|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XenPPC] [pushed] [ppc] Move shared pages into RMA
changeset: 9715:1bdd8ec03da55dd5d7a802a147d9e77d06d3a244
tag: tip
user: jimix@xxxxxxxxxxxxxxxxxxxxx
date: Thu Mar 30 18:40:26 2006 -0500
files: xen/arch/ppc/domain.c xen/arch/ppc/domain_build.c
xen/arch/ppc/mm.c xen/arch/ppc/ofd_fixup.c xen/arch/ppc/papr/xlate.c
xen/arch/ppc/ppc64/ppc970.c xen/arch/ppc/usercopy.c
xen/include/asm-ppc/domain.h xen/include/asm-ppc/mm.h
description:
[ppc] Move shared pages into RMA
- All references to RMO should actually be RMA.
- Allocate domain shared_info page from the RMA
- Remove all magical PFN hacks for mapping shared pages.
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/domain.c
--- a/xen/arch/ppc/domain.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/domain.c Thu Mar 30 18:40:26 2006 -0500
@@ -68,28 +68,25 @@ unsigned long hypercall_create_continuat
int arch_domain_create(struct domain *d)
{
- void *dummy;
-
- /* dummy safety page for mapping pages that are yet to be shared */
- dummy = alloc_xenheap_page();
- clear_page(dummy);
- d->arch.shared_dummy_pfn = (ulong)dummy >> PAGE_SHIFT;
-
- /* Shared area pfn2mfn array, may end up publishing this */
- d->arch.shared_pfn2mfn = (void *)alloc_xenheap_page();
- clear_page(d->arch.shared_pfn2mfn);
- d->arch.shared_nr_pfn = PAGE_SHIFT - 3;
-
- d->shared_info = (void *)alloc_xenheap_page();
- clear_page(d->shared_info);
+
+ if (d->domain_id == IDLE_DOMAIN_ID) {
+ d->shared_info = (void *)alloc_xenheap_page();
+ clear_page(d->shared_info);
+
+ return 0;
+ }
+
+ /* XXX the hackage... hardcode 64M domains */
+ d->arch.rma_base = (64<<20) * (d->domain_id + 1);
+ d->arch.rma_size = (64<<20);
+
+ printk("clearing RMO: 0x%lx[0x%lx]\n", d->arch.rma_base, d->arch.rma_size);
+ memset((void*)d->arch.rma_base, 0, d->arch.rma_size);
htab_alloc(d, LOG_DEFAULT_HTAB_BYTES);
- /* XXX the hackage... hardcode 64M domains */
- d->arch.rmo_base = (64<<20) * (d->domain_id + 1);
- d->arch.rmo_len = (64<<20);
-
- d->arch.shared_base_pfn = (d->arch.rmo_len >> PAGE_SHIFT) - 1;
+ d->shared_info = (shared_info_t *)
+ (rma_addr(&d->arch, RMA_SHARED_INFO) + d->arch.rma_base);
d->arch.large_page_sizes = 1;
d->arch.large_page_shift[0] = 24; /* 16 M for 970s */
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/domain_build.c
--- a/xen/arch/ppc/domain_build.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/domain_build.c Thu Mar 30 18:40:26 2006 -0500
@@ -23,6 +23,7 @@
#include <xen/init.h>
#include <xen/ctype.h>
#include <xen/iocap.h>
+#include <xen/compile.h>
#include <asm/processor.h>
#include <asm/papr.h>
@@ -88,7 +89,7 @@ static inline int is_loadable_phdr(Elf_P
((phdr->p_flags & (PF_W|PF_X)) != 0));
}
-static int rm_loadelfimage(struct domain_setup_info *dsi, ulong rmo)
+static int rm_loadelfimage(struct domain_setup_info *dsi, ulong rma)
{
char *elfbase = (char *)dsi->image_addr;
Elf_Ehdr *ehdr = (Elf_Ehdr *)dsi->image_addr;
@@ -101,11 +102,11 @@ static int rm_loadelfimage(struct domain
if (!is_loadable_phdr(phdr))
continue;
if (phdr->p_filesz != 0)
- memcpy((char *)(rmo + RM_MASK(phdr->p_paddr, 42)),
+ memcpy((char *)(rma + RM_MASK(phdr->p_paddr, 42)),
