# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1219845219 -3600
# Node ID dade7f0bdc8d6b36b1914598d83c616ee5ce97cb
# Parent 2397555ebcc2d60e03f2a400eeaa58033bda7382
hvm: Use main memory for video memory.
When creating an HVM domain, if e.g. another domain is created before
qemu allocates video memory, the extra 8MB memory ballooning is not
available any more, because it got consumed by the other domain.
This fixes it by taking video memory from the main memory:
- make hvmloader use e820_malloc to reserve some of the main memory
and notify ioemu of its address through the Xen platform PCI card.
- add XENMAPSPACE_mfn to the xen_add_to_physmap memory op, to allow
ioemu to move the MFNs between the original position and the PCI
mapping, when LFB acceleration is disabled/enabled
- add a remove_from_physmap memory op, to allow ioemu to unmap it
completely for the case of old guests with acceleration disabled.
- add xc_domain_memory_translate_gpfn_list to libxc to allow ioemu to
get the MFNs of the video memory.
- have xend save the PCI memory space instead of ioemu: if a memory
page is there, the guest can access it like usual memory, so xend
can safely be responsible to save it. The extra benefit is that
live migration will apply the logdirty optimization there too.
- handle old saved images, populating the video memory from ioemu if
really needed.
Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
---
tools/firmware/hvmloader/32bitbios_support.c | 2
tools/firmware/hvmloader/acpi/build.c | 4
tools/firmware/hvmloader/hvmloader.c | 18 +-
tools/firmware/hvmloader/util.c | 21 +-
tools/firmware/hvmloader/util.h | 2
tools/ioemu/hw/cirrus_vga.c | 218 +++++++++------------------
tools/ioemu/hw/vga.c | 150 +++++++++++++-----
tools/ioemu/hw/vga_int.h | 4
tools/ioemu/hw/xen_platform.c | 38 ++++
tools/ioemu/vl.c | 32 ---
tools/ioemu/vl.h | 3
tools/libxc/xc_domain.c | 27 +++
tools/libxc/xc_domain_save.c | 6
tools/libxc/xenctrl.h | 6
xen/arch/ia64/xen/mm.c | 70 ++++++++
xen/arch/x86/mm.c | 58 +++++++
xen/arch/x86/x86_64/compat/mm.c | 14 +
xen/include/public/memory.h | 17 ++
xen/include/xlat.lst | 1
xen/include/xsm/xsm.h | 6
xen/xsm/dummy.c | 6
xen/xsm/flask/hooks.c | 6
22 files changed, 475 insertions(+), 234 deletions(-)
diff -r 2397555ebcc2 -r dade7f0bdc8d
tools/firmware/hvmloader/32bitbios_support.c
--- a/tools/firmware/hvmloader/32bitbios_support.c Wed Aug 27 13:31:01
2008 +0100
+++ b/tools/firmware/hvmloader/32bitbios_support.c Wed Aug 27 14:53:39
2008 +0100
@@ -76,7 +76,7 @@ static void relocate_32bitbios(char *elf
*/
reloc_size = reloc_off;
printf("%d bytes of ROMBIOS high-memory extensions:\n", reloc_size);
- highbiosarea = (char *)(long)e820_malloc(reloc_size);
+ highbiosarea = (char *)(long)e820_malloc(reloc_size, 0);
BUG_ON(highbiosarea == NULL);
printf(" Relocating to 0x%x-0x%x ... ",
(uint32_t)&highbiosarea[0],
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/firmware/hvmloader/acpi/build.c
--- a/tools/firmware/hvmloader/acpi/build.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/firmware/hvmloader/acpi/build.c Wed Aug 27 14:53:39 2008 +0100
@@ -233,7 +233,7 @@ static int construct_secondary_tables(ui
tcpa->header.oem_revision = ACPI_OEM_REVISION;
tcpa->header.creator_id = ACPI_CREATOR_ID;
tcpa->header.creator_revision = ACPI_CREATOR_REVISION;
- tcpa->lasa = e820_malloc(ACPI_2_0_TCPA_LAML_SIZE);
+ tcpa->lasa = e820_malloc(ACPI_2_0_TCPA_LAML_SIZE, 0);
if ( tcpa->lasa )
{
tcpa->laml = ACPI_2_0_TCPA_LAML_SIZE;
@@ -363,7 +363,7 @@ void acpi_build_tables(void)
memset(buf, 0, high_sz);
/* Allocate data area and set up ACPI tables there. */
- buf = (uint8_t *)e820_malloc(high_sz);
+ buf = (uint8_t *)e820_malloc(high_sz, 0);
__acpi_build_tables(buf, &low_sz, &high_sz);
printf(" - Lo data: %08lx-%08lx\n"
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/firmware/hvmloader/hvmloader.c
--- a/tools/firmware/hvmloader/hvmloader.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/firmware/hvmloader/hvmloader.c Wed Aug 27 14:53:39 2008 +0100
@@ -430,11 +430,13 @@ static void cmos_write_memory_size(void)
cmos_outb(0x35, (uint8_t)( alt_mem >> 8));
}
-static void init_xen_platform_io_base(void)
+static uint16_t init_xen_platform_io_base(void)
{
struct bios_info *bios_info = (struct bios_info *)ACPI_PHYSICAL_ADDRESS;
uint32_t devfn, bar_data;
uint16_t vendor_id, device_id;
+
+ bios_info->xen_pfiob = 0;
for ( devfn = 0; devfn < 128; devfn++ )
{
@@ -445,12 +447,16 @@ static void init_xen_platform_io_base(vo
