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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [patch] libxc x86-64
ChangeSet 1.1669, 2005/06/03 22:50:54+01:00, iap10@xxxxxxxxxxxxxxxxxxxxx
[patch] libxc x86-64
I've redone the patch to add domU launching support to libxc for x86-64.
Signed-off-by: Jerone Young <jyoung5@xxxxxxxxxx>
Signed-off-by: ian@xxxxxxxxxxxxx
xc_linux_build.c | 165 +++++++++++++++++++++++++++++++++++++++++++++++--------
xc_private.h | 32 ++++++++++
2 files changed, 173 insertions(+), 24 deletions(-)
diff -Nru a/tools/libxc/xc_linux_build.c b/tools/libxc/xc_linux_build.c
--- a/tools/libxc/xc_linux_build.c 2005-06-03 18:03:15 -04:00
+++ b/tools/libxc/xc_linux_build.c 2005-06-03 18:03:15 -04:00
@@ -3,13 +3,32 @@
*/
#include "xc_private.h"
+
+#if defined(__i386__)
#define ELFSIZE 32
+#endif
+
+#if defined(__x86_64__)
+#define ELFSIZE 64
+#endif
+
+
#include "xc_elf.h"
#include <stdlib.h>
#include <zlib.h>
+#if defined(__i386__)
#define L1_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED)
#define L2_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER)
+#endif
+
+#if defined(__x86_64__)
+#define L1_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_USER)
+#define L2_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER)
+#define L3_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER)
+#define L4_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER)
+#endif
+
#define round_pgup(_p) (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
#define round_pgdown(_p) ((_p)&PAGE_MASK)
@@ -54,9 +73,17 @@
{
l1_pgentry_t *vl1tab=NULL, *vl1e=NULL;
l2_pgentry_t *vl2tab=NULL, *vl2e=NULL;
+#if defined(__x86_64__)
+ l3_pgentry_t *vl3tab=NULL, *vl3e=NULL;
+ l4_pgentry_t *vl4tab=NULL, *vl4e=NULL;
+#endif
unsigned long *page_array = NULL;
- unsigned long l2tab;
- unsigned long l1tab;
+ unsigned long l2tab = 0;
+ unsigned long l1tab = 0;
+#if defined(__x86_64__)
+ unsigned long l3tab = 0;
+ unsigned long l4tab = 0;
+#endif
unsigned long count, i;
start_info_t *start_info;
shared_info_t *shared_info;
@@ -111,30 +138,45 @@
vstartinfo_end = vstartinfo_start + PAGE_SIZE;
vstack_start = vstartinfo_end;
vstack_end = vstack_start + PAGE_SIZE;
- v_end = (vstack_end + (1<<22)-1) & ~((1<<22)-1);
- if ( (v_end - vstack_end) < (512 << 10) )
- v_end += 1 << 22; /* Add extra 4MB to get >= 512kB padding. */
+ v_end = (vstack_end + (1UL<<22)-1) & ~((1UL<<22)-1);
+ if ( (v_end - vstack_end) < (512UL << 10) )
+ v_end += 1UL << 22; /* Add extra 4MB to get >= 512kB padding. */
+#if defined(__i386__)
if ( (((v_end - dsi.v_start + ((1<<L2_PAGETABLE_SHIFT)-1)) >>
L2_PAGETABLE_SHIFT) + 1) <= nr_pt_pages )
