#include <xen/interface/sched.h>
#include <xen/interface/physdev.h>
#include <xen/interface/platform.h>
+#include <xen/interface/xen-mca.h>
/*
* The hypercall asms have to meet several constraints:
return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
}
+static inline int
+HYPERVISOR_mca(struct xen_mc *mc_op)
+{
+ mc_op->interface_version = XEN_MCA_INTERFACE_VERSION;
+ return _hypercall1(int, mca, mc_op);
+}
+
static inline int
HYPERVISOR_dom0_op(struct xen_platform_op *platform_op)
{
int mce_disabled __read_mostly;
-#define MISC_MCELOG_MINOR 227
-
#define SPINUNIT 100 /* 100ns */
atomic_t mce_entry;
return err;
}
-device_initcall(mcheck_init_device);
+device_initcall_sync(mcheck_init_device);
/*
* Old style boot options parsing. Only for compatibility.
#include <xen/interface/physdev.h>
#include <xen/interface/vcpu.h>
#include <xen/interface/memory.h>
+#include <xen/interface/xen-mca.h>
#include <xen/features.h>
#include <xen/page.h>
#include <xen/hvm.h>
unsigned int xsave_mask;
cpuid_leaf1_edx_mask =
- ~((1 << X86_FEATURE_MCE) | /* disable MCE */
- (1 << X86_FEATURE_MCA) | /* disable MCA */
- (1 << X86_FEATURE_MTRR) | /* disable MTRR */
+ ~((1 << X86_FEATURE_MTRR) | /* disable MTRR */
(1 << X86_FEATURE_ACC)); /* thermal monitoring */
if (!xen_initial_domain())
called xen_acpi_processor If you do not know what to choose, select
M here. If the CPUFREQ drivers are built in, select Y here.
+config XEN_MCE_LOG
+ bool "Xen platform mcelog"
+ depends on XEN_DOM0 && X86_64 && X86_MCE
+ default n
+ help
+ Allow kernel fetching MCE error from Xen platform and
+ converting it into Linux mcelog format for mcelog tools
+
endmenu
obj-$(CONFIG_XEN_TMEM) += tmem.o
obj-$(CONFIG_SWIOTLB_XEN) += swiotlb-xen.o
obj-$(CONFIG_XEN_DOM0) += pci.o acpi.o
+obj-$(CONFIG_XEN_MCE_LOG) += mcelog.o
obj-$(CONFIG_XEN_PCIDEV_BACKEND) += xen-pciback/
obj-$(CONFIG_XEN_PRIVCMD) += xen-privcmd.o
obj-$(CONFIG_XEN_ACPI_PROCESSOR) += xen-acpi-processor.o
--- /dev/null
+/******************************************************************************
+ * mcelog.c
+ * Driver for receiving and transferring machine check error infomation
+ *
+ * Copyright (c) 2012 Intel Corporation
+ * Author: Liu, Jinsong <jinsong.liu@intel.com>
+ * Author: Jiang, Yunhong <yunhong.jiang@intel.com>
+ * Author: Ke, Liping <liping.ke@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/capability.h>
+
+#include <xen/interface/xen.h>
+#include <xen/events.h>
+#include <xen/interface/vcpu.h>
+#include <xen/xen.h>
+#include <asm/xen/hypercall.h>
+#include <asm/xen/hypervisor.h>
+
+#define XEN_MCELOG "xen_mcelog: "
+
+static struct mc_info g_mi;
+static struct mcinfo_logical_cpu *g_physinfo;
+static uint32_t ncpus;
+
+static DEFINE_SPINLOCK(mcelog_lock);
+
+static struct xen_mce_log xen_mcelog = {
+ .signature = XEN_MCE_LOG_SIGNATURE,
+ .len = XEN_MCE_LOG_LEN,
+ .recordlen = sizeof(struct xen_mce),
+};
+
+static DEFINE_SPINLOCK(xen_mce_chrdev_state_lock);
+static int xen_mce_chrdev_open_count; /* #times opened */
+static int xen_mce_chrdev_open_exclu; /* already open exclusive? */
+
+static int xen_mce_chrdev_open(struct inode *inode, struct file *file)
+{
+ spin_lock(&xen_mce_chrdev_state_lock);
+
+ if (xen_mce_chrdev_open_exclu ||
+ (xen_mce_chrdev_open_count && (file->f_flags & O_EXCL))) {
