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yaml
---
r: 143237
b: refs/heads/master
c: a957fac
h: refs/heads/master
i:
  143235: c5f6a1a
v: v3
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Jeremy Fitzhardinge committed Apr 8, 2009
1 parent ea139d1 commit 0decbf4
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Showing 2 changed files with 7 additions and 9 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: c7da8c829b3f919089ff021d6ddc376d38299729
refs/heads/master: a957fac50023eac09368ab19d3a7ec725c2657c3
14 changes: 6 additions & 8 deletions trunk/arch/x86/xen/enlighten.c
Original file line number Diff line number Diff line change
Expand Up @@ -284,22 +284,18 @@ static void xen_set_ldt(const void *addr, unsigned entries)

static void xen_load_gdt(const struct desc_ptr *dtr)
{
unsigned long *frames;
unsigned long va = dtr->address;
unsigned int size = dtr->size + 1;
unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
unsigned long frames[pages];
int f;
struct multicall_space mcs;

/* A GDT can be up to 64k in size, which corresponds to 8192
8-byte entries, or 16 4k pages.. */

BUG_ON(size > 65536);
BUG_ON(va & ~PAGE_MASK);

mcs = xen_mc_entry(sizeof(*frames) * pages);
frames = mcs.args;

for (f = 0; va < dtr->address + size; va += PAGE_SIZE, f++) {
int level;
pte_t *ptep = lookup_address(va, &level);
Expand All @@ -314,13 +310,15 @@ static void xen_load_gdt(const struct desc_ptr *dtr)

frames[f] = mfn;

printk("xen_load_gdt: %d va=%p mfn=%lx pfn=%lx va'=%p\n",
f, (void *)va, mfn, pfn, virt);

make_lowmem_page_readonly((void *)va);
make_lowmem_page_readonly(virt);
}

MULTI_set_gdt(mcs.mc, frames, size / sizeof(struct desc_struct));

xen_mc_issue(PARAVIRT_LAZY_CPU);
if (HYPERVISOR_set_gdt(frames, size / sizeof(struct desc_struct)))
BUG();
}

static void load_TLS_descriptor(struct thread_struct *t,
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