break;
+#endif
+#if defined(__x86_64__)
+#define NR(_l,_h,_s) \
+ (((((_h) + ((1UL<<(_s))-1)) & ~((1UL<<(_s))-1)) - \
+ ((_l) & ~((1UL<<(_s))-1))) >> (_s))
+ if ( (1 + /* # L4 */
+ NR(dsi.v_start, v_end, L4_PAGETABLE_SHIFT) + /* # L3 */
+ NR(dsi.v_start, v_end, L3_PAGETABLE_SHIFT) + /* # L2 */
+ NR(dsi.v_start, v_end, L2_PAGETABLE_SHIFT)) /* # L1 */
+ <= nr_pt_pages )
+ break;
+#endif
}
+#define _p(a) ((void *) (a))
+
printf("VIRTUAL MEMORY ARRANGEMENT:\n"
- " Loaded kernel: %08lx->%08lx\n"
- " Init. ramdisk: %08lx->%08lx\n"
- " Phys-Mach map: %08lx->%08lx\n"
- " Page tables: %08lx->%08lx\n"
- " Start info: %08lx->%08lx\n"
- " Boot stack: %08lx->%08lx\n"
- " TOTAL: %08lx->%08lx\n",
- dsi.v_kernstart, dsi.v_kernend,
- vinitrd_start, vinitrd_end,
- vphysmap_start, vphysmap_end,
- vpt_start, vpt_end,
- vstartinfo_start, vstartinfo_end,
- vstack_start, vstack_end,
- dsi.v_start, v_end);
- printf(" ENTRY ADDRESS: %08lx\n", dsi.v_kernentry);
+ " Loaded kernel: %p->%p\n"
+ " Init. ramdisk: %p->%p\n"
+ " Phys-Mach map: %p->%p\n"
+ " Page tables: %p->%p\n"
+ " Start info: %p->%p\n"
+ " Boot stack: %p->%p\n"
+ " TOTAL: %p->%p\n",
+ _p(dsi.v_kernstart), _p(dsi.v_kernend),
+ _p(vinitrd_start), _p(vinitrd_end),
+ _p(vphysmap_start), _p(vphysmap_end),
+ _p(vpt_start), _p(vpt_end),
+ _p(vstartinfo_start), _p(vstartinfo_end),
+ _p(vstack_start), _p(vstack_end),
+ _p(dsi.v_start), _p(v_end));
+ printf(" ENTRY ADDRESS: %p\n", _p(dsi.v_kernentry));
if ( (v_end - dsi.v_start) > (nr_pages * PAGE_SIZE) )
{
@@ -178,6 +220,7 @@
if ( (mmu = init_mmu_updates(xc_handle, dom)) == NULL )
goto error_out;
+#if defined(__i386__)
/* First allocate page for page dir. */
ppt_alloc = (vpt_start - dsi.v_start) >> PAGE_SHIFT;
l2tab = page_array[ppt_alloc++] << PAGE_SHIFT;
@@ -217,6 +260,74 @@
}
munmap(vl1tab, PAGE_SIZE);
munmap(vl2tab, PAGE_SIZE);
+#endif
+#if defined(__x86_64__)
+
+#define alloc_pt(ltab, vltab) \
+ ltab = page_array[ppt_alloc++] << PAGE_SHIFT; \
+ if (vltab != NULL) { \
+ munmap(vltab, PAGE_SIZE); \
+ } \
+ if ((vltab = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE, \
+ PROT_READ|PROT_WRITE, \
+ ltab >> PAGE_SHIFT)) == NULL) { \
+ munmap(vltab, PAGE_SIZE); \
+ goto error_out; \
+ } \
+ memset(vltab, 0, PAGE_SIZE);
+
+ /* First allocate page for page dir. */
+ ppt_alloc = (vpt_start - dsi.v_start) >> PAGE_SHIFT;
+ l4tab = page_array[ppt_alloc++] << PAGE_SHIFT;
+ ctxt->pt_base = l4tab;
+
+ /* Intiliaize page table */
+ if ( (vl4tab = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE,
+ l4tab >> PAGE_SHIFT)) == NULL )
+ goto error_out;
+ memset(vl4tab, 0, PAGE_SIZE);