elfbase + phdr->p_offset,
phdr->p_filesz);
if (phdr->p_memsz > phdr->p_filesz)
- memset((char *)(rmo + RM_MASK(phdr->p_paddr, 42) + phdr->p_filesz),
+ memset((char *)(rma + RM_MASK(phdr->p_paddr, 42) + phdr->p_filesz),
0, phdr->p_memsz - phdr->p_filesz);
}
@@ -126,11 +127,9 @@ int construct_dom0(struct domain *d,
struct domain_setup_info dsi;
ulong dst;
u64 *ofh_tree;
- ulong rmo_sz = d->arch.rmo_len;
- ulong rmo = d->arch.rmo_base;
+ ulong rma_sz = d->arch.rma_size;
+ ulong rma = d->arch.rma_base;
start_info_t *si;
- ulong vstartinfo_start;
- ulong vstartinfo_end;
ulong eomem;
/* Sanity! */
@@ -162,37 +161,26 @@ int construct_dom0(struct domain *d,
/* By default DOM0 is allocated all available memory. */
d->max_pages = ~0U;
- ASSERT( image_len < rmo_sz );
- printk("clearing RMO: 0x%lx[0x%lx]\n", rmo, rmo_sz);
- memset((void*)rmo, 0, rmo_sz);
-
- /* place the start info at the end */
- eomem = rmo_sz;
- vstartinfo_end = eomem;
- eomem -= PAGE_SIZE;
- vstartinfo_start = eomem;
- printk("xen_start_info: 0x%lx\n", vstartinfo_start);
- si = (start_info_t *)(vstartinfo_start + rmo);
-
+ ASSERT( image_len < rma_sz );
+
+ si = (start_info_t *)(rma_addr(&d->arch, RMA_START_INFO) + rma);
+ printk("xen_start_info: %p\n", si);
+
+ sprintf(si->magic, "xen-%i.%i-powerpc%d%s",
+ XEN_VERSION, XEN_SUBVERSION, BITS_PER_LONG, "HV");
si->flags = SIF_PRIVILEGED | SIF_INITDOMAIN;
- /* first page of shared region belongs to the Xen Shared Info page */
- d->arch.shared_pfn2mfn[0] = ((ulong)d->shared_info) >> PAGE_SHIFT;
-
- /* place the shared area one page below the top of RMO. */
- d->arch.shared_base_pfn = (rmo_sz >> PAGE_SHIFT) - 1;
- si->shared_info = d->arch.shared_base_pfn << PAGE_SHIFT;
+ si->shared_info = ((ulong)d->shared_info) - rma;
+ printk("shared_info: 0x%lx,%p\n", si->shared_info, d->shared_info);
+
+ eomem = si->shared_info;
/* allow dom0 to access all of system RAM */
d->arch.logical_base_pfn = 128 << (20 - PAGE_SHIFT); /* 128 MB */
d->arch.logical_end_pfn = max_page;
- /* dom0 is not given a store or console page */
- si->store_mfn = d->arch.shared_base_pfn + 1;
- si->console_mfn = d->arch.shared_base_pfn + 2;
-
/* number of pages accessible */
- si->nr_pages = (rmo_sz >> PAGE_SHIFT) + 3;
+ si->nr_pages = rma_sz >> PAGE_SHIFT;
si->pt_base = 0;
si->nr_pt_frames = 0;
@@ -208,30 +196,31 @@ int construct_dom0(struct domain *d,
v->arch.ctxt.gprs[1] = dst - STACK_FRAME_OVERHEAD;
/* copy relative to Xen */
- dst += rmo;
+ dst += rma;
extern int ofh_image_start[0];
extern int ofh_image_size[0];
- ASSERT((dst - rmo) + (ulong)ofh_image_size < eomem);
- printk("loading OFH: 0x%lx, 0x%p\n", dst, ofh_image_size);
+ ASSERT((dst - rma) + (ulong)ofh_image_size < eomem);
+ printk("loading OFH: 0x%lx, RMA: 0x%lx\n", dst, dst - rma);
memcpy((void *)dst, ofh_image_start, (ulong)ofh_image_size);
- v->arch.ctxt.gprs[5] = (dst - rmo);
+ v->arch.ctxt.gprs[5] = (dst - rma);
ofh_tree = (u64 *)(dst + 0x10);
ASSERT(*ofh_tree == 0xdeadbeef00000000);
/* accomodate for a modest bss section */
dst = ALIGN_UP(dst + (ulong)ofh_image_size + PAGE_SIZE, PAGE_SIZE);
- ASSERT((dst - rmo) + oftree_len < eomem);
-
- *ofh_tree = dst - rmo;
- printk("loading OFD: 0x%lx, 0x%lx\n", dst, oftree_len);