bar_data = pci_readl(devfn, PCI_BASE_ADDRESS_0);
bios_info->xen_pfiob = bar_data & PCI_BASE_ADDRESS_IO_MASK;
}
+
+ return bios_info->xen_pfiob;
}
int main(void)
{
int vgabios_sz = 0, etherboot_sz = 0, rombios_sz, smbios_sz;
int extboot_sz = 0;
+ uint32_t vga_ram = 0;
+ uint16_t xen_pfiob;
printf("HVM Loader\n");
@@ -495,6 +501,12 @@ int main(void)
default:
printf("No emulated VGA adaptor ...\n");
break;
+ }
+
+ if ( virtual_vga != VGA_none )
+ {
+ vga_ram = e820_malloc(8 << 20, 4096);
+ printf("VGA RAM at %08x\n", vga_ram);
}
etherboot_sz = scan_etherboot_nic((void*)ETHERBOOT_PHYSICAL_ADDRESS);
@@ -537,7 +549,9 @@ int main(void)
ROMBIOS_PHYSICAL_ADDRESS,
ROMBIOS_PHYSICAL_ADDRESS + rombios_sz - 1);
- init_xen_platform_io_base();
+ xen_pfiob = init_xen_platform_io_base();
+ if ( xen_pfiob && vga_ram )
+ outl(xen_pfiob + 4, vga_ram);
printf("Invoking ROMBIOS ...\n");
return 0;
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/firmware/hvmloader/util.c
--- a/tools/firmware/hvmloader/util.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/firmware/hvmloader/util.c Wed Aug 27 14:53:39 2008 +0100
@@ -325,35 +325,34 @@ static void e820_collapse(void)
}
}
-uint32_t e820_malloc(uint32_t size)
+uint32_t e820_malloc(uint32_t size, uint32_t align)
{
uint32_t addr;
int i;
struct e820entry *ent = (struct e820entry *)HVM_E820;
- /* Align allocation request to a reasonable boundary (1kB). */
- size = (size + 1023) & ~1023;
+ /* Align to at leats one kilobyte. */
+ if ( align < 1024 )
+ align = 1024;
for ( i = *HVM_E820_NR - 1; i >= 0; i-- )
{
- addr = ent[i].addr;
+ addr = (ent[i].size - size) & ~(align-1);
if ( (ent[i].type != E820_RAM) || /* not ram? */
- (ent[i].size < size) || /* too small? */
- (addr != ent[i].addr) || /* starts above 4gb? */
+ (addr < ent[i].addr) || /* too small or starts above 4gb? */
((addr + size) < addr) ) /* ends above 4gb? */
continue;
- if ( ent[i].size != size )
+ if ( addr != ent[i].addr )
{
memmove(&ent[i+1], &ent[i], (*HVM_E820_NR-i) * sizeof(*ent));
(*HVM_E820_NR)++;
- ent[i].size -= size;
- addr += ent[i].size;
+ ent[i].size = addr - ent[i].addr;
+ ent[i+1].addr = addr;
+ ent[i+1].size -= ent[i].size;
i++;
}
- ent[i].addr = addr;
- ent[i].size = size;
ent[i].type = E820_RESERVED;
e820_collapse();
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/firmware/hvmloader/util.h
--- a/tools/firmware/hvmloader/util.h Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/firmware/hvmloader/util.h Wed Aug 27 14:53:39 2008 +0100
@@ -132,7 +132,7 @@ int vprintf(const char *fmt, va_list ap)
int vprintf(const char *fmt, va_list ap);
/* Reserve a RAM region in the e820 table. */
-uint32_t e820_malloc(uint32_t size);
+uint32_t e820_malloc(uint32_t size, uint32_t align);
/* Prepare the 32bit BIOS */
void highbios_setup(void);
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/hw/cirrus_vga.c
--- a/tools/ioemu/hw/cirrus_vga.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/hw/cirrus_vga.c Wed Aug 27 14:53:39 2008 +0100
@@ -2543,34 +2543,28 @@ static CPUWriteMemoryFunc *cirrus_linear
cirrus_linear_bitblt_writel,
};
-static void *set_vram_mapping(unsigned long begin, unsigned long end)
-{
- xen_pfn_t *extent_start = NULL;
- unsigned long nr_extents;
- void *vram_pointer = NULL;
- int i;
-
- /* align begin and end address */
- begin = begin & TARGET_PAGE_MASK;
- end = begin + VGA_RAM_SIZE;
- end = (end + TARGET_PAGE_SIZE -1 ) & TARGET_PAGE_MASK;
- nr_extents = (end - begin) >> TARGET_PAGE_BITS;
-
- extent_start = malloc(sizeof(xen_pfn_t) * nr_extents);
- if (extent_start == NULL) {
- fprintf(stderr, "Failed malloc on set_vram_mapping\n");
- return NULL;
- }
-
- memset(extent_start, 0, sizeof(xen_pfn_t) * nr_extents);
-
- for (i = 0; i < nr_extents; i++)
- extent_start[i] = (begin + i * TARGET_PAGE_SIZE) >> TARGET_PAGE_BITS;
-
- if (set_mm_mapping(xc_handle, domid, nr_extents, 0, extent_start) < 0) {
- fprintf(logfile, "Failed set_mm_mapping\n");
- free(extent_start);
- return NULL;
+static void set_vram_mapping(CirrusVGAState *s, unsigned long begin, unsigned
long end)
+{
+ unsigned long i;
+ struct xen_add_to_physmap xatp;
+ int rc;
+
+ if (end > begin + VGA_RAM_SIZE)
+ end = begin + VGA_RAM_SIZE;
+
+ fprintf(logfile,"mapping vram to %lx - %lx\n", begin, end);
+
+ xatp.domid = domid;
+ xatp.space = XENMAPSPACE_mfn;
+
+ for (i = 0; i < (end - begin) >> TARGET_PAGE_BITS; i++) {
+ xatp.idx = s->vram_mfns[i];
+ xatp.gpfn = (begin >> TARGET_PAGE_BITS) + i;
