[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 8/9] tools/libxc: add support of injecting MC# to specified CPUs
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@xxxxxxxxx> --- Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> Cc: Wei Liu <wei.liu2@xxxxxxxxxx> 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(-) diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h index 2d97d36..2399956 100644 --- a/tools/libxc/include/xenctrl.h +++ b/tools/libxc/include/xenctrl.h @@ -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 { diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index 88084fd..2303293 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -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) { -- 2.10.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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