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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [TOOLS] Paravirt guests have their memory allocated in the
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID e6fdb32b786c3e57b9c641274607603897b97334
# Parent 70687bcb82dd0b2d5813e6125c95ff908e25c94d
[TOOLS] Paravirt guests have their memory allocated in the
libxenguest builder function.
Again, PPC and IA64 will need to do some fixing up.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
tools/libxc/xc_linux_build.c | 96 ++++++++++----------------------
tools/libxc/xenguest.h | 32 ++++++----
tools/python/xen/lowlevel/xc/xc.c | 9 +--
tools/python/xen/xend/XendDomainInfo.py | 11 ---
tools/python/xen/xend/image.py | 24 +++++---
5 files changed, 72 insertions(+), 100 deletions(-)
diff -r 70687bcb82dd -r e6fdb32b786c tools/libxc/xc_linux_build.c
--- a/tools/libxc/xc_linux_build.c Thu Nov 02 07:46:06 2006 +0000
+++ b/tools/libxc/xc_linux_build.c Thu Nov 02 11:11:28 2006 +0000
@@ -23,12 +23,6 @@
#elif defined(__x86_64__)
#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
-
-#ifdef __ia64__
-#define get_tot_pages xc_get_max_pages
-#else
-#define get_tot_pages xc_get_tot_pages
#endif
#define round_pgup(_p) (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
@@ -674,7 +668,6 @@ static int setup_guest(int xc_handle,
int hypercall_page_defined;
start_info_t *start_info;
shared_info_t *shared_info;
- xc_mmu_t *mmu = NULL;
const char *p;
DECLARE_DOMCTL;
int rc;
@@ -716,7 +709,7 @@ static int setup_guest(int xc_handle,
goto error_out;
}
- if (!compat_check(xc_handle, &dsi))
+ if ( !compat_check(xc_handle, &dsi) )
goto error_out;
/* Parse and validate kernel features. */
@@ -751,9 +744,13 @@ static int setup_guest(int xc_handle,
goto error_out;
}
- if ( xc_get_pfn_list(xc_handle, dom, page_array, nr_pages) != nr_pages )
- {
- PERROR("Could not get the page frame list");
+ for ( i = 0; i < nr_pages; i++ )
+ page_array[i] = i;
+
+ if ( xc_domain_memory_populate_physmap(xc_handle, dom, nr_pages,
+ 0, 0, page_array) )
+ {
+ PERROR("Could not allocate memory for PV guest.\n");
goto error_out;
}
@@ -885,9 +882,8 @@ static int setup_guest(int xc_handle,
goto error_out;
}
- /* setup page tables */
#if defined(__i386__)
- if (dsi.pae_kernel != PAEKERN_no)
+ if ( dsi.pae_kernel != PAEKERN_no )
rc = setup_pg_tables_pae(xc_handle, dom, ctxt,
dsi.v_start, v_end,
page_array, vpt_start, vpt_end,
@@ -904,16 +900,16 @@ static int setup_guest(int xc_handle,
page_array, vpt_start, vpt_end,
shadow_mode_enabled);
#endif
- if (0 != rc)
- goto error_out;
-
-#if defined(__i386__)
+ if ( rc != 0 )
+ goto error_out;
+
/*
* Pin down l2tab addr as page dir page - causes hypervisor to provide
* correct protection for the page
*/
if ( !shadow_mode_enabled )
{
+#if defined(__i386__)
if ( dsi.pae_kernel != PAEKERN_no )
{
if ( pin_table(xc_handle, MMUEXT_PIN_L3_TABLE,
@@ -926,40 +922,24 @@ static int setup_guest(int xc_handle,
xen_cr3_to_pfn(ctxt->ctrlreg[3]), dom) )
goto error_out;
}
- }
+#elif 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,
+ xen_cr3_to_pfn(ctxt->ctrlreg[3]), 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,
- xen_cr3_to_pfn(ctxt->ctrlreg[3]), dom) )
- goto error_out;
-#endif
-
- if ( (mmu = xc_init_mmu_updates(xc_handle, dom)) == NULL )
- goto error_out;
-
- /* Write the phys->machine and machine->phys table entries. */
+ }
+
+ /* Write the phys->machine table entries (machine->phys already done). */
physmap_pfn = (vphysmap_start - dsi.v_start) >> PAGE_SHIFT;
physmap = physmap_e = xc_map_foreign_range(
xc_handle, dom, PAGE_SIZE, PROT_READ|PROT_WRITE,
page_array[physmap_pfn++]);
-
for ( count = 0; count < nr_pages; count++ )
{
- if ( xc_add_mmu_update(
- xc_handle, mmu,
- ((uint64_t)page_array[count] << PAGE_SHIFT) | MMU_MACHPHYS_UPDATE,
- count) )
- {
- DPRINTF("m2p update failure p=%lx m=%"PRIx64"\n",
- count, (uint64_t)page_array[count]);
- munmap(physmap, PAGE_SIZE);
- goto error_out;
- }
*physmap_e++ = page_array[count];
if ( ((unsigned long)physmap_e & (PAGE_SIZE-1)) == 0 )
{
@@ -970,10 +950,6 @@ static int setup_guest(int xc_handle,
}
}