+ rc = xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
+ if (rc) {
+ fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN
%"PRI_xen_pfn" failed: %d\n", xatp.idx, xatp.gpfn, rc);
+ return;
+ }
}
(void)xc_domain_pin_memory_cacheattr(
@@ -2578,61 +2572,42 @@ static void *set_vram_mapping(unsigned l
begin >> TARGET_PAGE_BITS,
end >> TARGET_PAGE_BITS,
XEN_DOMCTL_MEM_CACHEATTR_WB);
-
- vram_pointer = xc_map_foreign_pages(xc_handle, domid,
- PROT_READ|PROT_WRITE,
- extent_start, nr_extents);
- if (vram_pointer == NULL) {
- fprintf(logfile, "xc_map_foreign_batch vgaram returned error %d\n",
- errno);
- free(extent_start);
- return NULL;
- }
-
- memset(vram_pointer, 0, nr_extents * TARGET_PAGE_SIZE);
-
-#ifdef CONFIG_STUBDOM
- xenfb_pv_display_start(vram_pointer);
-#endif
-
- free(extent_start);
-
- return vram_pointer;
-}
-
-static int unset_vram_mapping(unsigned long begin, unsigned long end,
- void *mapping)
-{
- xen_pfn_t *extent_start = NULL;
- unsigned long nr_extents;
- int i;
-
- /* align begin and end address */
-
- end = begin + VGA_RAM_SIZE;
- begin = begin & TARGET_PAGE_MASK;
- end = (end + TARGET_PAGE_SIZE -1 ) & TARGET_PAGE_MASK;
- nr_extents = (end - begin) >> TARGET_PAGE_BITS;
-
- extent_start = malloc(sizeof(xen_pfn_t) * nr_extents);
-
- if (extent_start == NULL) {
- fprintf(stderr, "Failed malloc on set_mm_mapping\n");
- return -1;
- }
-
- /* Drop our own references to the vram pages */
- munmap(mapping, nr_extents * TARGET_PAGE_SIZE);
-
- /* Now drop the guest's mappings */
- memset(extent_start, 0, sizeof(xen_pfn_t) * nr_extents);
- for (i = 0; i < nr_extents; i++)
- extent_start[i] = (begin + (i * TARGET_PAGE_SIZE)) >> TARGET_PAGE_BITS;
- unset_mm_mapping(xc_handle, domid, nr_extents, 0, extent_start);
-
- free(extent_start);
-
- return 0;
+}
+
+static void unset_vram_mapping(CirrusVGAState *s, unsigned long begin,
unsigned long end)
+{
+ if (s->stolen_vram_addr) {
+ /* We can put it there for xend to save it efficiently */
+ set_vram_mapping(s, s->stolen_vram_addr, s->stolen_vram_addr +
VGA_RAM_SIZE);
+ } else {
+ /* Old image, we have to unmap them completely */
+ struct xen_remove_from_physmap xrfp;
+ unsigned long i;
+ int rc;
+
+ if (end > begin + VGA_RAM_SIZE)
+ end = begin + VGA_RAM_SIZE;
+
+ fprintf(logfile,"unmapping vram from %lx - %lx\n", begin, end);
+
+ xrfp.domid = domid;
+
+ for (i = 0; i < (end - begin) >> TARGET_PAGE_BITS; i++) {
+ xrfp.gpfn = (begin >> TARGET_PAGE_BITS) + i;
+ rc = xc_memory_op(xc_handle, XENMEM_remove_from_physmap, &xrfp);
+ if (rc) {
+ fprintf(stderr, "remove_from_physmap PFN %"PRI_xen_pfn"
failed: %d\n", xrfp.gpfn, rc);
+ return;
+ }
+ }
+ }
+}
+
+void cirrus_restart_acc(CirrusVGAState *s)
+{
+ set_vram_mapping(s, s->lfb_addr, s->lfb_end);
+ s->map_addr = s->lfb_addr;
+ s->map_end = s->lfb_end;
}
/* Compute the memory access functions */
@@ -2654,17 +2629,7 @@ static void cirrus_update_memory_access(
mode = s->gr[0x05] & 0x7;
if (mode < 4 || mode > 5 || ((s->gr[0x0B] & 0x4) == 0)) {
if (s->lfb_addr && s->lfb_end && !s->map_addr) {
- void *vram_pointer, *old_vram;
-
- vram_pointer = set_vram_mapping(s->lfb_addr,
- s->lfb_end);
- if (!vram_pointer)
- fprintf(stderr, "NULL vram_pointer\n");
- else {
- old_vram = vga_update_vram((VGAState *)s, vram_pointer,
- VGA_RAM_SIZE);
- qemu_free(old_vram);
- }
+ set_vram_mapping(s, s->lfb_addr, s->lfb_end);
s->map_addr = s->lfb_addr;
s->map_end = s->lfb_end;
}
@@ -2674,14 +2639,7 @@ static void cirrus_update_memory_access(
} else {
generic_io:
if (s->lfb_addr && s->lfb_end && s->map_addr) {
- void *old_vram;
-
- old_vram = vga_update_vram((VGAState *)s, NULL, VGA_RAM_SIZE);
-
- unset_vram_mapping(s->lfb_addr,
- s->lfb_end,
- old_vram);
-
+ unset_vram_mapping(s, s->map_addr, s->map_end);
s->map_addr = s->map_end = 0;
}
s->cirrus_linear_write[0] = cirrus_linear_writeb;
@@ -3040,36 +2998,6 @@ static CPUWriteMemoryFunc *cirrus_mmio_w
cirrus_mmio_writel,
};
-void cirrus_stop_acc(CirrusVGAState *s)
-{
- if (s->map_addr){
- int error;
- s->map_addr = 0;
- error = unset_vram_mapping(s->lfb_addr,
- s->lfb_end, s->vram_ptr);
- fprintf(stderr, "cirrus_stop_acc:unset_vram_mapping.\n");
- }
-}
-
-void cirrus_restart_acc(CirrusVGAState *s)
-{
- if (s->lfb_addr && s->lfb_end) {
- void *vram_pointer, *old_vram;
- fprintf(stderr, "cirrus_vga_load:re-enable vga acc.lfb_addr=0x%lx,
lfb_end=0x%lx.\n",
- s->lfb_addr, s->lfb_end);
- vram_pointer = set_vram_mapping(s->lfb_addr ,s->lfb_end);
- if (!vram_pointer){