+ ASSERT((dst - rma) + oftree_len < eomem);
+
+ *ofh_tree = dst - rma;
+ printk("loading OFD: 0x%lx RMA: 0x%lx, 0x%lx\n", dst, dst - rma,
+ oftree_len);
memcpy((void *)dst, (void *)oftree, oftree_len);
dst = ALIGN_UP(dst + oftree_len, PAGE_SIZE);
- printk("loading Dom0: 0x%lx, in RMO:0x%lx\n", dst, dst - rmo);
+ printk("loading Dom0: 0x%lx, in RMA:0x%lx\n", dst, dst - rma);
rm_loadelfimage(&dsi, dst);
ulong kbase = dst;
@@ -239,12 +228,12 @@ int construct_dom0(struct domain *d,
/* move dst to end of bss */
dst = ALIGN_UP(dsi.v_kernend + dst, PAGE_SIZE);
if ( initrd_len > 0 ) {
- ASSERT( (dst - rmo) + image_len < eomem );
+ ASSERT( (dst - rma) + image_len < eomem );
printk("loading initrd: 0x%lx, 0x%lx\n", dst, initrd_len);
memcpy((void *)dst, (void *)initrd_start, initrd_len);
- si->mod_start = dst - rmo;
+ si->mod_start = dst - rma;
si->mod_len = image_len;
dst = ALIGN_UP(dst + initrd_len, PAGE_SIZE);
@@ -274,10 +263,10 @@ int construct_dom0(struct domain *d,
&& ((fdesc[1] >= dsi.v_kernstart) /* toc can be greater than image */
&& (fdesc[1] < (dsi.v_kernend + (0x7fff * sizeof (ulong)))))) {
/* it is almost certainly a function descriptor */
- pc = RM_MASK(fdesc[0], 42) + kbase - rmo;
- r2 = RM_MASK(fdesc[1], 42) + kbase - rmo;
+ pc = RM_MASK(fdesc[0], 42) + kbase - rma;
+ r2 = RM_MASK(fdesc[1], 42) + kbase - rma;
} else {
- pc = ((ulong)fdesc) - rmo;
+ pc = ((ulong)fdesc) - rma;
r2 = 0;
}
@@ -286,7 +275,7 @@ int construct_dom0(struct domain *d,
printk("DOM: pc = 0x%lx, r2 = 0x%lx\n", pc, r2);
- ofd_dom0_fixup(d, *ofh_tree + rmo, si, dst);
+ ofd_dom0_fixup(d, *ofh_tree + rma, si, dst - rma);
set_bit(_VCPUF_initialised, &v->vcpu_flags);
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/mm.c
--- a/xen/arch/ppc/mm.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/mm.c Thu Mar 30 18:40:26 2006 -0500
@@ -100,32 +100,23 @@ extern void copy_page(void *dp, void *sp
ulong pfn2mfn(struct domain *d, long pfn, int *type)
{
- ulong rmo_base_mfn = d->arch.rmo_base >> PAGE_SHIFT;
- ulong rmo_len_mfn = d->arch.rmo_len >> PAGE_SHIFT;
+ ulong rma_base_mfn = d->arch.rma_base >> PAGE_SHIFT;
+ ulong rma_size_mfn = d->arch.rma_size >> PAGE_SHIFT;
ulong mfn;
int t;
- if (pfn >= d->arch.shared_base_pfn &&
- pfn < (d->arch.shared_base_pfn + d->arch.shared_nr_pfn)) {
- /* shared_info physical mapping (not machine address) is inside RMO, so
- * need to test for it first. */
- mfn = d->arch.shared_pfn2mfn[pfn - d->arch.shared_base_pfn];
- if (mfn == 0) {
- mfn = d->arch.shared_dummy_pfn;
- }
- t = PFN_TYPE_SHARED;
- } else if (pfn < rmo_len_mfn) {
- mfn = pfn + rmo_base_mfn;
- t = PFN_TYPE_RMO;
+ if (pfn < rma_size_mfn) {
+ mfn = pfn + rma_base_mfn;
+ t = PFN_TYPE_RMA;
} else if (pfn >= d->arch.logical_base_pfn &&
- pfn < d->arch.logical_end_pfn) {
+ pfn < d->arch.logical_end_pfn) {
if (test_bit(_DOMF_privileged, &d->domain_flags)) {
/* This hack allows dom0 to map all memory, necessary to
* initialize domU state. */
mfn = pfn;
} else {
panic("we do not handle the logical area yet\n");
- mfn = 0;
+ mfn = 0;
}
t = PFN_TYPE_LOGICAL;
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/ofd_fixup.c
