Hi,
This is a patch to boot domU with initrd.
I confirmed domU could boot with initrd.
It is necessary for runninig xm-test that domU support initrd.
Please comment.
Best Regards,
Akio Takebe
Signed-off-by: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
diff -r 7ef565a7cc86 tools/libxc/xc_linux_build.c
--- a/tools/libxc/xc_linux_build.c Thu Dec 15 23:17:06 2005
+++ b/tools/libxc/xc_linux_build.c Mon Dec 19 19:28:12 2005
@@ -296,9 +296,13 @@
unsigned long *page_array = NULL;
struct load_funcs load_funcs;
struct domain_setup_info dsi;
+ unsigned long vinitrd_start;
+ unsigned long vinitrd_end;
+ unsigned long v_end;
unsigned long start_page, pgnr;
start_info_t *start_info;
int rc;
+ unsigned long i;
rc = probeimageformat(image, image_size, &load_funcs);
if ( rc != 0 )
@@ -310,11 +314,13 @@
if ( rc != 0 )
goto error_out;
- dsi.v_start = round_pgdown(dsi.v_start);
- dsi.v_end = round_pgup(dsi.v_end);
+ dsi.v_start = round_pgdown(dsi.v_start);
+ vinitrd_start = round_pgup(dsi.v_end);
+ vinitrd_end = vinitrd_start + initrd_len;
+ v_end = round_pgup(vinitrd_end);
start_page = dsi.v_start >> PAGE_SHIFT;
- pgnr = (dsi.v_end - dsi.v_start) >> PAGE_SHIFT;
+ pgnr = (v_end - dsi.v_start) >> PAGE_SHIFT;
if ( (page_array = malloc(pgnr * sizeof(unsigned long))) == NULL )
{
PERROR("Could not allocate memory");
@@ -326,9 +332,38 @@
PERROR("Could not get the page frame list");
goto error_out;
}
+
+#define _p(a) ((void *) (a))
+
+ printf("VIRTUAL MEMORY ARRANGEMENT:\n"
+ " Loaded kernel: %p->%p\n"
+ " Init. ramdisk: %p->%p\n"
+ " TOTAL: %p->%p\n",
+ _p(dsi.v_kernstart), _p(dsi.v_kernend),
+ _p(vinitrd_start), _p(vinitrd_end),
+ _p(dsi.v_start), _p(v_end));
+ printf(" ENTRY ADDRESS: %p\n", _p(dsi.v_kernentry));
(load_funcs.loadimage)(image, image_size, xc_handle, dom, page_array,
&dsi);
+
+ /* Load the initial ramdisk image. */
+ if ( initrd_len != 0 )
+ {
+ for ( i = (vinitrd_start - dsi.v_start);
+ i < (vinitrd_end - dsi.v_start); i += PAGE_SIZE )
+ {
+ char page[PAGE_SIZE];
+ if ( gzread(initrd_gfd, page, PAGE_SIZE) == -1 )
+ {
+ PERROR("Error reading initrd image, could not");
+ goto error_out;
+ }
+ xc_copy_to_domain_page(xc_handle, dom,
+ page_array[i>>PAGE_SHIFT], page);
+ }
+ }
+
*pvke = dsi.v_kernentry;
@@ -358,6 +393,11 @@
start_info->store_evtchn = store_evtchn;
start_info->console_mfn = nr_pages - 1;
start_info->console_evtchn = console_evtchn;
+ if ( initrd_len != 0 )
+ {
+ ctxt->initrd.start = vinitrd_start;
+ ctxt->initrd.size = initrd_len;
+ }
munmap(start_info, PAGE_SIZE);
free(page_array);
diff -r 7ef565a7cc86 xen/arch/ia64/xen/dom_fw.c
--- a/xen/arch/ia64/xen/dom_fw.c Thu Dec 15 23:17:06 2005
+++ b/xen/arch/ia64/xen/dom_fw.c Mon Dec 19 19:28:12 2005
@@ -842,9 +842,15 @@
bp->console_info.orig_x = 0;
bp->console_info.orig_y = 24;
bp->fpswa = 0;
- bp->initrd_start = (dom0_start+dom0_size) -
- (PAGE_ALIGN(ia64_boot_param->initrd_size) + 4*1024*1024);
- bp->initrd_size = ia64_boot_param->initrd_size;
+ if (d == dom0){
+ bp->initrd_start = (dom0_start+dom0_size) -
+ (PAGE_ALIGN(ia64_boot_param->initrd_size) +
4*1024*1024);
+ bp->initrd_size = ia64_boot_param->initrd_size;
+ }else{
+ bp->initrd_start = d->arch.initrd_start;
+ bp->initrd_size = d->arch.initrd_len;
+
+ }
printf(" initrd start %0xlx", bp->initrd_start);
printf(" initrd size %0xlx", bp->initrd_size);
diff -r 7ef565a7cc86 xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Thu Dec 15 23:17:06 2005
+++ b/xen/arch/ia64/xen/domain.c Mon Dec 19 19:28:12 2005
@@ -297,6 +297,8 @@
*regs = c->regs;
d->arch.sys_pgnr = c->sys_pgnr;
+ d->arch.initrd_start = c->initrd.start;
+ d->arch.initrd_len = c->initrd.size;
new_thread(v, regs->cr_iip, 0, 0);
v->vcpu_info->arch.evtchn_vector = c->vcpu.evtchn_vector;
diff -r 7ef565a7cc86 xen/include/asm-ia64/domain.h
--- a/xen/include/asm-ia64/domain.h Thu Dec 15 23:17:06 2005
+++ b/xen/include/asm-ia64/domain.h Mon Dec 19 19:28:12 2005
@@ -38,6 +38,8 @@
u64 image_len;
u64 entry;
#endif
+ unsigned long initrd_start;
+ unsigned long initrd_len;
};
#define xen_vastart arch.xen_vastart
#define xen_vaend arch.xen_vaend
diff -r 7ef565a7cc86 xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h Thu Dec 15 23:17:06 2005
+++ b/xen/include/public/arch-ia64.h Mon Dec 19 19:28:12 2005
@@ -276,6 +276,11 @@
unsigned long start_info_pfn;
} arch_shared_info_t;
+typedef struct {
+ unsigned long start;
+ unsigned long size;
+} arch_initrd_info_t;
+
typedef struct vcpu_guest_context {
#define VGCF_FPU_VALID (1<<0)
#define VGCF_VMX_GUEST (1<<1)
@@ -289,6 +294,7 @@
cpu_user_regs_t regs;
arch_vcpu_info_t vcpu;
arch_shared_info_t shared;
+ arch_initrd_info_t initrd;
} vcpu_guest_context_t;
#endif /* !__ASSEMBLY__ */
guest_initrd_support.patch
Description: Binary data
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