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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [IA64] dom0_max_vcpus and dom0 vcpus creation
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 369bdeb296067c522efcc302eec1504ec12575b5
# Parent a9f5cf43451f228140f221ce8c92c290bf0ab247
[IA64] dom0_max_vcpus and dom0 vcpus creation
dom0_max_vcpus option added (default is 1).
Create dom0 vcpus.
Fix creations issue for SMP-g.
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
diff -r a9f5cf43451f -r 369bdeb29606 xen/arch/ia64/xen/dom_fw.c
--- a/xen/arch/ia64/xen/dom_fw.c Tue Mar 21 18:19:11 2006
+++ b/xen/arch/ia64/xen/dom_fw.c Wed Mar 22 15:53:20 2006
@@ -79,7 +79,7 @@
// FIXME: This is really a hack: Forcing the boot parameter block
// at domain mpaddr 0 page, then grabbing only the low bits of the
// Xen imva, which is the offset into the page
-unsigned long dom_fw_setup(struct domain *d, char *args, int arglen)
+unsigned long dom_fw_setup(struct domain *d, const char *args, int arglen)
{
struct ia64_boot_param *bp;
@@ -349,28 +349,31 @@
#endif
}
-#define LSAPIC_NUM 16 // TEMP
-static u32 lsapic_flag=1;
-
-/* Provide only one LP to guest */
+
+static u32 lsapic_nbr;
+
+/* Modify lsapic table. Provides LPs. */
static int
acpi_update_lsapic (acpi_table_entry_header *header, const unsigned long end)
{
struct acpi_table_lsapic *lsapic;
+ int enable;
lsapic = (struct acpi_table_lsapic *) header;
if (!lsapic)
return -EINVAL;
- if (lsapic->flags.enabled && lsapic_flag) {
+ if (lsapic_nbr < MAX_VIRT_CPUS && dom0->vcpu[lsapic_nbr] != NULL)
+ enable = 1;
+ else
+ enable = 0;
+ if (lsapic->flags.enabled && enable) {
printk("enable lsapic entry: 0x%lx\n", (u64)lsapic);
- lsapic_flag = 0; /* disable all the following processros */
+ lsapic_nbr++;
} else if (lsapic->flags.enabled) {
printk("DISABLE lsapic entry: 0x%lx\n", (u64)lsapic);
lsapic->flags.enabled = 0;
- } else
- printk("lsapic entry is already disabled: 0x%lx\n",
(u64)lsapic);
-
+ }
return 0;
}
@@ -403,6 +406,7 @@
/* base is physical address of acpi table */
static void touch_acpi_table(void)
{
+ lsapic_nbr = 0;
if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_update_lsapic, 0) < 0)
printk("Error parsing MADT - no LAPIC entires\n");
acpi_table_parse(ACPI_APIC, acpi_update_madt_checksum);
diff -r a9f5cf43451f -r 369bdeb29606 xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Tue Mar 21 18:19:11 2006
+++ b/xen/arch/ia64/xen/domain.c Wed Mar 22 15:53:20 2006
@@ -52,23 +52,23 @@
#include <public/arch-ia64.h>
#include <asm/tlbflush.h>
#include <asm/regionreg.h>
+#include <asm/dom_fw.h>
#define CONFIG_DOMAIN0_CONTIGUOUS
unsigned long dom0_start = -1L;
unsigned long dom0_size = 512*1024*1024;
unsigned long dom0_align = 64*1024*1024;
+/* dom0_max_vcpus: maximum number of VCPUs to create for dom0. */
+static unsigned int dom0_max_vcpus = 1;
+integer_param("dom0_max_vcpus", dom0_max_vcpus);
+
// initialized by arch/ia64/setup.c:find_initrd()
unsigned long initrd_start = 0, initrd_end = 0;
extern unsigned long running_on_sim;
#define IS_XEN_ADDRESS(d,a) ((a >= d->xen_vastart) && (a <= d->xen_vaend))
-//extern int loadelfimage(char *);
-extern int readelfimage_base_and_size(char *, unsigned long,
- unsigned long *, unsigned long *, unsigned long *);
-
-extern unsigned long dom_fw_setup(struct domain *, char *, int);
/* FIXME: where these declarations should be there ? */
extern void domain_pend_keyboard_interrupt(int);
extern long platform_is_hp_ski(void);
@@ -315,22 +315,28 @@
}
*regs = c->regs;
- d->arch.sys_pgnr = c->sys_pgnr;
- d->arch.initrd_start = c->initrd.start;
- d->arch.initrd_len = c->initrd.size;
- d->arch.cmdline = c->cmdline;