+ spin_unlock(&xen_mce_chrdev_state_lock);
+
+ return -EBUSY;
+ }
+
+ if (file->f_flags & O_EXCL)
+ xen_mce_chrdev_open_exclu = 1;
+ xen_mce_chrdev_open_count++;
+
+ spin_unlock(&xen_mce_chrdev_state_lock);
+
+ return nonseekable_open(inode, file);
+}
+
+static int xen_mce_chrdev_release(struct inode *inode, struct file *file)
+{
+ spin_lock(&xen_mce_chrdev_state_lock);
+
+ xen_mce_chrdev_open_count--;
+ xen_mce_chrdev_open_exclu = 0;
+
+ spin_unlock(&xen_mce_chrdev_state_lock);
+
+ return 0;
+}
+
+static ssize_t xen_mce_chrdev_read(struct file *filp, char __user *ubuf,
+ size_t usize, loff_t *off)
+{
+ char __user *buf = ubuf;
+ unsigned num;
+ int i, err;
+
+ spin_lock(&mcelog_lock);
+
+ num = xen_mcelog.next;
+
+ /* Only supports full reads right now */
+ err = -EINVAL;
+ if (*off != 0 || usize < XEN_MCE_LOG_LEN*sizeof(struct xen_mce))
+ goto out;
+
+ err = 0;
+ for (i = 0; i < num; i++) {
+ struct xen_mce *m = &xen_mcelog.entry[i];
+
+ err |= copy_to_user(buf, m, sizeof(*m));
+ buf += sizeof(*m);
+ }
+
+ memset(xen_mcelog.entry, 0, num * sizeof(struct xen_mce));
+ xen_mcelog.next = 0;
+
+ if (err)
+ err = -EFAULT;
+
+out:
+ spin_unlock(&mcelog_lock);
+
+ return err ? err : buf - ubuf;
+}
+
+static long xen_mce_chrdev_ioctl(struct file *f, unsigned int cmd,
+ unsigned long arg)
+{
+ int __user *p = (int __user *)arg;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ switch (cmd) {
+ case MCE_GET_RECORD_LEN:
+ return put_user(sizeof(struct xen_mce), p);
+ case MCE_GET_LOG_LEN:
+ return put_user(XEN_MCE_LOG_LEN, p);
+ case MCE_GETCLEAR_FLAGS: {
+ unsigned flags;
+
+ do {
+ flags = xen_mcelog.flags;
+ } while (cmpxchg(&xen_mcelog.flags, flags, 0) != flags);
+
+ return put_user(flags, p);
+ }
+ default:
+ return -ENOTTY;
+ }
+}
+
+static const struct file_operations xen_mce_chrdev_ops = {
+ .open = xen_mce_chrdev_open,
+ .release = xen_mce_chrdev_release,
+ .read = xen_mce_chrdev_read,
+ .unlocked_ioctl = xen_mce_chrdev_ioctl,
+ .llseek = no_llseek,
+};
+
+static struct miscdevice xen_mce_chrdev_device = {
+ MISC_MCELOG_MINOR,
+ "mcelog",
+ &xen_mce_chrdev_ops,
+};
+
+/*
+ * Caller should hold the mcelog_lock
+ */
+static void xen_mce_log(struct xen_mce *mce)
+{
+ unsigned entry;
+
+ entry = xen_mcelog.next;
+
+ /*
+ * When the buffer fills up discard new entries.
+ * Assume that the earlier errors are the more
+ * interesting ones:
+ */
+ if (entry >= XEN_MCE_LOG_LEN) {
+ set_bit(XEN_MCE_OVERFLOW,
+ (unsigned long *)&xen_mcelog.flags);
+ return;
+ }
+
+ memcpy(xen_mcelog.entry + entry, mce, sizeof(struct xen_mce));
+
+ xen_mcelog.next++;
+}
+
+static int convert_log(struct mc_info *mi)
+{
+ struct mcinfo_common *mic;
+ struct mcinfo_global *mc_global;
+ struct mcinfo_bank *mc_bank;
+ struct xen_mce m;
+ uint32_t i;
+
+ mic = NULL;
+ x86_mcinfo_lookup(&mic, mi, MC_TYPE_GLOBAL);
+ if (unlikely(!mic)) {
+ pr_warning(XEN_MCELOG "Failed to find global error info\n");
+ return -ENODEV;
+ }
+
+ memset(&m, 0, sizeof(struct xen_mce));
+
+ mc_global = (struct mcinfo_global *)mic;
+ m.mcgstatus = mc_global->mc_gstatus;
+ m.apicid = mc_global->mc_apicid;
+
+ for (i = 0; i < ncpus; i++)
+ if (g_physinfo[i].mc_apicid == m.apicid)
+ break;
+ if (unlikely(i == ncpus)) {