- fprintf(stderr, "cirrus_vga_load:NULL vram_pointer\n");
- } else {
- old_vram = vga_update_vram((VGAState *)s, vram_pointer,
- VGA_RAM_SIZE);
- qemu_free(old_vram);
- s->map_addr = s->lfb_addr;
- s->map_end = s->lfb_end;
- }
- }
-}
-
/* load/save state */
static void cirrus_vga_save(QEMUFile *f, void *opaque)
@@ -3118,7 +3046,10 @@ static void cirrus_vga_save(QEMUFile *f,
qemu_put_8s(f, &vga_acc);
qemu_put_be64s(f, (uint64_t*)&s->lfb_addr);
qemu_put_be64s(f, (uint64_t*)&s->lfb_end);
- qemu_put_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
+ qemu_put_be64s(f, &s->stolen_vram_addr);
+ if (!s->stolen_vram_addr && !vga_acc)
+ /* Old guest: VRAM is not mapped, we have to save it ourselves */
+ qemu_put_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
}
static int cirrus_vga_load(QEMUFile *f, void *opaque, int version_id)
@@ -3127,7 +3058,7 @@ static int cirrus_vga_load(QEMUFile *f,
uint8_t vga_acc = 0;
int ret;
- if (version_id > 2)
+ if (version_id > 3)
return -EINVAL;
if (s->pci_dev && version_id >= 2) {
@@ -3173,9 +3104,20 @@ static int cirrus_vga_load(QEMUFile *f,
qemu_get_8s(f, &vga_acc);
qemu_get_be64s(f, (uint64_t*)&s->lfb_addr);
qemu_get_be64s(f, (uint64_t*)&s->lfb_end);
- qemu_get_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
- if (vga_acc){
- cirrus_restart_acc(s);
+ if (version_id >= 3) {
+ qemu_get_be64s(f, &s->stolen_vram_addr);
+ if (!s->stolen_vram_addr && !vga_acc) {
+ /* Old guest, VRAM is not mapped, we have to restore it ourselves
*/
+ qemu_get_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
+ xen_vga_populate_vram(s->lfb_addr);
+ } else
+ xen_vga_vram_map(vga_acc ? s->lfb_addr : s->stolen_vram_addr, 0);
+ } else {
+ /* Old image, we have to populate and restore VRAM ourselves */
+ xen_vga_populate_vram(s->lfb_addr);
+ qemu_get_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
+ if (vga_acc)
+ cirrus_restart_acc(s);
}
/* force refresh */
@@ -3297,7 +3239,7 @@ static void cirrus_init_common(CirrusVGA
s->cursor_invalidate = cirrus_cursor_invalidate;
s->cursor_draw_line = cirrus_cursor_draw_line;
- register_savevm("cirrus_vga", 0, 2, cirrus_vga_save, cirrus_vga_load, s);
+ register_savevm("cirrus_vga", 0, 3, cirrus_vga_save, cirrus_vga_load, s);
}
/***************************************
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/hw/vga.c
--- a/tools/ioemu/hw/vga.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/hw/vga.c Wed Aug 27 14:53:39 2008 +0100
@@ -23,6 +23,7 @@
*/
#include "vl.h"
#include "vga_int.h"
+#include <sys/mman.h>
//#define DEBUG_VGA
//#define DEBUG_VGA_MEM
@@ -1776,7 +1777,10 @@ static void vga_save(QEMUFile *f, void *
#endif
vram_size = s->vram_size;
qemu_put_be32s(f, &vram_size);
- qemu_put_buffer(f, s->vram_ptr, s->vram_size);
+ qemu_put_be64s(f, &s->stolen_vram_addr);
+ if (!s->stolen_vram_addr)
+ /* Old guest: VRAM is not mapped, we have to save it ourselves */
+ qemu_put_buffer(f, s->vram_ptr, VGA_RAM_SIZE);
}
static int vga_load(QEMUFile *f, void *opaque, int version_id)
@@ -1788,7 +1792,7 @@ static int vga_load(QEMUFile *f, void *o
int i;
#endif
- if (version_id > 3)
+ if (version_id > 4)
return -EINVAL;
if (s->pci_dev && version_id >= 2) {
@@ -1839,7 +1843,14 @@ static int vga_load(QEMUFile *f, void *o
qemu_get_be32s(f, &vram_size);
if (vram_size != s->vram_size)
return -EINVAL;
- qemu_get_buffer(f, s->vram_ptr, s->vram_size);
+ if (version_id >= 4) {
+ qemu_get_be64s(f, &s->stolen_vram_addr);
+ if (s->stolen_vram_addr)
+ xen_vga_vram_map(s->stolen_vram_addr, 0);
+ }
+ /* Old guest, VRAM is not mapped, we have to restore it ourselves */
+ if (!s->stolen_vram_addr)
+ qemu_get_buffer(f, s->vram_ptr, s->vram_size);
}
/* force refresh */
@@ -1994,6 +2005,100 @@ void vga_bios_init(VGAState *s)
/* TODO: add vbe support if enabled */
}
+
+static VGAState *xen_vga_state;
+
+/* When loading old images we have to populate the video ram ourselves */
+void xen_vga_populate_vram(uint64_t vram_addr)
+{
+ unsigned long nr_pfn;
+ struct xen_remove_from_physmap xrfp;
+ xen_pfn_t *pfn_list;
+ int i;
+ int rc;
+
+ fprintf(logfile, "populating video RAM at %lx\n", vram_addr);
+
+ nr_pfn = VGA_RAM_SIZE >> TARGET_PAGE_BITS;
+
+ pfn_list = malloc(sizeof(*pfn_list) * nr_pfn);
+
+ for (i = 0; i < nr_pfn; i++)
+ pfn_list[i] = (vram_addr >> TARGET_PAGE_BITS) + i;
+
+ if (xc_domain_memory_populate_physmap(xc_handle, domid, nr_pfn, 0, 0,
pfn_list)) {
+ fprintf(stderr, "Failed to populate video ram\n");
+ exit(1);
+ }
+ free(pfn_list);
