@@ -1796,6 +1796,8 @@ int xc_cpuid_apply_policy(xc_interface *xch,
void xc_cpuid_to_str(const unsigned int *regs,
char **strs); /* some strs[] may be NULL if ENOMEM */
int xc_mca_op(xc_interface *xch, struct xen_mc *mc);
+int xc_mca_op_inject_v2(xc_interface *xch, unsigned int flags,
+ xc_cpumap_t cpumap, unsigned int nr_cpus);
#endif
struct xc_px_val {
@@ -341,7 +341,57 @@ int xc_mca_op(xc_interface *xch, struct xen_mc *mc)
xc_hypercall_bounce_post(xch, mc);
return ret;
}
-#endif
+
+int xc_mca_op_inject_v2(xc_interface *xch, unsigned int flags,
+ xc_cpumap_t cpumap, unsigned int nr_bits)
+{
+ int ret = -1;
+ struct xen_mc mc_buf, *mc = &mc_buf;
+ struct xen_mc_inject_v2 *inject = &mc->u.mc_inject_v2;
+
+ DECLARE_HYPERCALL_BOUNCE(cpumap, 0, XC_HYPERCALL_BUFFER_BOUNCE_IN);
+ DECLARE_HYPERCALL_BOUNCE(mc, sizeof(*mc), XC_HYPERCALL_BUFFER_BOUNCE_BOTH);
+
+ memset(mc, 0, sizeof(*mc));
+
+ if ( cpumap )
+ {
+ if ( !nr_bits )
+ {
+ errno = EINVAL;
+ goto out;
+ }
+
+ HYPERCALL_BOUNCE_SET_SIZE(cpumap, (nr_bits + 7) / 8);
+ if ( xc_hypercall_bounce_pre(xch, cpumap) )
+ {
+ PERROR("Could not bounce cpumap memory buffer");
+ goto out;
+ }
+ set_xen_guest_handle(inject->cpumap.bitmap, cpumap);
+ inject->cpumap.nr_bits = nr_bits;
+ }
+
+ inject->flags = flags;
+ mc->cmd = XEN_MC_inject_v2;
+ mc->interface_version = XEN_MCA_INTERFACE_VERSION;
+
+ if ( xc_hypercall_bounce_pre(xch, mc) )
+ {
+ PERROR("Could not bounce xen_mc memory buffer");
+ goto out_free_cpumap;
+ }
+
+ ret = xencall1(xch->xcall, __HYPERVISOR_mca, HYPERCALL_BUFFER_AS_ARG(mc));
+
+ xc_hypercall_bounce_post(xch, mc);
+out_free_cpumap:
+ if ( cpumap )
+ xc_hypercall_bounce_post(xch, cpumap);
+out:
+ return ret;
+}
+#endif /* __i386__ || __x86_64__ */
int xc_perfc_reset(xc_interface *xch)
{
Though XEN_MC_inject_v2 allows injecting MC# to specified CPUs, the current xc_mca_op() does not use this feature and not provide an interface to callers. This commit add a new xc_mca_op_inject_v2() that receives a cpumap providing the set of target CPUs. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> --- Cc: Ian Jackson <ian.jackson@eu.citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Changes in v3: * Use goto error handling style. --- tools/libxc/include/xenctrl.h | 2 ++ tools/libxc/xc_misc.c | 52 ++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 53 insertions(+), 1 deletion(-)