+ pr_warning(XEN_MCELOG "Failed to match cpu with apicid %d\n",
+ m.apicid);
+ return -ENODEV;
+ }
+
+ m.socketid = g_physinfo[i].mc_chipid;
+ m.cpu = m.extcpu = g_physinfo[i].mc_cpunr;
+ m.cpuvendor = (__u8)g_physinfo[i].mc_vendor;
+ m.mcgcap = g_physinfo[i].mc_msrvalues[__MC_MSR_MCGCAP].value;
+
+ mic = NULL;
+ x86_mcinfo_lookup(&mic, mi, MC_TYPE_BANK);
+ if (unlikely(!mic)) {
+ pr_warning(XEN_MCELOG "Fail to find bank error info\n");
+ return -ENODEV;
+ }
+
+ do {
+ if ((!mic) || (mic->size == 0) ||
+ (mic->type != MC_TYPE_GLOBAL &&
+ mic->type != MC_TYPE_BANK &&
+ mic->type != MC_TYPE_EXTENDED &&
+ mic->type != MC_TYPE_RECOVERY))
+ break;
+
+ if (mic->type == MC_TYPE_BANK) {
+ mc_bank = (struct mcinfo_bank *)mic;
+ m.misc = mc_bank->mc_misc;
+ m.status = mc_bank->mc_status;
+ m.addr = mc_bank->mc_addr;
+ m.tsc = mc_bank->mc_tsc;
+ m.bank = mc_bank->mc_bank;
+ m.finished = 1;
+ /*log this record*/
+ xen_mce_log(&m);
+ }
+ mic = x86_mcinfo_next(mic);
+ } while (1);
+
+ return 0;
+}
+
+static int mc_queue_handle(uint32_t flags)
+{
+ struct xen_mc mc_op;
+ int ret = 0;
+
+ mc_op.cmd = XEN_MC_fetch;
+ mc_op.interface_version = XEN_MCA_INTERFACE_VERSION;
+ set_xen_guest_handle(mc_op.u.mc_fetch.data, &g_mi);
+ do {
+ mc_op.u.mc_fetch.flags = flags;
+ ret = HYPERVISOR_mca(&mc_op);
+ if (ret) {
+ pr_err(XEN_MCELOG "Failed to fetch %s error log\n",
+ (flags == XEN_MC_URGENT) ?
+ "urgnet" : "nonurgent");
+ break;
+ }
+
+ if (mc_op.u.mc_fetch.flags & XEN_MC_NODATA ||
+ mc_op.u.mc_fetch.flags & XEN_MC_FETCHFAILED)
+ break;
+ else {
+ ret = convert_log(&g_mi);
+ if (ret)
+ pr_warning(XEN_MCELOG
+ "Failed to convert this error log, "
+ "continue acking it anyway\n");
+
+ mc_op.u.mc_fetch.flags = flags | XEN_MC_ACK;
+ ret = HYPERVISOR_mca(&mc_op);
+ if (ret) {
+ pr_err(XEN_MCELOG
+ "Failed to ack previous error log\n");
+ break;
+ }
+ }
+ } while (1);
+
+ return ret;
+}
+
+/* virq handler for machine check error info*/
+static irqreturn_t xen_mce_interrupt(int irq, void *dev_id)
+{
+ int err;
+ unsigned long tmp;
+
+ spin_lock_irqsave(&mcelog_lock, tmp);
+
+ /* urgent mc_info */
+ err = mc_queue_handle(XEN_MC_URGENT);
+ if (err)
+ pr_err(XEN_MCELOG
+ "Failed to handle urgent mc_info queue, "
+ "continue handling nonurgent mc_info queue anyway.\n");
+
+ /* nonurgent mc_info */
+ err = mc_queue_handle(XEN_MC_NONURGENT);
+ if (err)
+ pr_err(XEN_MCELOG
+ "Failed to handle nonurgent mc_info queue.\n");
+
+ spin_unlock_irqrestore(&mcelog_lock, tmp);
+
+ return IRQ_HANDLED;
+}
+
+static int bind_virq_for_mce(void)
+{
+ int ret;
+ struct xen_mc mc_op;
+
+ memset(&mc_op, 0, sizeof(struct xen_mc));
+
+ /* Fetch physical CPU Numbers */
+ mc_op.cmd = XEN_MC_physcpuinfo;
+ mc_op.interface_version = XEN_MCA_INTERFACE_VERSION;
+ set_xen_guest_handle(mc_op.u.mc_physcpuinfo.info, g_physinfo);
+ ret = HYPERVISOR_mca(&mc_op);
+ if (ret) {
+ pr_err(XEN_MCELOG "Failed to get CPU numbers\n");
+ return ret;
+ }
+
+ /* Fetch each CPU Physical Info for later reference*/
+ ncpus = mc_op.u.mc_physcpuinfo.ncpus;
+ g_physinfo = kcalloc(ncpus, sizeof(struct mcinfo_logical_cpu),
+ GFP_KERNEL);
+ if (!g_physinfo)
+ return -ENOMEM;
+ set_xen_guest_handle(mc_op.u.mc_physcpuinfo.info, g_physinfo);
+ ret = HYPERVISOR_mca(&mc_op);
+ if (ret) {
+ pr_err(XEN_MCELOG "Failed to get CPU info\n");