+
+ xen_vga_vram_map(vram_addr, 0);
+
+ /* Unmap them from the guest for now. */
+ xrfp.domid = domid;
+ for (i = 0; i < nr_pfn; i++) {
+ xrfp.gpfn = (vram_addr >> TARGET_PAGE_BITS) + i;
+ rc = xc_memory_op(xc_handle, XENMEM_remove_from_physmap, &xrfp);
+ if (rc) {
+ fprintf(stderr, "remove_from_physmap PFN %"PRI_xen_pfn" failed:
%d\n", xrfp.gpfn, rc);
+ break;
+ }
+ }
+}
+
+/* Called once video memory has been allocated in the GPFN space */
+void xen_vga_vram_map(uint64_t vram_addr, int copy)
+{
+ unsigned long nr_pfn;
+ xen_pfn_t *pfn_list;
+ int i;
+ void *vram;
+
+ fprintf(logfile, "mapping video RAM from %lx\n", vram_addr);
+
+ nr_pfn = VGA_RAM_SIZE >> TARGET_PAGE_BITS;
+
+ pfn_list = malloc(sizeof(*pfn_list) * nr_pfn);
+
+ for (i = 0; i < nr_pfn; i++)
+ pfn_list[i] = (vram_addr >> TARGET_PAGE_BITS) + i;
+
+ vram = xc_map_foreign_pages(xc_handle, domid,
+ PROT_READ|PROT_WRITE,
+ pfn_list, nr_pfn);
+
+ if (!vram) {
+ fprintf(stderr, "Failed to map vram\n");
+ exit(1);
+ }
+
+ if (xc_domain_memory_translate_gpfn_list(xc_handle, domid, nr_pfn,
+ pfn_list, pfn_list)) {
+ fprintf(stderr, "Failed translation in xen_vga_vram_addr\n");
+ exit(1);
+ }
+
+ if (copy)
+ memcpy(vram, xen_vga_state->vram_ptr, VGA_RAM_SIZE);
+ qemu_free(xen_vga_state->vram_ptr);
+ xen_vga_state->vram_ptr = vram;
+ xen_vga_state->vram_mfns = pfn_list;
+#ifdef CONFIG_STUBDOM
+ xenfb_pv_display_start(vram);
+#endif
+}
+
+/* Called at boot time when the BIOS has allocated video RAM */
+void xen_vga_stolen_vram_addr(uint64_t stolen_vram_addr)
+{
+ fprintf(logfile, "stolen video RAM at %lx\n", stolen_vram_addr);
+
+ xen_vga_state->stolen_vram_addr = stolen_vram_addr;
+
+ /* And copy from the initialization value */
+ xen_vga_vram_map(stolen_vram_addr, 1);
+}
+
/* when used on xen environment, the vga_ram_base is not used */
void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
unsigned long vga_ram_offset, int vga_ram_size)
@@ -2025,13 +2130,9 @@ void vga_common_init(VGAState *s, Displa
vga_reset(s);
- /* Video RAM must be page-aligned for PVFB memory sharing */
- s->vram_ptr = s->vram_alloc = qemu_memalign(TARGET_PAGE_SIZE,
vga_ram_size);
-
-#ifdef CONFIG_STUBDOM
- if (!cirrus_vga_enabled)
- xenfb_pv_display_start(s->vram_ptr);
-#endif
+ s->vram_ptr = qemu_malloc(vga_ram_size);
+ s->vram_mfns = NULL;
+ xen_vga_state = s;
s->vram_offset = vga_ram_offset;
s->vram_size = vga_ram_size;
@@ -2051,7 +2152,7 @@ static void vga_init(VGAState *s)
{
int vga_io_memory;
- register_savevm("vga", 0, 3, vga_save, vga_load, s);
+ register_savevm("vga", 0, 4, vga_save, vga_load, s);
register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
@@ -2163,33 +2264,6 @@ int pci_vga_init(PCIBus *bus, DisplaySta
return 0;
}
-void *vga_update_vram(VGAState *s, void *vga_ram_base, int vga_ram_size)
-{
- uint8_t *old_pointer;
-
- if (s->vram_size != vga_ram_size) {
- fprintf(stderr, "No support to change vga_ram_size\n");
- return NULL;
- }
-
- if (!vga_ram_base) {
- vga_ram_base = qemu_memalign(TARGET_PAGE_SIZE, vga_ram_size +
TARGET_PAGE_SIZE + 1);
- if (!vga_ram_base) {
- fprintf(stderr, "reallocate error\n");
- return NULL;
- }
- }
-
- /* XXX lock needed? */
- old_pointer = s->vram_alloc;
- s->vram_alloc = vga_ram_base;
- vga_ram_base = (uint8_t *)((long)(vga_ram_base + 15) & ~15L);
- memcpy(vga_ram_base, s->vram_ptr, vga_ram_size);
- s->vram_ptr = vga_ram_base;
-
- return old_pointer;
-}
-
/********************************************************/
/* vga screen dump */
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/hw/vga_int.h
--- a/tools/ioemu/hw/vga_int.h Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/hw/vga_int.h Wed Aug 27 14:53:39 2008 +0100
@@ -80,9 +80,9 @@
#define VGA_MAX_HEIGHT 2048
#define VGA_STATE_COMMON \
- uint8_t *vram_alloc; \
uint8_t *vram_ptr; \
- uint8_t *vram_shadow; \
+ xen_pfn_t *vram_mfns; \
+ uint64_t stolen_vram_addr; /* Address of stolen RAM */ \
unsigned long vram_offset; \
unsigned int vram_size; \
unsigned long bios_offset; \
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/hw/xen_platform.c
--- a/tools/ioemu/hw/xen_platform.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/hw/xen_platform.c Wed Aug 27 14:53:39 2008 +0100
@@ -34,6 +34,7 @@ typedef struct PCIXenPlatformState
{
PCIDevice pci_dev;
uint8_t platform_flags;
+ uint64_t vga_stolen_ram;
} PCIXenPlatformState;
static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
@@ -69,11 +70,46 @@ static void xen_platform_ioport_writeb(v
