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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] New initial memory interface for HVM on ia64
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 357a3c90d67bad40b0bd511eea117db250486c5d
# Parent bcd2960d6dfd018de58fc0113c37d30edbe802c5
[IA64] New initial memory interface for HVM on ia64
Use xc_domain_memory_populate_physmap() to allocate memory and
build P2M/M2P table in setup_guest(). vmx_build_physmap_table()
is only used to mark IO space now.
Signed-off-by: Zhang Xin <xing.z.zhang@xxxxxxxxx>
---
tools/libxc/ia64/xc_ia64_hvm_build.c | 111 +++++++++++++++++++++++++++--------
xen/arch/ia64/vmx/vmx_init.c | 68 +--------------------
2 files changed, 94 insertions(+), 85 deletions(-)
diff -r bcd2960d6dfd -r 357a3c90d67b tools/libxc/ia64/xc_ia64_hvm_build.c
--- a/tools/libxc/ia64/xc_ia64_hvm_build.c Mon Nov 20 21:10:59 2006 -0700
+++ b/tools/libxc/ia64/xc_ia64_hvm_build.c Wed Nov 22 09:30:27 2006 -0700
@@ -546,19 +546,32 @@ add_pal_hob(void* hob_buf)
return 0;
}
+#define GFW_PAGES (GFW_SIZE >> PAGE_SHIFT)
+#define VGA_START_PAGE (VGA_IO_START >> PAGE_SHIFT)
+#define VGA_END_PAGE ((VGA_IO_START + VGA_IO_SIZE) >> PAGE_SHIFT)
+/*
+ * In this function, we will allocate memory and build P2M/M2P table for VTI
+ * guest. Frist, a pfn list will be initialized discontiguous, normal memory
+ * begins with 0, GFW memory and other three pages at their place defined in
+ * xen/include/public/arch-ia64.h xc_domain_memory_populate_physmap() called
+ * three times, to set parameter 'extent_order' to different value, this is
+ * convenient to allocate discontiguous memory with different size.
+ */
static int
setup_guest(int xc_handle, uint32_t dom, unsigned long memsize,
char *image, unsigned long image_size, uint32_t vcpus,
unsigned int store_evtchn, unsigned long *store_mfn)
{
- unsigned long page_array[3];
+ xen_pfn_t *pfn_list;
shared_iopage_t *sp;
void *ioreq_buffer_page;
- // memsize = required memsize(in configure file) + 16M
+ // memsize equal to normal memory size(in configure file) + 16M
// dom_memsize will pass to xc_ia64_build_hob(), so must be subbed 16M
unsigned long dom_memsize = ((memsize - 16) << 20);
unsigned long nr_pages = (unsigned long)memsize << (20 - PAGE_SHIFT);
+ unsigned long normal_pages = nr_pages - GFW_PAGES;
int rc;
+ long i, j;
DECLARE_DOMCTL;
// ROM size for guest firmware, ioreq page and xenstore page
@@ -569,14 +582,63 @@ setup_guest(int xc_handle, uint32_t dom,
return -1;
}
- rc = xc_domain_memory_increase_reservation(xc_handle, dom, nr_pages,
- 0, 0, NULL);
+ pfn_list = malloc(nr_pages * sizeof(xen_pfn_t));
+ if (pfn_list == NULL) {
+ PERROR("Could not allocate memory.\n");
+ return -1;
+ }
+
+ // Allocate pfn for normal memory
+ for (i = 0; i < dom_memsize >> PAGE_SHIFT; i++)
+ pfn_list[i] = i;
+
+ // If normal memory > 3G. Reserve 3G ~ 4G for MMIO, GFW and others.
+ for (j = (MMIO_START >> PAGE_SHIFT); j < (dom_memsize >> PAGE_SHIFT); j++)
+ pfn_list[j] += ((1 * MEM_G) >> PAGE_SHIFT);
+
+ // Allocate memory for VTI guest, up to VGA hole from 0xA0000-0xC0000.
+ rc = xc_domain_memory_populate_physmap(xc_handle, dom,
+ (normal_pages > VGA_START_PAGE) ?
+ VGA_START_PAGE : normal_pages,
+ 0, 0, &pfn_list[0]);
+
+ // We're not likely to attempt to create a domain with less than
+ // 640k of memory, but test for completeness
+ if (rc == 0 && nr_pages > VGA_END_PAGE)
+ rc = xc_domain_memory_populate_physmap(xc_handle, dom,
+ normal_pages - VGA_END_PAGE,
+ 0, 0, &pfn_list[VGA_END_PAGE]);
if (rc != 0) {
- PERROR("Could not allocate memory for HVM guest.\n");
- goto error_out;
- }
-
- /* This will creates the physmap. */
+ PERROR("Could not allocate normal memory for Vti guest.\n");
+ goto error_out;
+ }
+
+ // We allocate additional pfn for GFW and other three pages, so
+ // the pfn_list is not contiguous. Due to this we must support
+ // old interface xc_ia64_get_pfn_list().
