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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-ia64-devel] [PATCH 17/28] ia64/xen: domU initialization code.
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
arch/ia64/Makefile | 12 ++++-
arch/ia64/kernel/setup.c | 121 ++++++++++++++++++++++++++++++++++++++++++++
arch/ia64/kernel/smpboot.c | 4 ++
arch/ia64/xen/Makefile | 4 ++
4 files changed, 139 insertions(+), 2 deletions(-)
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index b916ccf..36be3bf 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -45,6 +45,12 @@ ifeq ($(call cc-version),0304)
endif
KBUILD_CFLAGS += $(cflags-y)
+
+cppflags-$(CONFIG_XEN) += \
+ -D__XEN_INTERFACE_VERSION__=$(CONFIG_XEN_INTERFACE_VERSION)
+
+KBUILD_CPPFLAGS += $(cppflags-y)
+
head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o
libs-y += arch/ia64/lib/
@@ -54,7 +60,9 @@ core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
+core-$(CONFIG_IA64_XEN) += arch/ia64/dig/
core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/
+core-$(CONFIG_XEN) += arch/ia64/xen/
drivers-$(CONFIG_PCI) += arch/ia64/pci/
drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/
@@ -87,8 +95,8 @@ CLEAN_FILES += vmlinux.gz bootloader
boot: lib/lib.a vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
-install: vmlinux.gz
- sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) $< System.map
"$(INSTALL_PATH)"
+install:
+ -yes | sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) vmlinux.gz
System.map "$(INSTALL_PATH)"
define archhelp
echo '* compressed - Build compressed kernel image'
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index ebd1a09..0c103b5 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -61,6 +61,12 @@
#include <asm/system.h>
#include <asm/unistd.h>
#include <asm/hpsim.h>
+#ifdef CONFIG_XEN
+#include <xen/features.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/xencomm.h>
+#endif
+#include <linux/dma-mapping.h>
#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
# error "struct cpuinfo_ia64 too big!"
@@ -71,6 +77,34 @@ unsigned long __per_cpu_offset[NR_CPUS];
EXPORT_SYMBOL(__per_cpu_offset);
#endif
+#ifdef CONFIG_XEN
+static void
+xen_panic_hypercall(struct unw_frame_info *info, void *arg)
+{
+ current->thread.ksp = (__u64)info->sw - 16;
+ HYPERVISOR_shutdown(SHUTDOWN_crash);
+ /* we're never actually going to get here... */
+}
+
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ unw_init_running(xen_panic_hypercall, NULL);
+ /* we're never actually going to get here... */
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block xen_panic_block = {
+ xen_panic_event, NULL, 0 /* try to go last */
+};
+
+void xen_pm_power_off(void)
+{
+ local_irq_disable();
+ HYPERVISOR_shutdown(SHUTDOWN_poweroff);
+}
+#endif
+
DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info);
DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
unsigned long ia64_cycles_per_usec;
@@ -288,6 +322,14 @@ reserve_memory (void)
rsvd_region[n].end = (unsigned long) ia64_imva(_end);
n++;
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ rsvd_region[n].start = (unsigned
long)__va((HYPERVISOR_shared_info->arch.start_info_pfn << PAGE_SHIFT));
+ rsvd_region[n].end = rsvd_region[n].start + PAGE_SIZE;
+ n++;
+ }
+#endif
+
#ifdef CONFIG_BLK_DEV_INITRD
if (ia64_boot_param->initrd_start) {
rsvd_region[n].start = (unsigned
long)__va(ia64_boot_param->initrd_start);
@@ -466,6 +508,24 @@ setup_arch (char **cmdline_p)
{
unw_init();
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ struct shared_info *s = HYPERVISOR_shared_info;
+ xen_start_info = __va(s->arch.start_info_pfn << PAGE_SHIFT);
+
+ /* Must be done before any hypercall. */
+ xencomm_initialize();
+
+ xen_setup_features();
+ /* Register a call for panic conditions. */
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &xen_panic_block);
+ pm_power_off = xen_pm_power_off;
+
+ xen_ia64_enable_opt_feature();
+ }
+#endif
+
ia64_patch_vtop((u64) __start___vtop_patchlist, (u64)
__end___vtop_patchlist);
*cmdline_p = __va(ia64_boot_param->command_line);
@@ -518,6 +578,59 @@ setup_arch (char **cmdline_p)
acpi_boot_init();
#endif
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ printk(KERN_INFO
+ "Running on Xen! start_info_pfn=0x%lx nr_pages=%ld "
+ "flags=0x%x\n",
+ HYPERVISOR_shared_info->arch.start_info_pfn,
+ xen_start_info->nr_pages, xen_start_info->flags);
+
+ /*
+ * If a console= is NOT specified, we assume using the
+ * xencons console is desired. By default, this is xvc0
+ * for both dom0 and domU.