}
+static uint32_t xen_platform_ioport_readl(void *opaque, uint32_t addr)
+{
+ PCIXenPlatformState *d = opaque;
+
+ addr &= 0xff;
+
+ switch (addr) {
+ case 4: /* VGA stolen memory address */
+ return d->vga_stolen_ram;
+ default:
+ return ~0u;
+ }
+}
+
+static void xen_platform_ioport_writel(void *opaque, uint32_t addr, uint32_t
val)
+{
+ PCIXenPlatformState *d = opaque;
+
+ addr &= 0xff;
+ val &= 0xffffffff;
+
+ switch (addr) {
+ case 4: /* VGA stolen memory address */
+ d->vga_stolen_ram = val;
+ xen_vga_stolen_vram_addr(val);
+ break;
+ default:
+ break;
+ }
+}
+
+
+
static void platform_ioport_map(PCIDevice *pci_dev, int region_num, uint32_t
addr, uint32_t size, int type)
{
PCIXenPlatformState *d = (PCIXenPlatformState *)pci_dev;
register_ioport_write(addr, size, 1, xen_platform_ioport_writeb, d);
+ register_ioport_write(addr, size, 4, xen_platform_ioport_writel, d);
register_ioport_read(addr, size, 1, xen_platform_ioport_readb, d);
+ register_ioport_read(addr, size, 4, xen_platform_ioport_readl, d);
}
static uint32_t platform_mmio_read(void *opaque, target_phys_addr_t addr)
@@ -155,6 +191,7 @@ void xen_pci_save(QEMUFile *f, void *opa
pci_device_save(&d->pci_dev, f);
qemu_put_8s(f, &d->platform_flags);
+ qemu_put_be64s(f, &d->vga_stolen_ram);
}
int xen_pci_load(QEMUFile *f, void *opaque, int version_id)
@@ -173,6 +210,7 @@ int xen_pci_load(QEMUFile *f, void *opaq
uint8_t flags;
qemu_get_8s(f, &flags);
xen_platform_ioport_writeb(d, 0, flags);
+ qemu_get_be64s(f, &d->vga_stolen_ram);
}
return 0;
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/vl.c
--- a/tools/ioemu/vl.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/vl.c Wed Aug 27 14:53:39 2008 +0100
@@ -7022,38 +7022,6 @@ static BOOL WINAPI qemu_ctrl_handler(DWO
#define MAX_NET_CLIENTS 32
#include <xg_private.h>
-
-/* FIXME Flush the shadow page */
-int unset_mm_mapping(int xc_handle, uint32_t domid,
- unsigned long nr_pages, unsigned int address_bits,
- xen_pfn_t *extent_start)
-{
- int err = 0;
-
- err = xc_domain_memory_decrease_reservation(xc_handle, domid,
- nr_pages, 0, extent_start);
- if (err)
- fprintf(stderr, "Failed to decrease physmap\n");
-
- return err;
-}
-
-int set_mm_mapping(int xc_handle, uint32_t domid,
- unsigned long nr_pages, unsigned int address_bits,
- xen_pfn_t *extent_start)
-{
- int err = 0;
-
- err = xc_domain_memory_populate_physmap(
- xc_handle, domid, nr_pages, 0,
- XENMEMF_address_bits(address_bits), extent_start);
- if (err) {
- fprintf(stderr, "Failed to populate physmap\n");
- return -1;
- }
-
- return 0;
-}
int main(int argc, char **argv)
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/ioemu/vl.h
--- a/tools/ioemu/vl.h Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/ioemu/vl.h Wed Aug 27 14:53:39 2008 +0100
@@ -1560,6 +1560,9 @@ void timeoffset_get(void);
/* xen_platform.c */
#ifndef QEMU_TOOL
void pci_xen_platform_init(PCIBus *bus);
+void xen_vga_stolen_vram_addr(uint64_t vram_addr);
+void xen_vga_populate_vram(uint64_t vram_addr);
+void xen_vga_vram_map(uint64_t vram_addr, int copy);
#endif
/* pci_emulation.c */
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/libxc/xc_domain.c Wed Aug 27 14:53:39 2008 +0100
@@ -531,6 +531,33 @@ int xc_domain_memory_populate_physmap(in
DPRINTF("Failed allocation for dom %d: %ld extents of order %d\n",
domid, nr_extents, extent_order);
errno = EBUSY;
+ err = -1;
+ }
+
+ return err;
+}
+
+int xc_domain_memory_translate_gpfn_list(int xc_handle,
+ uint32_t domid,
+ unsigned long nr_gpfns,
+ xen_pfn_t *gpfn_list,
+ xen_pfn_t *mfn_list)
+{
+ int err;
+ struct xen_translate_gpfn_list translate_gpfn_list = {
+ .domid = domid,
+ .nr_gpfns = nr_gpfns,
+ };
+ set_xen_guest_handle(translate_gpfn_list.gpfn_list, gpfn_list);
+ set_xen_guest_handle(translate_gpfn_list.mfn_list, mfn_list);
+
+ err = xc_memory_op(xc_handle, XENMEM_translate_gpfn_list,
&translate_gpfn_list);
+
+ if ( err != 0 )
+ {
+ DPRINTF("Failed translation for dom %d (%ld PFNs)\n",
+ domid, nr_gpfns);
+ errno = -err;
err = -1;
}
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/libxc/xc_domain_save.c
--- a/tools/libxc/xc_domain_save.c Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/libxc/xc_domain_save.c Wed Aug 27 14:53:39 2008 +0100
@@ -1109,12 +1109,6 @@ int xc_domain_save(int xc_handle, int io
if ( !((test_bit(n, to_send) && !test_bit(n, to_skip)) ||
(test_bit(n, to_send) && last_iter) ||
(test_bit(n, to_fix) && last_iter)) )
- continue;
-
- /* Skip PFNs that aren't really there */