+ // Here i = (dom_memsize >> PAGE_SHIFT)
+ for (j = 0; i < nr_pages - 3; i++, j++)
+ pfn_list[i] = (GFW_START >> PAGE_SHIFT) + j;
+
+ rc = xc_domain_memory_populate_physmap(xc_handle, dom, GFW_PAGES,
+ 0, 0, &pfn_list[normal_pages]);
+ if (rc != 0) {
+ PERROR("Could not allocate GFW memory for Vti guest.\n");
+ goto error_out;
+ }
+
+ // Here i = (dom_memsize >> PAGE_SHIFT) + GFW_PAGES
+ pfn_list[i] = IO_PAGE_START >> PAGE_SHIFT;
+ pfn_list[i+1] = STORE_PAGE_START >> PAGE_SHIFT;
+ pfn_list[i+2] = BUFFER_IO_PAGE_START >> PAGE_SHIFT;
+
+ rc = xc_domain_memory_populate_physmap(xc_handle, dom, 3,
+ 0, 0, &pfn_list[nr_pages - 3]);
+ if (rc != 0) {
+ PERROR("Could not allocate GFW memory for Vti guest.\n");
+ goto error_out;
+ }
+
domctl.u.arch_setup.flags = XEN_DOMAINSETUP_hvm_guest;
domctl.u.arch_setup.bp = 0;
domctl.u.arch_setup.maxmem = 0;
@@ -585,7 +647,13 @@ setup_guest(int xc_handle, uint32_t dom,
if (xc_domctl(xc_handle, &domctl))
goto error_out;
- /* Load guest firmware */
+ if (xc_domain_translate_gpfn_list(xc_handle, dom, nr_pages,
+ pfn_list, pfn_list)) {
+ PERROR("Could not translate addresses of HVM guest.\n");
+ goto error_out;
+ }
+
+ // Load guest firmware
if (xc_ia64_copy_to_domain_pages(xc_handle, dom, image,
(GFW_START + GFW_SIZE - image_size) >> PAGE_SHIFT,
image_size >> PAGE_SHIFT)) {
@@ -593,36 +661,33 @@ setup_guest(int xc_handle, uint32_t dom,
goto error_out;
}
- /* Hand-off state passed to guest firmware */
+ // Hand-off state passed to guest firmware
if (xc_ia64_build_hob(xc_handle, dom, dom_memsize,
(unsigned long)vcpus) < 0) {
PERROR("Could not build hob\n");
goto error_out;
}
- /* Retrieve special pages like io, xenstore, etc. */
- if (xc_ia64_get_pfn_list(xc_handle, dom, page_array,
- IO_PAGE_START>>PAGE_SHIFT, 3) != 3) {
- PERROR("Could not get the page frame list");
- goto error_out;
- }
-
xc_set_hvm_param(xc_handle, dom,
HVM_PARAM_STORE_PFN, STORE_PAGE_START>>PAGE_SHIFT);
xc_set_hvm_param(xc_handle, dom, HVM_PARAM_STORE_EVTCHN, store_evtchn);
- *store_mfn = page_array[1];
- sp = (shared_iopage_t *)xc_map_foreign_range(xc_handle, dom,
- PAGE_SIZE, PROT_READ|PROT_WRITE, page_array[0]);
+ // Retrieve special pages like io, xenstore, etc.
+ *store_mfn = pfn_list[nr_pages - 2];
+ sp = (shared_iopage_t *)xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ | PROT_WRITE,
+ pfn_list[nr_pages - 3]);
if (sp == 0)
goto error_out;
memset(sp, 0, PAGE_SIZE);
munmap(sp, PAGE_SIZE);
- ioreq_buffer_page = xc_map_foreign_range(xc_handle, dom,
- PAGE_SIZE, PROT_READ|PROT_WRITE,
page_array[2]);
+ ioreq_buffer_page = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ | PROT_WRITE,
+ pfn_list[nr_pages - 1]);
memset(ioreq_buffer_page,0,PAGE_SIZE);
munmap(ioreq_buffer_page, PAGE_SIZE);
+ free(pfn_list);
return 0;
error_out:
diff -r bcd2960d6dfd -r 357a3c90d67b xen/arch/ia64/vmx/vmx_init.c
--- a/xen/arch/ia64/vmx/vmx_init.c Mon Nov 20 21:10:59 2006 -0700
+++ b/xen/arch/ia64/vmx/vmx_init.c Wed Nov 22 09:30:27 2006 -0700
@@ -359,17 +359,11 @@ static const io_range_t io_ranges[] = {
{PIB_START, PIB_SIZE, GPFN_PIB},
};
-/* Reseve 1 page for shared I/O ,1 page for xenstore and 1 page for buffer
I/O. */
-#define VMX_SYS_PAGES (3 + (GFW_SIZE >> PAGE_SHIFT))
-/* If we support maxmem for domVTi, we should change from tot_page to
max_pages.