munmap(physmap, PAGE_SIZE);
-
- /* Send the page update requests down to the hypervisor. */
- if ( xc_finish_mmu_updates(xc_handle, mmu) )
- goto error_out;
if ( shadow_mode_enabled )
{
@@ -1081,10 +1057,6 @@ static int setup_guest(int xc_handle,
munmap(shared_info, PAGE_SIZE);
- /* Send the page update requests down to the hypervisor. */
- if ( xc_finish_mmu_updates(xc_handle, mmu) )
- goto error_out;
-
hypercall_page = xen_elfnote_numeric(&dsi, XEN_ELFNOTE_HYPERCALL_PAGE,
&hypercall_page_defined);
if ( hypercall_page_defined )
@@ -1100,7 +1072,6 @@ static int setup_guest(int xc_handle,
goto error_out;
}
- free(mmu);
free(page_array);
*pvsi = vstartinfo_start;
@@ -1110,7 +1081,6 @@ static int setup_guest(int xc_handle,
return 0;
error_out:
- free(mmu);
free(page_array);
return -1;
}
@@ -1118,6 +1088,7 @@ static int setup_guest(int xc_handle,
static int xc_linux_build_internal(int xc_handle,
uint32_t domid,
+ unsigned int mem_mb,
char *image,
unsigned long image_size,
struct initrd_info *initrd,
@@ -1132,8 +1103,7 @@ static int xc_linux_build_internal(int x
struct xen_domctl launch_domctl;
DECLARE_DOMCTL;
int rc, i;
- vcpu_guest_context_t st_ctxt, *ctxt = &st_ctxt;
- unsigned long nr_pages;
+ struct vcpu_guest_context st_ctxt, *ctxt = &st_ctxt;
unsigned long vstartinfo_start, vkern_entry, vstack_start;
uint32_t features_bitmap[XENFEAT_NR_SUBMAPS] = { 0, };
@@ -1144,12 +1114,6 @@ static int xc_linux_build_internal(int x
PERROR("Failed to parse configured features\n");
goto error_out;
}
- }
-
- if ( (nr_pages = get_tot_pages(xc_handle, domid)) < 0 )
- {
- PERROR("Could not find total pages for domain");
- goto error_out;
}
#ifdef VALGRIND
@@ -1175,7 +1139,7 @@ static int xc_linux_build_internal(int x
if ( setup_guest(xc_handle, domid, image, image_size,
initrd,
- nr_pages,
+ mem_mb << (20 - PAGE_SHIFT),
&vstartinfo_start, &vkern_entry,
&vstack_start, ctxt, cmdline,
domctl.u.getdomaininfo.shared_info_frame,
@@ -1271,6 +1235,7 @@ static int xc_linux_build_internal(int x
int xc_linux_build_mem(int xc_handle,
uint32_t domid,
+ unsigned int mem_mb,
const char *image_buffer,
unsigned long image_size,
const char *initrd,
@@ -1319,7 +1284,7 @@ int xc_linux_build_mem(int xc_handle,
}
}
- sts = xc_linux_build_internal(xc_handle, domid, img_buf, img_len,
+ sts = xc_linux_build_internal(xc_handle, domid, mem_mb, img_buf, img_len,
&initrd_info, cmdline, features, flags,
store_evtchn, store_mfn,
console_evtchn, console_mfn);
@@ -1339,6 +1304,7 @@ int xc_linux_build_mem(int xc_handle,
int xc_linux_build(int xc_handle,
uint32_t domid,
+ unsigned int mem_mb,
const char *image_name,
const char *initrd_name,
const char *cmdline,
@@ -1375,7 +1341,7 @@ int xc_linux_build(int xc_handle,
}
}
- sts = xc_linux_build_internal(xc_handle, domid, image, image_size,
+ sts = xc_linux_build_internal(xc_handle, domid, mem_mb, image, image_size,
&initrd_info, cmdline, features, flags,
store_evtchn, store_mfn,
console_evtchn, console_mfn);
diff -r 70687bcb82dd -r e6fdb32b786c tools/libxc/xenguest.h
--- a/tools/libxc/xenguest.h Thu Nov 02 07:46:06 2006 +0000
+++ b/tools/libxc/xenguest.h Thu Nov 02 11:11:28 2006 +0000
@@ -48,8 +48,9 @@ int xc_linux_restore(int xc_handle, int
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm domid the id of the domain
- * @param image_name name of the kernel image file
- * @param ramdisk_name name of the ramdisk image file
+ * @parm mem_mb memory size in megabytes
+ * @parm image_name name of the kernel image file
+ * @parm ramdisk_name name of the ramdisk image file
* @parm cmdline command line string
* @parm flags domain creation flags
* @parm store_evtchn the store event channel for this domain to use
@@ -60,6 +61,7 @@ int xc_linux_restore(int xc_handle, int
*/
int xc_linux_build(int xc_handle,
uint32_t domid,
+ unsigned int mem_mb,
const char *image_name,
const char *ramdisk_name,
const char *cmdline,
@@ -74,22 +76,24 @@ int xc_linux_build(int xc_handle,
* This function will create a domain for a paravirtualized Linux
* using buffers for kernel and initrd
*
- * @param xc_handle a handle to an open hypervisor interface
- * @param domid the id of the domain