+ */
+ if (!strstr(*cmdline_p, "console=")) {
+ char *p, *q, name[5] = "xvc";
+ int offset = 0;
+
+#if defined(CONFIG_VGA_CONSOLE)
+ /*
+ * conswitchp might be set intelligently from the
+ * PCDP code. If set to VGA console, use it.
+ */
+ if (is_initial_xendomain() && conswitchp == &vga_con)
+ strncpy(name, "tty", 3);
+#endif
+
+ p = strstr(*cmdline_p, "xencons=");
+
+ if (p) {
+ p += 8;
+ if (!strncmp(p, "ttyS", 4)) {
+ strncpy(name, p, 4);
+ p += 4;
+ offset = simple_strtol(p, &q, 10);
+ if (p == q)
+ offset = 0;
+ } else if (!strncmp(p, "tty", 3) ||
+ !strncmp(p, "xvc", 3)) {
+ strncpy(name, p, 3);
+ p += 3;
+ offset = simple_strtol(p, &q, 10);
+ if (p == q)
+ offset = 0;
+ } else if (!strncmp(p, "off", 3))
+ offset = -1;
+ }
+
+ if (offset >= 0)
+ add_preferred_console(name, offset, NULL);
+ }
+ }
+#endif
+
#ifdef CONFIG_VT
if (!conswitchp) {
# if defined(CONFIG_DUMMY_CONSOLE)
@@ -537,6 +650,14 @@ setup_arch (char **cmdline_p)
#endif
/* enable IA-64 Machine Check Abort Handling unless disabled */
+#ifdef CONFIG_XEN
+ if (is_running_on_xen() && !is_initial_xendomain()) {
+ nomca = 1;
+#if !defined(CONFIG_VT) || !defined(CONFIG_DUMMY_CONSOLE)
+ conswitchp = NULL;
+#endif
+ }
+#endif
if (!nomca)
ia64_mca_init();
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 32ee597..2da0a00 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -642,6 +642,10 @@ void __devinit smp_prepare_boot_cpu(void)
cpu_set(smp_processor_id(), cpu_online_map);
cpu_set(smp_processor_id(), cpu_callin_map);
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
+#ifdef CONFIG_XEN
+ if (is_running_on_xen())
+ xen_setup_vcpu_info_placement();
+#endif
}
#ifdef CONFIG_HOTPLUG_CPU
diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile
index c219358..91ffafe 100644
--- a/arch/ia64/xen/Makefile
+++ b/arch/ia64/xen/Makefile
@@ -2,6 +2,10 @@
# Makefile for Xen components
#
+obj-y := hypercall.o xenivt.o xenentry.o xensetup.o xenpal.o \
+ hypervisor.o util.o xencomm.o xcom_hcall.o xcom_asm.o
+
+obj-$(CONFIG_IA64_GENERIC) += machvec.o
obj-$(CONFIG_PARAVIRT_ALT) += paravirt_xen.o privops_asm.o privops_c.o
obj-$(CONFIG_PARAVIRT_NOP_B_PATCH) += paravirt_xen.o
obj-$(CONFIG_PARAVIRT_ENTRY) += paravirt_xen.o
--
1.5.3
--
yamahata
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