- if ( hvm && ((n >= 0xa0 && n < 0xc0) /* VGA hole */
- || (n >= (HVM_BELOW_4G_MMIO_START >> PAGE_SHIFT)
- && n < (1ULL<<32) >> PAGE_SHIFT)) /* MMIO */ )
continue;
/*
diff -r 2397555ebcc2 -r dade7f0bdc8d tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Wed Aug 27 13:31:01 2008 +0100
+++ b/tools/libxc/xenctrl.h Wed Aug 27 14:53:39 2008 +0100
@@ -628,6 +628,12 @@ int xc_domain_memory_populate_physmap(in
unsigned int mem_flags,
xen_pfn_t *extent_start);
+int xc_domain_memory_translate_gpfn_list(int xc_handle,
+ uint32_t domid,
+ unsigned long nr_gpfns,
+ xen_pfn_t *gpfn_list,
+ xen_pfn_t *mfn_list);
+
int xc_domain_ioport_permission(int xc_handle,
uint32_t domid,
uint32_t first_port,
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/arch/ia64/xen/mm.c Wed Aug 27 14:53:39 2008 +0100
@@ -2698,6 +2698,20 @@ void put_page_type(struct page_info *pag
}
+static int get_page_from_pagenr(unsigned long page_nr, struct domain *d)
+{
+ struct page_info *page = mfn_to_page(page_nr);
+
+ if ( unlikely(!mfn_valid(page_nr)) || unlikely(!get_page(page, d)) )
+ {
+ MEM_LOG("Could not get page ref for pfn %lx", page_nr);
+ return 0;
+ }
+
+ return 1;
+}
+
+
int get_page_type(struct page_info *page, u32 type)
{
u64 nx, x, y = page->u.inuse.type_info;
@@ -2792,6 +2806,8 @@ long
long
arch_memory_op(int op, XEN_GUEST_HANDLE(void) arg)
{
+ struct page_info *page = NULL;
+
switch (op) {
case XENMEM_add_to_physmap:
{
@@ -2836,11 +2852,21 @@ arch_memory_op(int op, XEN_GUEST_HANDLE(
spin_unlock(&d->grant_table->lock);
break;
+ case XENMAPSPACE_mfn:
+ {
+ if ( get_page_from_pagenr(xatp.idx, d) ) {
+ mfn = xatp.idx;
+ page = mfn_to_page(mfn);
+ }
+ break;
+ }
default:
break;
}
if (mfn == 0) {
+ if ( page )
+ put_page(page);
rcu_unlock_domain(d);
return -EINVAL;
}
@@ -2872,11 +2898,53 @@ arch_memory_op(int op, XEN_GUEST_HANDLE(
out:
domain_unlock(d);
-
+
+ if ( page )
+ put_page(page);
+
rcu_unlock_domain(d);
break;
}
+
+ case XENMEM_remove_from_physmap:
+ {
+ struct xen_remove_from_physmap xrfp;
+ unsigned long mfn;
+ struct domain *d;
+
+ if ( copy_from_guest(&xrfp, arg, 1) )
+ return -EFAULT;
+
+ if ( xrfp.domid == DOMID_SELF )
+ {
+ d = rcu_lock_current_domain();
+ }
+ else
+ {
+ if ( (d = rcu_lock_domain_by_id(xrfp.domid)) == NULL )
+ return -ESRCH;
+ if ( !IS_PRIV_FOR(current->domain, d) )
+ {
+ rcu_unlock_domain(d);
+ return -EPERM;
+ }
+ }
+
+ domain_lock(d);
+
+ mfn = gmfn_to_mfn(d, xrfp.gpfn);
+
+ if ( mfn_valid(mfn) )
+ guest_physmap_remove_page(d, xrfp.gpfn, mfn, 0);
+
+ domain_unlock(d);
+
+ rcu_unlock_domain(d);
+
+ break;
+ }
+
case XENMEM_machine_memory_map:
{
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/arch/x86/mm.c Wed Aug 27 14:53:39 2008 +0100
@@ -3339,6 +3339,7 @@ DEFINE_XEN_GUEST_HANDLE(e820entry_t);
long arch_memory_op(int op, XEN_GUEST_HANDLE(void) arg)
{
+ struct page_info *page = NULL;
switch ( op )
{
case XENMEM_add_to_physmap:
@@ -3389,12 +3390,22 @@ long arch_memory_op(int op, XEN_GUEST_HA
spin_unlock(&d->grant_table->lock);
break;
+ case XENMAPSPACE_mfn:
+ {
+ if ( get_page_from_pagenr(xatp.idx, d) ) {
+ mfn = xatp.idx;
+ page = mfn_to_page(mfn);
+ }
+ break;
+ }
default:
break;
}
if ( !paging_mode_translate(d) || (mfn == 0) )
{
+ if ( page )
+ put_page(page);
rcu_unlock_domain(d);
return -EINVAL;
}
@@ -3420,6 +3431,53 @@ long arch_memory_op(int op, XEN_GUEST_HA
/* Map at new location. */
guest_physmap_add_page(d, xatp.gpfn, mfn, 0);
+
+ domain_unlock(d);
+
+ if ( page )
+ put_page(page);
+
+ rcu_unlock_domain(d);
+
+ break;
+ }
+
+ case XENMEM_remove_from_physmap:
+ {
+ struct xen_remove_from_physmap xrfp;
+ unsigned long mfn;
+ struct domain *d;
+
+ if ( copy_from_guest(&xrfp, arg, 1) )
+ return -EFAULT;
+
+ if ( xrfp.domid == DOMID_SELF )
+ {
+ d = rcu_lock_current_domain();
+ }
+ else
+ {
+ if ( (d = rcu_lock_domain_by_id(xrfp.domid)) == NULL )
+ return -ESRCH;
+ if ( !IS_PRIV_FOR(current->domain, d) )
+ {
+ rcu_unlock_domain(d);
+ return -EPERM;
+ }
+ }
+
+ if ( xsm_remove_from_physmap(current->domain, d) )
+ {
+ rcu_unlock_domain(d);
+ return -EPERM;
+ }
+
+ domain_lock(d);
+
+ mfn = gmfn_to_mfn(d, xrfp.gpfn);
+
+ if ( mfn_valid(mfn) )
+ guest_physmap_remove_page(d, xrfp.gpfn, mfn, 0);
domain_unlock(d);
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/arch/x86/x86_64/compat/mm.c
--- a/xen/arch/x86/x86_64/compat/mm.c Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/arch/x86/x86_64/compat/mm.c Wed Aug 27 14:53:39 2008 +0100