--- a/xen/arch/ppc/ofd_fixup.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/ofd_fixup.c Thu Mar 30 18:40:26 2006 -0500
@@ -361,8 +361,8 @@ static ofdn_t ofd_memory_props(void *m,
ofdn_t n = -1;
ulong start = 0;
static char name[] = "memory";
- ulong mem_size = d->arch.rmo_len;
- ulong chunk_size = d->arch.rmo_len;
+ ulong mem_size = d->arch.rma_size;
+ ulong chunk_size = d->arch.rma_size;
/* Remove all old memory props */
do {
@@ -382,7 +382,7 @@ static ofdn_t ofd_memory_props(void *m,
start, size);
if (start == 0) {
- /* We are processing the first and RMO chunk */
+ /* We are processing the first and RMA chunk */
/* free list of physical addresses available after OF and
* client program have been accounted for */
@@ -426,7 +426,7 @@ static ofdn_t ofd_xen_props(void *m, str
if (n > 0) {
char xen[256];
int xl;
- u32 val;
+ u32 val[2];
ofd_prop_add(m, n, "name", &path[1], sizeof (path) - 1);
@@ -435,22 +435,13 @@ static ofdn_t ofd_xen_props(void *m, str
ASSERT(xl < sizeof (xen));
ofd_prop_add(m, n, "version", xen, xl + 1);
- val = (ulong)si - d->arch.rmo_base;
- ofd_prop_add(m, n, "start-info", &val, sizeof (val));
- val = PAGE_SIZE;
- ofd_prop_add(m, n, "start-info-size", &val, sizeof (val));
-
- /* the very last memory chunk is small and contains the PFNs
- * that contain Xen uses for communication pages that coincide
- * with the start_info page */
- /* its just 3 pages right now:
- * 1. the shared page
- * 2. the XenStore page
- * 3. the console page, tho dom0 does not have one
- */
- n = ofd_memory_chunk_create(m, n, "/xen", "shared", "xen-shared",
- d->arch.shared_base_pfn << PAGE_SHIFT,
- 3 << PAGE_SHIFT);
+ val[0] = (ulong)si - d->arch.rma_base;
+ val[1] = PAGE_SIZE;
+ ofd_prop_add(m, n, "start-info", val, sizeof (val));
+
+ val[1] = RMA_LAST_DOM0 * PAGE_SIZE;
+ val[0] = d->arch.rma_size - val[1];
+ ofd_prop_add(m, n, "reserved", val, sizeof (val));
}
return n;
}
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/papr/xlate.c
--- a/xen/arch/ppc/papr/xlate.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/papr/xlate.c Thu Mar 30 18:40:26 2006 -0500
@@ -191,14 +191,6 @@ static void h_enter(struct cpu_user_regs
return;
}
}
- if (mtype == PFN_TYPE_SHARED) {
- /* this areas must be mapped with 4k pages */
- if (pte.bits.l) {
- printk("%s: Large page in shared region: 0x%lx\n", __func__, lpn);
- regs->gprs[3] = H_Parameter;
- return;
- }
- }
/* fixup the RPN field of our local PTE copy */
pte.bits.rpn = rpn | lp_bits;
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/ppc64/ppc970.c
--- a/xen/arch/ppc/ppc64/ppc970.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/ppc64/ppc970.c Thu Mar 30 18:40:26 2006 -0500
@@ -94,20 +94,20 @@ void cpu_init_vcpu(struct vcpu *v)
{
struct domain *d = v->domain;
union hid4 hid4;
- ulong rmo_base = d->arch.rmo_base;
- ulong rmo_size = d->arch.rmo_len;
+ ulong rma_base = d->arch.rma_base;
+ ulong rma_size = d->arch.rma_size;
hid4.word = mfhid4();
hid4.bits.lpes0 = 0; /* exceptions go to hypervisor vectors */
- hid4.bits.lpes1 = 1; /* RMO applies */
+ hid4.bits.lpes1 = 1; /* RMA applies */
- hid4.bits.rmor = rmo_base >> 26;
+ hid4.bits.rmor = rma_base >> 26;
hid4.bits.lpid01 = d->domain_id & 3;
