From mboxrd@z Thu Jan 1 00:00:00 1970 From: Elena Ufimtseva Subject: [PATCH v3 2/7] libxc: Plumb Xen with vNUMA topology for domain. Date: Mon, 18 Nov 2013 15:24:17 -0500 Message-ID: <1384806262-12532-3-git-send-email-ufimtseva@gmail.com> References: <1384806262-12532-1-git-send-email-ufimtseva@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1384806262-12532-1-git-send-email-ufimtseva@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: keir@xen.org, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, george.dunlap@eu.citrix.com, msw@linux.com, dario.faggioli@citrix.com, lccycc123@gmail.com, ian.jackson@eu.citrix.com, JBeulich@suse.com, Elena Ufimtseva List-Id: xen-devel@lists.xenproject.org Per-domain vNUMA topology initialization. domctl hypercall is used to set vNUMA topology per domU during domain build time. Signed-off-by: Elena Ufimtseva Changes since v2: * modified error logic; --- tools/libxc/xc_domain.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++ tools/libxc/xenctrl.h | 9 +++++++ 2 files changed, 72 insertions(+) diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c index 1ccafc5..198694f 100644 --- a/tools/libxc/xc_domain.c +++ b/tools/libxc/xc_domain.c @@ -1776,6 +1776,69 @@ int xc_domain_set_max_evtchn(xc_interface *xch, uint32_t domid, return do_domctl(xch, &domctl); } +/* Plumbs Xen with vNUMA topology */ +int xc_domain_setvnuma(xc_interface *xch, + uint32_t domid, + uint16_t nr_vnodes, + uint16_t nr_vcpus, + vmemrange_t *vmemrange, + unsigned int *vdistance, + unsigned int *vcpu_to_vnode, + unsigned int *vnode_to_pnode) +{ + int rc; + DECLARE_DOMCTL; + DECLARE_HYPERCALL_BOUNCE(vmemrange, sizeof(*vmemrange) * nr_vnodes, + XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + DECLARE_HYPERCALL_BOUNCE(vdistance, sizeof(*vdistance) * + nr_vnodes * nr_vnodes, + XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + DECLARE_HYPERCALL_BOUNCE(vcpu_to_vnode, sizeof(*vcpu_to_vnode) * nr_vcpus, + XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + DECLARE_HYPERCALL_BOUNCE(vnode_to_pnode, sizeof(*vnode_to_pnode) * + nr_vnodes, + XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + if ( nr_vnodes == 0 ) { + errno = EINVAL; + return -1; + } + + if ( vdistance == NULL || vcpu_to_vnode == NULL || + vmemrange == NULL || vnode_to_pnode == NULL ) { + PERROR("Incorrect parameters for XEN_DOMCTL_setvnumainfo.\n"); + errno = EINVAL; + return -1; + } + + if ( xc_hypercall_bounce_pre(xch, vmemrange) || + xc_hypercall_bounce_pre(xch, vdistance) || + xc_hypercall_bounce_pre(xch, vcpu_to_vnode) || + xc_hypercall_bounce_pre(xch, vnode_to_pnode) ) { + PERROR("Could not bounce buffer for xc_domain_setvnuma.\n"); + errno = EFAULT; + return -1; + } + + set_xen_guest_handle(domctl.u.vnuma.vmemrange, vmemrange); + set_xen_guest_handle(domctl.u.vnuma.vdistance, vdistance); + set_xen_guest_handle(domctl.u.vnuma.vcpu_to_vnode, vcpu_to_vnode); + set_xen_guest_handle(domctl.u.vnuma.vnode_to_pnode, vnode_to_pnode); + + domctl.cmd = XEN_DOMCTL_setvnumainfo; + domctl.domain = (domid_t)domid; + domctl.u.vnuma.nr_vnodes = nr_vnodes; + domctl.u.vnuma.__pad = 0; + + rc = do_domctl(xch, &domctl); + + xc_hypercall_bounce_post(xch, vmemrange); + xc_hypercall_bounce_post(xch, vdistance); + xc_hypercall_bounce_post(xch, vcpu_to_vnode); + xc_hypercall_bounce_post(xch, vnode_to_pnode); + + return rc; +} + /* * Local variables: * mode: C diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h index 4ac6b8a..f360726 100644 --- a/tools/libxc/xenctrl.h +++ b/tools/libxc/xenctrl.h @@ -1136,6 +1136,15 @@ int xc_domain_set_memmap_limit(xc_interface *xch, uint32_t domid, unsigned long map_limitkb); +int xc_domain_setvnuma(xc_interface *xch, + uint32_t domid, + uint16_t nr_vnodes, + uint16_t nr_vcpus, + vmemrange_t *vmemrange, + unsigned int *vdistance, + unsigned int *vcpu_to_vnode, + unsigned int *vnode_to_pnode); + #if defined(__i386__) || defined(__x86_64__) /* * PC BIOS standard E820 types and structure. -- 1.7.10.4