- * @param image_buffer buffer containing kernel image
- * @param image_size size of the kernel image buffer
- * @param initrd_buffer name of the ramdisk image file
- * @param initrd_size size of the ramdisk buffer
- * @param cmdline command line string
- * @param flags domain creation flags
- * @param store_evtchn the store event channel for this domain to use
- * @param store_mfn returned with the mfn of the store page
- * @param console_evtchn the console event channel for this domain to use
- * @param conole_mfn returned with the mfn of the console page
+ * @parm xc_handle a handle to an open hypervisor interface
+ * @parm domid the id of the domain
+ * @parm mem_mb memory size in megabytes
+ * @parm image_buffer buffer containing kernel image
+ * @parm image_size size of the kernel image buffer
+ * @parm initrd_buffer name of the ramdisk image file
+ * @parm initrd_size size of the ramdisk buffer
+ * @parm cmdline command line string
+ * @parm flags domain creation flags
+ * @parm store_evtchn the store event channel for this domain to use
+ * @parm store_mfn returned with the mfn of the store page
+ * @parm console_evtchn the console event channel for this domain to use
+ * @parm conole_mfn returned with the mfn of the console page
* @return 0 on success, -1 on failure
*/
int xc_linux_build_mem(int xc_handle,
uint32_t domid,
+ unsigned int mem_mb,
const char *image_buffer,
unsigned long image_size,
const char *initrd_buffer,
diff -r 70687bcb82dd -r e6fdb32b786c tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Thu Nov 02 07:46:06 2006 +0000
+++ b/tools/python/xen/lowlevel/xc/xc.c Thu Nov 02 11:11:28 2006 +0000
@@ -334,24 +334,25 @@ static PyObject *pyxc_linux_build(XcObje
char *image, *ramdisk = NULL, *cmdline = "", *features = NULL;
int flags = 0;
int store_evtchn, console_evtchn;
+ unsigned int mem_mb;
unsigned long store_mfn = 0;
unsigned long console_mfn = 0;
- static char *kwd_list[] = { "domid", "store_evtchn",
+ static char *kwd_list[] = { "domid", "store_evtchn", "memsize",
"console_evtchn", "image",
/* optional */
"ramdisk", "cmdline", "flags",
"features", NULL };
- if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiis|ssis", kwd_list,
- &dom, &store_evtchn,
+ if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiiis|ssis", kwd_list,
+ &dom, &store_evtchn, &mem_mb,
&console_evtchn, &image,
/* optional */
&ramdisk, &cmdline, &flags,
&features) )
return NULL;
- if ( xc_linux_build(self->xc_handle, dom, image,
+ if ( xc_linux_build(self->xc_handle, dom, mem_mb, image,
ramdisk, cmdline, features, flags,
store_evtchn, &store_mfn,
console_evtchn, &console_mfn) != 0 ) {
diff -r 70687bcb82dd -r e6fdb32b786c tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py Thu Nov 02 07:46:06 2006 +0000
+++ b/tools/python/xen/xend/XendDomainInfo.py Thu Nov 02 11:11:28 2006 +0000
@@ -1270,10 +1270,7 @@ class XendDomainInfo:
# Use architecture- and image-specific calculations to determine
# the various headrooms necessary, given the raw configured
- # values.
- # reservation, maxmem, memory, and shadow are all in KiB.
- reservation = self.image.getRequiredInitialReservation(
- self.info['memory'] * 1024)
+ # values. maxmem, memory, and shadow are all in KiB.
maxmem = self.image.getRequiredAvailableMemory(
self.info['maxmem'] * 1024)
memory = self.image.getRequiredAvailableMemory(
@@ -1295,12 +1292,6 @@ class XendDomainInfo:
# Set up the shadow memory
shadow_cur = xc.shadow_mem_control(self.domid, shadow / 1024)
self.info['shadow_memory'] = shadow_cur
-
- # Initial memory reservation
- if not (self._infoIsSet('image') and
- sxp.name(self.info['image']) == "hvm"):
- xc.domain_memory_increase_reservation(
- self.domid, reservation, 0, 0)
self._createChannels()
diff -r 70687bcb82dd -r e6fdb32b786c tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Thu Nov 02 07:46:06 2006 +0000
+++ b/tools/python/xen/xend/image.py Thu Nov 02 11:11:28 2006 +0000
@@ -152,13 +152,13 @@ class ImageHandler:
necessary."""
return mem_kb
- def getRequiredInitialReservation(self, mem_kb):
+ def getRequiredInitialReservation(self):
"""@param mem_kb The configured memory, in KiB.
