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| author | Jan Beulich <jbeulich@novell.com> | 2011-04-05 13:03:29 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@novell.com> | 2011-04-05 13:03:29 +0100 |
| commit | 2037f2adbf04d7c6dd2b566045e90ccdd5034ee2 (patch) | |
| tree | 3e93b8a218f7ae79872a59829bc9baded30bab64 /xen/common/domain.c | |
| parent | 1dd3a56b4338962b953545ed16f4de1d1a394189 (diff) | |
| download | xen-2037f2adbf04d7c6dd2b566045e90ccdd5034ee2.tar.gz xen-2037f2adbf04d7c6dd2b566045e90ccdd5034ee2.tar.bz2 xen-2037f2adbf04d7c6dd2b566045e90ccdd5034ee2.zip | |
x86: introduce alloc_vcpu_guest_context()
This is necessary because on x86-64 struct vcpu_guest_context is
larger than PAGE_SIZE, and hence not suitable for a general purpose
runtime allocation. On x86-32, FIX_PAE_HIGHMEM_* fixmap entries are
being re-used, whiule on x86-64 new per-CPU fixmap entries get
introduced. The implication of using per-CPU fixmaps is that these
allocations have to happen from non-preemptable hypercall context
(which they all do).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Diffstat (limited to 'xen/common/domain.c')
| -rw-r--r-- | xen/common/domain.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/xen/common/domain.c b/xen/common/domain.c index 1290f655fe..852c968bba 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -832,12 +832,12 @@ long do_vcpu_op(int cmd, int vcpuid, XEN_GUEST_HANDLE(void) arg) if ( v->vcpu_info == &dummy_vcpu_info ) return -EINVAL; - if ( (ctxt = xmalloc(struct vcpu_guest_context)) == NULL ) + if ( (ctxt = alloc_vcpu_guest_context()) == NULL ) return -ENOMEM; if ( copy_from_guest(ctxt, arg, 1) ) { - xfree(ctxt); + free_vcpu_guest_context(ctxt); return -EFAULT; } @@ -847,7 +847,7 @@ long do_vcpu_op(int cmd, int vcpuid, XEN_GUEST_HANDLE(void) arg) rc = boot_vcpu(d, vcpuid, ctxt); domain_unlock(d); - xfree(ctxt); + free_vcpu_guest_context(ctxt); break; case VCPUOP_up: |