@@ -64,6 +64,20 @@ int compat_arch_memory_op(int op, XEN_GU
return -EFAULT;
XLAT_add_to_physmap(nat, &cmp);
+ rc = arch_memory_op(op, guest_handle_from_ptr(nat, void));
+
+ break;
+ }
+
+ case XENMEM_remove_from_physmap:
+ {
+ struct compat_remove_from_physmap cmp;
+ struct xen_remove_from_physmap *nat = (void
*)COMPAT_ARG_XLAT_VIRT_BASE;
+
+ if ( copy_from_guest(&cmp, arg, 1) )
+ return -EFAULT;
+
+ XLAT_remove_from_physmap(nat, &cmp);
rc = arch_memory_op(op, guest_handle_from_ptr(nat, void));
break;
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/include/public/memory.h
--- a/xen/include/public/memory.h Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/include/public/memory.h Wed Aug 27 14:53:39 2008 +0100
@@ -204,6 +204,7 @@ struct xen_add_to_physmap {
/* Source mapping space. */
#define XENMAPSPACE_shared_info 0 /* shared info page */
#define XENMAPSPACE_grant_table 1 /* grant table page */
+#define XENMAPSPACE_mfn 2 /* usual MFN */
unsigned int space;
/* Index into source mapping space. */
@@ -214,6 +215,22 @@ struct xen_add_to_physmap {
};
typedef struct xen_add_to_physmap xen_add_to_physmap_t;
DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_t);
+
+/*
+ * Unmaps the page appearing at a particular GPFN from the specified guest's
+ * pseudophysical address space.
+ * arg == addr of xen_remove_from_physmap_t.
+ */
+#define XENMEM_remove_from_physmap 15
+struct xen_remove_from_physmap {
+ /* Which domain to change the mapping for. */
+ domid_t domid;
+
+ /* GPFN of the current mapping of the page. */
+ xen_pfn_t gpfn;
+};
+typedef struct xen_remove_from_physmap xen_remove_from_physmap_t;
+DEFINE_XEN_GUEST_HANDLE(xen_remove_from_physmap_t);
/*
* Translates a list of domain-specific GPFNs into MFNs. Returns a -ve error
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/include/xlat.lst
--- a/xen/include/xlat.lst Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/include/xlat.lst Wed Aug 27 14:53:39 2008 +0100
@@ -33,6 +33,7 @@
! kexec_image kexec.h
! kexec_range kexec.h
! add_to_physmap memory.h
+! remove_from_physmap memory.h
! foreign_memory_map memory.h
! memory_exchange memory.h
! memory_map memory.h
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/include/xsm/xsm.h
--- a/xen/include/xsm/xsm.h Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/include/xsm/xsm.h Wed Aug 27 14:53:39 2008 +0100
@@ -136,6 +136,7 @@ struct xsm_operations {
int (*mmu_machphys_update) (struct domain *d, unsigned long mfn);
int (*update_va_mapping) (struct domain *d, l1_pgentry_t pte);
int (*add_to_physmap) (struct domain *d1, struct domain *d2);
+ int (*remove_from_physmap) (struct domain *d1, struct domain *d2);
#endif
};
@@ -532,6 +533,11 @@ static inline int xsm_add_to_physmap(str
{
return xsm_call(add_to_physmap(d1, d2));
}
+
+static inline int xsm_remove_from_physmap(struct domain *d1, struct domain *d2)
+{
+ return xsm_call(remove_from_physmap(d1, d2));
+}
#endif /* CONFIG_X86 */
#endif /* __XSM_H */
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/xsm/dummy.c
--- a/xen/xsm/dummy.c Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/xsm/dummy.c Wed Aug 27 14:53:39 2008 +0100
@@ -382,6 +382,11 @@ static int dummy_update_va_mapping (stru
}
static int dummy_add_to_physmap (struct domain *d1, struct domain *d2)
+{
+ return 0;
+}
+
+static int dummy_remove_from_physmap (struct domain *d1, struct domain *d2)
{
return 0;
}
@@ -484,5 +489,6 @@ void xsm_fixup_ops (struct xsm_operation
set_to_dummy_if_null(ops, mmu_machphys_update);
set_to_dummy_if_null(ops, update_va_mapping);
set_to_dummy_if_null(ops, add_to_physmap);
+ set_to_dummy_if_null(ops, remove_from_physmap);
#endif
}
diff -r 2397555ebcc2 -r dade7f0bdc8d xen/xsm/flask/hooks.c
--- a/xen/xsm/flask/hooks.c Wed Aug 27 13:31:01 2008 +0100
+++ b/xen/xsm/flask/hooks.c Wed Aug 27 14:53:39 2008 +0100
@@ -1025,6 +1025,11 @@ static int flask_update_va_mapping(struc
}
static int flask_add_to_physmap(struct domain *d1, struct domain *d2)
+{
+ return domain_has_perm(d1, d2, SECCLASS_MMU, MMU__PHYSMAP);
+}
+
+static int flask_remove_from_physmap(struct domain *d1, struct domain *d2)
{
return domain_has_perm(d1, d2, SECCLASS_MMU, MMU__PHYSMAP);
}
@@ -1115,6 +1120,7 @@ static struct xsm_operations flask_ops =
.mmu_machphys_update = flask_mmu_machphys_update,
.update_va_mapping = flask_update_va_mapping,
.add_to_physmap = flask_add_to_physmap,
+ .remove_from_physmap = flask_remove_from_physmap,
#endif
};
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