@return The corresponding required amount of memory to be free, also
in KiB. This is normally the same as getRequiredAvailableMemory, but
architecture- or image-specific code may override this to
add headroom where necessary."""
- return self.getRequiredAvailableMemory(mem_kb)
+ return self.getRequiredAvailableMemory(self.vm.getMemoryTarget())
def getRequiredShadowMemory(self, shadow_mem_kb, maxmem_kb):
"""@param shadow_mem_kb The configured shadow memory, in KiB.
@@ -189,7 +189,10 @@ class LinuxImageHandler(ImageHandler):
store_evtchn = self.vm.getStorePort()
console_evtchn = self.vm.getConsolePort()
+ mem_mb = self.getRequiredInitialReservation() / 1024
+
log.debug("domid = %d", self.vm.getDomid())
+ log.debug("memsize = %d", mem_mb)
log.debug("image = %s", self.kernel)
log.debug("store_evtchn = %d", store_evtchn)
log.debug("console_evtchn = %d", console_evtchn)
@@ -199,6 +202,7 @@ class LinuxImageHandler(ImageHandler):
log.debug("features = %s", self.vm.getFeatures())
return xc.linux_build(domid = self.vm.getDomid(),
+ memsize = mem_mb,
image = self.kernel,
store_evtchn = store_evtchn,
console_evtchn = console_evtchn,
@@ -218,7 +222,10 @@ class PPC_LinuxImageHandler(LinuxImageHa
store_evtchn = self.vm.getStorePort()
console_evtchn = self.vm.getConsolePort()
+ mem_mb = self.getRequiredInitialReservation() / 1024
+
log.debug("domid = %d", self.vm.getDomid())
+ log.debug("memsize = %d", mem_mb)
log.debug("image = %s", self.kernel)
log.debug("store_evtchn = %d", store_evtchn)
log.debug("console_evtchn = %d", console_evtchn)
@@ -230,6 +237,7 @@ class PPC_LinuxImageHandler(LinuxImageHa
devtree = FlatDeviceTree.build(self)
return xc.linux_build(domid = self.vm.getDomid(),
+ memsize = mem_mb,
image = self.kernel,
store_evtchn = store_evtchn,
console_evtchn = console_evtchn,
@@ -272,10 +280,12 @@ class HVMImageHandler(ImageHandler):
def buildDomain(self):
store_evtchn = self.vm.getStorePort()
+ mem_mb = self.getRequiredInitialReservation() / 1024
+
log.debug("domid = %d", self.vm.getDomid())
log.debug("image = %s", self.kernel)
log.debug("store_evtchn = %d", store_evtchn)
- log.debug("memsize = %d", self.vm.getMemoryTarget() / 1024)
+ log.debug("memsize = %d", mem_mb)
log.debug("vcpus = %d", self.vm.getVCpuCount())
log.debug("pae = %d", self.pae)
log.debug("acpi = %d", self.acpi)
@@ -286,7 +296,7 @@ class HVMImageHandler(ImageHandler):
return xc.hvm_build(domid = self.vm.getDomid(),
image = self.kernel,
store_evtchn = store_evtchn,
- memsize = self.vm.getMemoryTarget() / 1024,
+ memsize = mem_mb,
vcpus = self.vm.getVCpuCount(),
pae = self.pae,
acpi = self.acpi,
@@ -401,7 +411,7 @@ class HVMImageHandler(ImageHandler):
#todo: Error handling
args = [self.device_model]
args = args + ([ "-d", "%d" % self.vm.getDomid(),
- "-m", "%s" % (self.vm.getMemoryTarget() / 1024)])
+ "-m", "%s" % (self.getRequiredInitialReservation() / 1024)])
args = args + self.dmargs
env = dict(os.environ)
if self.display:
@@ -480,8 +490,8 @@ class X86_HVM_ImageHandler(HVMImageHandl
# Add 8 MiB overhead for QEMU's video RAM.
return mem_kb + 8192
- def getRequiredInitialReservation(self, mem_kb):
- return mem_kb
+ def getRequiredInitialReservation(self):
+ return self.vm.getMemoryTarget()
def getRequiredShadowMemory(self, shadow_mem_kb, maxmem_kb):
# 256 pages (1MB) per vcpu,
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