+ vl4e = &vl4tab[l4_table_offset(dsi.v_start)];
+
+ for ( count = 0; count < ((v_end-dsi.v_start)>>PAGE_SHIFT); count++)
+ {
+ if ( !((unsigned long)vl1e & (PAGE_SIZE-1)) )
+ {
+ alloc_pt(l1tab, vl1tab);
+
+ if ( !((unsigned long)vl2e & (PAGE_SIZE-1)) )
+ {
+ alloc_pt(l2tab, vl2tab);
+ if ( !((unsigned long)vl3e & (PAGE_SIZE-1)) )
+ {
+ alloc_pt(l3tab, vl3tab);
+ vl3e = &vl3tab[l3_table_offset(dsi.v_start +
(count<<PAGE_SHIFT))];
+ *vl4e = l3tab | L4_PROT;
+ vl4e++;
+ }
+ vl2e = &vl2tab[l2_table_offset(dsi.v_start +
(count<<PAGE_SHIFT))];
+ *vl3e = l2tab | L3_PROT;
+ vl3e++;
+ }
+ vl1e = &vl1tab[l1_table_offset(dsi.v_start + (count<<PAGE_SHIFT))];
+ *vl2e = l1tab | L2_PROT;
+ vl2e++;
+ }
+
+ *vl1e = (page_array[count] << PAGE_SHIFT) | L1_PROT;
+ if ( (count >= ((vpt_start-dsi.v_start)>>PAGE_SHIFT)) &&
+ (count < ((vpt_end -dsi.v_start)>>PAGE_SHIFT)) )
+ {
+ *vl1e &= ~_PAGE_RW;
+ }
+ vl1e++;
+ }
+
+ munmap(vl1tab, PAGE_SIZE);
+ munmap(vl2tab, PAGE_SIZE);
+ munmap(vl3tab, PAGE_SIZE);
+ munmap(vl4tab, PAGE_SIZE);
+#endif
/* Write the phys->machine and machine->phys table entries. */
physmap_pfn = (vphysmap_start - dsi.v_start) >> PAGE_SHIFT;
@@ -243,13 +354,23 @@
}
munmap(physmap, PAGE_SIZE);
+#if defined(__i386__)
/*
* Pin down l2tab addr as page dir page - causes hypervisor to provide
* correct protection for the page
*/
if ( pin_table(xc_handle, MMUEXT_PIN_L2_TABLE, l2tab>>PAGE_SHIFT, dom) )
goto error_out;
+#endif
+#if defined(__x86_64__)
+ /*
+ * Pin down l4tab addr as page dir page - causes hypervisor to provide
+ * correct protection for the page
+ */
+ if ( pin_table(xc_handle, MMUEXT_PIN_L4_TABLE, l4tab>>PAGE_SHIFT, dom) )
+ goto error_out;
+#endif
start_info = xc_map_foreign_range(
xc_handle, dom, PAGE_SIZE, PROT_READ|PROT_WRITE,
page_array[(vstartinfo_start-dsi.v_start)>>PAGE_SHIFT]);
@@ -409,7 +530,7 @@
ctxt->user_regs.es = FLAT_KERNEL_DS;
ctxt->user_regs.fs = FLAT_KERNEL_DS;
ctxt->user_regs.gs = FLAT_KERNEL_DS;
- ctxt->user_regs.ss = FLAT_KERNEL_DS;
+ ctxt->user_regs.ss = FLAT_KERNEL_SS;
ctxt->user_regs.cs = FLAT_KERNEL_CS;
ctxt->user_regs.eip = vkern_entry;
ctxt->user_regs.esp = vstartinfo_start + 2*PAGE_SIZE;
@@ -433,7 +554,7 @@
ctxt->gdt_ents = 0;
/* Ring 1 stack is the initial stack. */
- ctxt->kernel_ss = FLAT_KERNEL_DS;
+ ctxt->kernel_ss = FLAT_KERNEL_SS;
ctxt->kernel_sp = vstartinfo_start + 2*PAGE_SIZE;
/* No debugging. */
diff -Nru a/tools/libxc/xc_private.h b/tools/libxc/xc_private.h
--- a/tools/libxc/xc_private.h 2005-06-03 18:03:15 -04:00
+++ b/tools/libxc/xc_private.h 2005-06-03 18:03:15 -04:00
@@ -29,12 +29,25 @@
#define _PAGE_PSE 0x080
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