# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1198647789 -32400
# Node ID 77cb59b30e8cc1a9ee04f70c462529b1b438b3c7
# Parent 96e207574e536b5ac029e2a1c57ca20ad879a72f
allocate vm buffer before boot allocator
PATCHNAME: allocate_vm_buffer
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
diff -r 96e207574e53 -r 77cb59b30e8c xen/arch/ia64/linux-xen/setup.c
--- a/xen/arch/ia64/linux-xen/setup.c Fri Dec 28 13:10:01 2007 +0900
+++ b/xen/arch/ia64/linux-xen/setup.c Wed Dec 26 14:43:09 2007 +0900
@@ -561,10 +561,10 @@ late_setup_arch (char **cmdline_p)
#endif
#ifndef XEN
find_memory();
-#endif
/* process SAL system table: */
ia64_sal_init(efi.sal_systab);
+#endif
#ifdef CONFIG_SMP
#ifdef XEN
@@ -585,10 +585,6 @@ late_setup_arch (char **cmdline_p)
printk(KERN_INFO
"cpu package is Multi-Threading capable: number of
siblings=%d\n",
smp_num_siblings);
-#endif
-
-#ifdef XEN
- identify_vmx_feature();
#endif
cpu_init(); /* initialize the bootstrap CPU */
@@ -803,12 +799,6 @@ identify_cpu (struct cpuinfo_ia64 *c)
}
c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1));
c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1));
-
-#ifdef XEN
- /* If vmx feature is on, do necessary initialization for vmx */
- if (vmx_enabled)
- vmx_init_env();
-#endif
}
void
diff -r 96e207574e53 -r 77cb59b30e8c xen/arch/ia64/vmx/vmx_init.c
--- a/xen/arch/ia64/vmx/vmx_init.c Fri Dec 28 13:10:01 2007 +0900
+++ b/xen/arch/ia64/vmx/vmx_init.c Wed Dec 26 14:43:09 2007 +0900
@@ -56,7 +56,6 @@
/* Global flag to identify whether Intel vmx feature is on */
u32 vmx_enabled = 0;
-static u32 vm_order;
static u64 buffer_size;
static u64 vp_env_info;
static u64 vm_buffer = 0; /* Buffer required to bring up VMX feature */
@@ -97,8 +96,7 @@ identify_vmx_feature(void)
/* Does xen has ability to decode itself? */
if (!(vp_env_info & VP_OPCODE))
printk("WARNING: no opcode provided from hardware(%lx)!!!\n",
vp_env_info);
- vm_order = get_order(buffer_size);
- printk("vm buffer size: %ld, order: %d\n", buffer_size, vm_order);
+ printk("vm buffer size: %ld\n", buffer_size);
vmx_enabled = 1;
no_vti:
@@ -110,16 +108,33 @@ no_vti:
* vsa_base is the indicator whether it's first LP to be initialized
* for current domain.
*/
-void
-vmx_init_env(void)
+void*
+vmx_init_env(void *start, unsigned long end_in_pa)
{
u64 status, tmp_base;
if (!vm_buffer) {
- vm_buffer = (unsigned long)alloc_xenheap_pages(vm_order);
- ASSERT(vm_buffer);
- vm_buffer = virt_to_xenva((vm_buffer));
- printk("vm_buffer: 0x%lx\n", vm_buffer);
+ /* VM buffer must must be 4K aligned and
+ * must be pinned by both itr and dtr. */
+#define VM_BUFFER_ALIGN (4 * 1024)
+#define VM_BUFFER_ALIGN_UP(x) (((x) + (VM_BUFFER_ALIGN - 1)) & \
+ ~(VM_BUFFER_ALIGN - 1))
+ unsigned long s_vm_buffer =
+ VM_BUFFER_ALIGN_UP((unsigned long)start);
+ unsigned long e_vm_buffer = s_vm_buffer + buffer_size;
+ if (__pa(e_vm_buffer) < end_in_pa) {
+ init_xenheap_pages(__pa(start), __pa(s_vm_buffer));
+ start = (void*)e_vm_buffer;
+ vm_buffer = virt_to_xenva(s_vm_buffer);
+ printk("vm_buffer: 0x%lx\n", vm_buffer);
+ } else {
+ printk("Can't allocate vm_buffer "
+ "start 0x%p end_in_pa 0x%lx "
+ "buffer_size 0x%lx\n",
+ start, end_in_pa, buffer_size);
+ vmx_enabled = 0;
+ return start;
+ }
}
status=ia64_pal_vp_init_env(__vsa_base ? VP_INIT_ENV :
VP_INIT_ENV_INITALIZE,
@@ -129,7 +144,8 @@ vmx_init_env(void)
if (status != PAL_STATUS_SUCCESS) {
printk("ia64_pal_vp_init_env failed.\n");
- return ;
+ vmx_enabled = 0;
+ return start;
}
if (!__vsa_base)
@@ -137,6 +153,7 @@ vmx_init_env(void)
else
ASSERT(tmp_base == __vsa_base);
+ return start;
}
typedef union {
diff -r 96e207574e53 -r 77cb59b30e8c xen/arch/ia64/xen/xensetup.c
--- a/xen/arch/ia64/xen/xensetup.c Fri Dec 28 13:10:01 2007 +0900
+++ b/xen/arch/ia64/xen/xensetup.c Wed Dec 26 14:43:09 2007 +0900
@@ -30,6 +30,7 @@
#include <xen/rcupdate.h>
#include <xsm/acm/acm_hooks.h>
#include <asm/sn/simulator.h>
+#include <linux/asm/sal.h>
unsigned long xenheap_phys_end, total_pages;
@@ -456,6 +457,16 @@ void __init start_kernel(void)
trap_init();
+ /* process SAL system table:*/
+ /* must be before any pal/sal call */
+ ia64_sal_init(efi.sal_systab);
+
+ /* early_setup_arch() maps PAL ocde. */
+ identify_vmx_feature();
+ /* If vmx feature is on, do necessary initialization for vmx */
+ if (vmx_enabled)
+ xen_heap_start = vmx_init_env(xen_heap_start, xenheap_phys_end);
+
init_xenheap_pages(__pa(xen_heap_start), xenheap_phys_end);
printk("Xen heap: %luMB (%lukB)\n",
(xenheap_phys_end-__pa(xen_heap_start)) >> 20,
diff -r 96e207574e53 -r 77cb59b30e8c xen/include/asm-ia64/vmx.h
--- a/xen/include/asm-ia64/vmx.h Fri Dec 28 13:10:01 2007 +0900
+++ b/xen/include/asm-ia64/vmx.h Wed Dec 26 14:43:09 2007 +0900
@@ -29,7 +29,7 @@
extern void identify_vmx_feature(void);
extern unsigned int vmx_enabled;
-extern void vmx_init_env(void);
+extern void *vmx_init_env(void *start, unsigned long end_in_pa);
extern int vmx_final_setup_guest(struct vcpu *v);
extern void vmx_save_state(struct vcpu *v);
extern void vmx_load_state(struct vcpu *v);
16706_77cb59b30e8c_allocate_vm_buffer.patch
Description: Text Data
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