hid4.bits.lpid25 = (d->domain_id >> 2) & 0xf;
- switch (rmo_size) {
+ switch (rma_size) {
case 256ULL << 30: /* 256 GB */
hid4.bits.rmlr0 = 0;
hid4.bits.rmlr12 = 0;
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/arch/ppc/usercopy.c
--- a/xen/arch/ppc/usercopy.c Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/arch/ppc/usercopy.c Thu Mar 30 18:40:26 2006 -0500
@@ -42,7 +42,7 @@ unsigned long paddr_to_maddr(unsigned lo
pa = pfn2mfn(d, pfn, &mtype);
switch (mtype) {
- case PFN_TYPE_RMO:
+ case PFN_TYPE_RMA:
case PFN_TYPE_LOGICAL:
break;
default:
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/include/asm-ppc/domain.h
--- a/xen/include/asm-ppc/domain.h Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/include/asm-ppc/domain.h Thu Mar 30 18:40:26 2006 -0500
@@ -32,28 +32,12 @@ struct arch_domain {
struct domain_htab htab;
/* The RMO area is fixed to the domain and is accessible while the
* processor is in real mode */
- ulong rmo_base;
- ulong rmo_len;
+ ulong rma_base;
+ ulong rma_size;
/* This is regular memory, only available thru translataion */
ulong logical_base_pfn;
ulong logical_end_pfn;
-
- /* This is an area dedicated for cross-domain and hypervisor
- * shared pages, only 4k PTE are allowed in this region. Since
- * the domain is free to use large pages elsewhere is must be in
- * its own segment on machines that do not allow mixing of page
- * sizes in the segment */
- ulong shared_base_pfn;
- ulong shared_nr_pfn;
- ulong *shared_pfn2mfn;
-
- /* since most kernels map all of accessible memory in the kernel's
- * address space, pages in the shared region that have no real
- * page assigned get mapped to thsi dummy page. We should, every
- * once in a while, check and make sure that this page stays clear
- * becuase bad thing can happen if the domain actually uses it. */
- ulong shared_dummy_pfn;
/* I/O-port access bitmap mask. */
u8 *iobmp_mask; /* Address of IO bitmap mask, or NULL. */
@@ -109,4 +93,16 @@ extern void load_float(struct vcpu *);
#define arch_event_deliverable (!!((guest_cpu_user_regs())->msr & MSR_EE))
+#define RMA_SHARED_INFO 1
+#define RMA_START_INFO 2
+#define RMA_LAST_DOM0 2
+/* these are not used for dom0 so they should be last */
+#define RMA_CONSOLE 3
+#define RMA_LAST_DOMU 3
+
+static inline ulong rma_addr(struct arch_domain *d, int type)
+{
+ return d->rma_size - (type * PAGE_SIZE);
+}
+
#endif
diff -r 2389fd7700c5c9d251d0ce8f666d01c48cb13f55 -r
1bdd8ec03da55dd5d7a802a147d9e77d06d3a244 xen/include/asm-ppc/mm.h
--- a/xen/include/asm-ppc/mm.h Thu Mar 30 18:38:23 2006 -0500
+++ b/xen/include/asm-ppc/mm.h Thu Mar 30 18:40:26 2006 -0500
@@ -195,10 +195,9 @@ extern int update_grant_va_mapping(unsig
extern void put_page_type(struct page_info *page);
-#define PFN_TYPE_RMO 0
+#define PFN_TYPE_RMA 0
#define PFN_TYPE_LOGICAL 1
-#define PFN_TYPE_SHARED 2
-#define PFN_TYPE_IO 3
+#define PFN_TYPE_IO 2
extern ulong pfn2mfn(struct domain *d, long mfn, int *type);
/* Arch-specific portion of memory_op hypercall. */
_______________________________________________
Xen-ppc-devel mailing list
Xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ppc-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |