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Viewing changes to libkvm/libkvm-x86.c

  • Committer: Bazaar Package Importer
  • Author(s): Soren Hansen
  • Date: 2008-02-26 13:10:57 UTC
  • mfrom: (1.1.18 upstream)
  • Revision ID: james.westby@ubuntu.com-20080226131057-s67x6l89mtjw1x9b
Tags: 1:62+dfsg-0ubuntu1
New upstream release

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Lines of Context:
libkvm/libkvm-x86.c
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        return ptr;
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}
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#define MAX_ALIAS_SLOTS 4
 
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static struct {
 
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        uint64_t start;
 
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        uint64_t len;
 
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} kvm_aliases[MAX_ALIAS_SLOTS];
 
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static int get_alias_slot(uint64_t start)
 
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{
 
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        int i;
 
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        for (i=0; i<MAX_ALIAS_SLOTS; i++)
 
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                if (kvm_aliases[i].start == start)
 
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                        return i;
 
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        return -1;
 
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}
 
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static int get_free_alias_slot(void)
 
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{
 
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        int i;
 
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        for (i=0; i<MAX_ALIAS_SLOTS; i++)
 
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                if (kvm_aliases[i].len == 0)
 
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                        return i;
 
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        return -1;
 
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}
 
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static void register_alias(int slot, uint64_t start, uint64_t len)
 
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{
 
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        kvm_aliases[slot].start = start;
 
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        kvm_aliases[slot].len   = len;
 
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}
 
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int kvm_create_memory_alias(kvm_context_t kvm,
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                            uint64_t phys_addr,
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                            uint64_t phys_start,
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                            uint64_t len,
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                            uint64_t target_phys)
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        };
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        int fd = kvm->vm_fd;
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        int r;
 
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        int slot;
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        alias.slot = get_slot(phys_addr);
 
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        slot = get_alias_slot(phys_start);
 
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        if (slot < 0)
 
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                slot = get_free_alias_slot();
 
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        if (slot < 0)
 
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                return -EBUSY;
 
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        alias.slot = slot;
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        r = ioctl(fd, KVM_SET_MEMORY_ALIAS, &alias);
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        if (r == -1)
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            return -errno;
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        register_alias(slot, phys_start, len);
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        return 0;
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}
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int kvm_destroy_memory_alias(kvm_context_t kvm, uint64_t phys_addr)
 
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int kvm_destroy_memory_alias(kvm_context_t kvm, uint64_t phys_start)
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{
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        return kvm_create_memory_alias(kvm, phys_addr, 0, 0, 0);
 
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        return kvm_create_memory_alias(kvm, phys_start, 0, 0);
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}
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#ifdef KVM_CAP_IRQCHIP