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Andrew Cooper
305e957ffe
hvmloader is unhosted, and shouldn't use the system errno.h. It already has to use Xen's errno.h for other hypercalls. The use of public/io/xs_wire.h requires the use of un-prefixed errno values. This fixes the build on stricter toolchains where requesting -fno-builtin does reduce the include path as much as it can. Reported-by: Doug Goldstein <cardoe@cardoe.com> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Doug Goldstein <cardoe@cardoe.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com>
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
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* vnuma.c: obtain vNUMA information from hypervisor
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*
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* Copyright (c) 2014 Wei Liu, Citrix Systems (R&D) Ltd.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "util.h"
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#include "hypercall.h"
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#include "vnuma.h"
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unsigned int nr_vnodes, nr_vmemranges;
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unsigned int *vcpu_to_vnode, *vdistance;
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xen_vmemrange_t *vmemrange;
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void init_vnuma_info(void)
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{
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int rc;
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struct xen_vnuma_topology_info vnuma_topo = { .domid = DOMID_SELF };
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rc = hypercall_memory_op(XENMEM_get_vnumainfo, &vnuma_topo);
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if ( rc != -ENOBUFS )
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return;
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ASSERT(vnuma_topo.nr_vcpus == hvm_info->nr_vcpus);
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vcpu_to_vnode =
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scratch_alloc(sizeof(*vcpu_to_vnode) * hvm_info->nr_vcpus, 0);
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vdistance = scratch_alloc(sizeof(uint32_t) * vnuma_topo.nr_vnodes *
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vnuma_topo.nr_vnodes, 0);
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vmemrange = scratch_alloc(sizeof(xen_vmemrange_t) *
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vnuma_topo.nr_vmemranges, 0);
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set_xen_guest_handle(vnuma_topo.vdistance.h, vdistance);
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set_xen_guest_handle(vnuma_topo.vcpu_to_vnode.h, vcpu_to_vnode);
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set_xen_guest_handle(vnuma_topo.vmemrange.h, vmemrange);
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rc = hypercall_memory_op(XENMEM_get_vnumainfo, &vnuma_topo);
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if ( rc < 0 )
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{
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printf("Failed to retrieve vNUMA information, rc = %d\n", rc);
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return;
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}
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nr_vnodes = vnuma_topo.nr_vnodes;
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nr_vmemranges = vnuma_topo.nr_vmemranges;
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}
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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