into e820\n");
|
||||||
|
|
||||||
|
pvh_bootparams.e820_entries = memmap.nr_entries;
|
||||||
|
for (i = 0; i < pvh_bootparams.e820_entries; i++)
|
||||||
|
e820__range_add(pvh_bootparams.e820_table[i].addr,
|
||||||
|
pvh_bootparams.e820_table[i].size,
|
||||||
|
pvh_bootparams.e820_table[i].type);
|
||||||
|
|
||||||
|
e820__update_table(e820_table);
|
||||||
|
|
||||||
|
pvh_bootparams.hdr.cmd_line_ptr =
|
||||||
|
pvh_start_info.cmdline_paddr;
|
||||||
|
|
||||||
|
/* The first module is always ramdisk. */
|
||||||
|
if (pvh_start_info.nr_modules) {
|
||||||
|
struct hvm_modlist_entry *modaddr =
|
||||||
|
__va(pvh_start_info.modlist_paddr);
|
||||||
|
pvh_bootparams.hdr.ramdisk_image = modaddr->paddr;
|
||||||
|
pvh_bootparams.hdr.ramdisk_size = modaddr->size;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* See Documentation/x86/boot.txt.
|
||||||
|
*
|
||||||
|
* Version 2.12 supports Xen entry point but we will use default x86/PC
|
||||||
|
* environment (i.e. hardware_subarch 0).
|
||||||
|
*/
|
||||||
|
pvh_bootparams.hdr.version = 0x212;
|
||||||
|
pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This routine (and those that it might call) should not use
|
||||||
|
* anything that lives in .bss since that segment will be cleared later.
|
||||||
|
*/
|
||||||
|
void __init xen_prepare_pvh(void)
|
||||||
|
{
|
||||||
|
u32 msr;
|
||||||
|
u64 pfn;
|
||||||
|
|
||||||
|
if (pvh_start_info.magic != XEN_HVM_START_MAGIC_VALUE) {
|
||||||
|
xen_raw_printk("Error: Unexpected magic value (0x%08x)\n",
|
||||||
|
pvh_start_info.magic);
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
|
||||||
|
xen_pvh = 1;
|
||||||
|
|
||||||
|
msr = cpuid_ebx(xen_cpuid_base() + 2);
|
||||||
|
pfn = __pa(hypercall_page);
|
||||||
|
wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32));
|
||||||
|
|
||||||
|
init_pvh_bootparams();
|
||||||
|
|
||||||
|
x86_init.oem.arch_setup = xen_pvh_arch_setup;
|
||||||
|
}
|
Loading…
Reference in a new issue