- * #define VMX_CONFIG_PAGES(d) ((d)->max_pages - VMX_SYS_PAGES)
- */
-#define VMX_CONFIG_PAGES(d) ((d)->tot_pages - VMX_SYS_PAGES)
-
-static void vmx_build_physmap_table(struct domain *d)
-{
- unsigned long i, j, start, tmp, end, mfn;
- struct list_head *list_ent = d->page_list.next;
+// The P2M table is built in libxc/ia64/xc_ia64_hvm_build.c @ setup_guest()
+// so only mark IO memory space here
+static void vmx_build_io_physmap_table(struct domain *d)
+{
+ unsigned long i, j;
/* Mark I/O ranges */
for (i = 0; i < (sizeof(io_ranges) / sizeof(io_range_t)); i++) {
@@ -379,63 +373,13 @@ static void vmx_build_physmap_table(stru
ASSIGN_writable);
}
- /* Map normal memory below 3G */
- end = VMX_CONFIG_PAGES(d) << PAGE_SHIFT;
- tmp = end < MMIO_START ? end : MMIO_START;
- for (i = 0; (i < tmp) && (list_ent != &d->page_list); i += PAGE_SIZE) {
- mfn = page_to_mfn(list_entry(list_ent, struct page_info, list));
- list_ent = mfn_to_page(mfn)->list.next;
- if (VGA_IO_START <= i && i < VGA_IO_START + VGA_IO_SIZE)
- continue;
- assign_domain_page(d, i, mfn << PAGE_SHIFT);
- }
- ASSERT(list_ent != &d->page_list);
-
- /* Map normal memory beyond 4G */
- if (unlikely(end > MMIO_START)) {
- start = 4 * MEM_G;
- end = start + (end - 3 * MEM_G);
- for (i = start;
- (i < end) && (list_ent != &d->page_list); i += PAGE_SIZE) {
- mfn = page_to_mfn(list_entry(list_ent,
- struct page_info, list));
- assign_domain_page(d, i, mfn << PAGE_SHIFT);
- list_ent = mfn_to_page(mfn)->list.next;
- }
- ASSERT(list_ent != &d->page_list);
- }
-
- /* Map guest firmware */
- for (i = GFW_START; (i < GFW_START + GFW_SIZE) &&
- (list_ent != &d->page_list); i += PAGE_SIZE) {
- mfn = page_to_mfn(list_entry(list_ent, struct page_info, list));
- assign_domain_page(d, i, mfn << PAGE_SHIFT);
- list_ent = mfn_to_page(mfn)->list.next;
- }
- ASSERT(list_ent != &d->page_list);
-
- /* Map for shared I/O page and xenstore */
- mfn = page_to_mfn(list_entry(list_ent, struct page_info, list));
- assign_domain_page(d, IO_PAGE_START, mfn << PAGE_SHIFT);
- list_ent = mfn_to_page(mfn)->list.next;
- ASSERT(list_ent != &d->page_list);
-
- mfn = page_to_mfn(list_entry(list_ent, struct page_info, list));
- assign_domain_page(d, STORE_PAGE_START, mfn << PAGE_SHIFT);
- list_ent = mfn_to_page(mfn)->list.next;
- ASSERT(list_ent != &d->page_list);
-
- mfn = page_to_mfn(list_entry(list_ent, struct page_info, list));
- assign_domain_page(d, BUFFER_IO_PAGE_START, mfn << PAGE_SHIFT);
- list_ent = mfn_to_page(mfn)->list.next;
- ASSERT(list_ent == &d->page_list);
}
void vmx_setup_platform(struct domain *d)
{
ASSERT(d != dom0); /* only for non-privileged vti domain */
- vmx_build_physmap_table(d);
+ vmx_build_io_physmap_table(d);
d->arch.vmx_platform.shared_page_va =
(unsigned long)__va(__gpa_to_mpa(d, IO_PAGE_START));
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