+ if (v == d->vcpu[0]) {
+ /* Only for first vcpu. */
+ d->arch.sys_pgnr = c->sys_pgnr;
+ d->arch.initrd_start = c->initrd.start;
+ d->arch.initrd_len = c->initrd.size;
+ d->arch.cmdline = c->cmdline;
+ d->shared_info->arch = c->shared;
+
+ /* FIXME: it is required here ? */
+ sync_split_caches();
+ }
new_thread(v, regs->cr_iip, 0, 0);
- sync_split_caches();
v->vcpu_info->arch.evtchn_vector = c->vcpu.evtchn_vector;
if ( c->vcpu.privregs && copy_from_user(v->arch.privregs,
c->vcpu.privregs, sizeof(mapped_regs_t))) {
- printk("Bad ctxt address in arch_set_info_guest: %p\n",
c->vcpu.privregs);
+ printk("Bad ctxt address in arch_set_info_guest: %p\n",
+ c->vcpu.privregs);
return -EFAULT;
}
v->arch.domain_itm_last = -1L;
- d->shared_info->arch = c->shared;
/* Don't redo final setup */
set_bit(_VCPUF_initialised, &v->vcpu_flags);
@@ -419,7 +425,7 @@
extern char dom0_command_line[];
#ifdef CONFIG_DOMAIN0_CONTIGUOUS
- if (d == dom0) start_pc += dom0_start;
+ if (d == dom0 && v->vcpu_id == 0) start_pc += dom0_start;
#endif
regs = vcpu_regs (v);
@@ -447,24 +453,33 @@
VCPU(v, dcr) = 0;
} else {
init_all_rr(v);
- if (d == dom0)
- regs->r28 = dom_fw_setup(d,dom0_command_line,
- COMMAND_LINE_SIZE);
- else {
- regs->ar_rsc |= (2 << 2); /* force PL2/3 */
- if (*d->arch.cmdline == '\0') {
+ if (v->vcpu_id == 0) {
+ /* Build the firmware. */
+ if (d == dom0)
+ regs->r28 = dom_fw_setup(d,dom0_command_line,
+ COMMAND_LINE_SIZE);
+ else {
+ const char *cmdline = d->arch.cmdline;
+ int len;
+
+ if (*cmdline == 0) {
#define DEFAULT_CMDLINE "nomca nosmp xencons=tty0 console=tty0 root=/dev/hda1"
- regs->r28 = dom_fw_setup(d,DEFAULT_CMDLINE,
- sizeof (DEFAULT_CMDLINE));
- printf("domU command line defaulted to"
- DEFAULT_CMDLINE "\n");
- }
- else regs->r28 = dom_fw_setup(d,d->arch.cmdline,
- IA64_COMMAND_LINE_SIZE);
+ cmdline = DEFAULT_CMDLINE;
+ len = sizeof (DEFAULT_CMDLINE);
+ printf("domU command line defaulted to"
+ DEFAULT_CMDLINE "\n");
+ }
+ else
+ len = IA64_COMMAND_LINE_SIZE;
+
+ regs->r28 = dom_fw_setup (d, cmdline, len);
+ }
+ d->shared_info->arch.flags = (d == dom0) ?
+ (SIF_INITDOMAIN|SIF_PRIVILEGED) : 0;
}
+ regs->ar_rsc |= (2 << 2); /* force PL2/3 */
VCPU(v, banknum) = 1;
VCPU(v, metaphysical_mode) = 1;
- d->shared_info->arch.flags = (d == dom0) ?
(SIF_INITDOMAIN|SIF_PRIVILEGED) : 0;
}
}
@@ -960,6 +975,18 @@
for ( i = 1; i < MAX_VIRT_CPUS; i++ )
d->shared_info->vcpu_info[i].evtchn_upcall_mask = 1;
+ if (dom0_max_vcpus == 0)
+ dom0_max_vcpus = MAX_VIRT_CPUS;
+ if (dom0_max_vcpus > num_online_cpus())
+ dom0_max_vcpus = num_online_cpus();
+ if (dom0_max_vcpus > MAX_VIRT_CPUS)
+ dom0_max_vcpus = MAX_VIRT_CPUS;
+
+ printf ("Dom0 max_vcpus=%d\n", dom0_max_vcpus);
+ for ( i = 1; i < dom0_max_vcpus; i++ )
+ if (alloc_vcpu(d, i, i) == NULL)
+ printf ("Cannot allocate dom0 vcpu %d\n", i);
+
#ifdef VALIDATE_VT
/* Construct a frame-allocation list for the initial domain, since these
* pages are allocated by boot allocator and pfns are not set properly
diff -r a9f5cf43451f -r 369bdeb29606 xen/include/asm-ia64/dom_fw.h
--- a/xen/include/asm-ia64/dom_fw.h Tue Mar 21 18:19:11 2006
+++ b/xen/include/asm-ia64/dom_fw.h Wed Mar 22 15:53:20 2006
@@ -6,7 +6,7 @@
*/
extern unsigned long dom_pa(unsigned long);
-extern unsigned long dom_fw_setup(struct domain *, char *, int);
+extern unsigned long dom_fw_setup(struct domain *, const char *, int);
#ifndef MB
#define MB (1024*1024)
@@ -135,5 +135,3 @@
extern void build_pal_hypercall_bundles(unsigned long *imva, unsigned long
brkimm, unsigned long hypnum);
extern void build_hypercall_bundle(UINT64 *imva, UINT64 brkimm, UINT64 hypnum,
UINT64 ret);
-
-
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