+ kfree(g_physinfo);
+ return ret;
+ }
+
+ ret = bind_virq_to_irqhandler(VIRQ_MCA, 0,
+ xen_mce_interrupt, 0, "mce", NULL);
+ if (ret < 0) {
+ pr_err(XEN_MCELOG "Failed to bind virq\n");
+ kfree(g_physinfo);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __init xen_late_init_mcelog(void)
+{
+ /* Only DOM0 is responsible for MCE logging */
+ if (xen_initial_domain()) {
+ /* register character device /dev/mcelog for xen mcelog */
+ if (misc_register(&xen_mce_chrdev_device))
+ return -ENODEV;
+ return bind_virq_for_mce();
+ }
+
+ return -ENODEV;
+}
+device_initcall(xen_late_init_mcelog);
#define MPT_MINOR 220
#define MPT2SAS_MINOR 221
#define UINPUT_MINOR 223
+#define MISC_MCELOG_MINOR 227
#define HPET_MINOR 228
#define FUSE_MINOR 229
#define KVM_MINOR 232
--- /dev/null
+/******************************************************************************
+ * arch-x86/mca.h
+ * Guest OS machine check interface to x86 Xen.
+ *
+ * Contributed by Advanced Micro Devices, Inc.
+ * Author: Christoph Egger <Christoph.Egger@amd.com>
+ *
+ * Updated by Intel Corporation
+ * Author: Liu, Jinsong <jinsong.liu@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __XEN_PUBLIC_ARCH_X86_MCA_H__
+#define __XEN_PUBLIC_ARCH_X86_MCA_H__
+
+/* Hypercall */
+#define __HYPERVISOR_mca __HYPERVISOR_arch_0
+
+#define XEN_MCA_INTERFACE_VERSION 0x01ecc003
+
+/* IN: Dom0 calls hypercall to retrieve nonurgent error log entry */
+#define XEN_MC_NONURGENT 0x1
+/* IN: Dom0 calls hypercall to retrieve urgent error log entry */
+#define XEN_MC_URGENT 0x2
+/* IN: Dom0 acknowledges previosly-fetched error log entry */
+#define XEN_MC_ACK 0x4
+
+/* OUT: All is ok */
+#define XEN_MC_OK 0x0
+/* OUT: Domain could not fetch data. */
+#define XEN_MC_FETCHFAILED 0x1
+/* OUT: There was no machine check data to fetch. */
+#define XEN_MC_NODATA 0x2
+
+#ifndef __ASSEMBLY__
+/* vIRQ injected to Dom0 */
+#define VIRQ_MCA VIRQ_ARCH_0
+
+/*
+ * mc_info entry types
+ * mca machine check info are recorded in mc_info entries.
+ * when fetch mca info, it can use MC_TYPE_... to distinguish
+ * different mca info.
+ */
+#define MC_TYPE_GLOBAL 0
+#define MC_TYPE_BANK 1
+#define MC_TYPE_EXTENDED 2
+#define MC_TYPE_RECOVERY 3
+
+struct mcinfo_common {
+ uint16_t type; /* structure type */
+ uint16_t size; /* size of this struct in bytes */
+};
+
+#define MC_FLAG_CORRECTABLE (1 << 0)
+#define MC_FLAG_UNCORRECTABLE (1 << 1)
+#define MC_FLAG_RECOVERABLE (1 << 2)
+#define MC_FLAG_POLLED (1 << 3)
+#define MC_FLAG_RESET (1 << 4)
+#define MC_FLAG_CMCI (1 << 5)
+#define MC_FLAG_MCE (1 << 6)
+
+/* contains x86 global mc information */
+struct mcinfo_global {
+ struct mcinfo_common common;
+
+ uint16_t mc_domid; /* running domain at the time in error */
+ uint16_t mc_vcpuid; /* virtual cpu scheduled for mc_domid */
+ uint32_t mc_socketid; /* physical socket of the physical core */
+ uint16_t mc_coreid; /* physical impacted core */
+ uint16_t mc_core_threadid; /* core thread of physical core */
+ uint32_t mc_apicid;
+ uint32_t mc_flags;
+ uint64_t mc_gstatus; /* global status */
+};
+
+/* contains x86 bank mc information */
+struct mcinfo_bank {
+ struct mcinfo_common common;
+
+ uint16_t mc_bank; /* bank nr */
+ uint16_t mc_domid; /* domain referenced by mc_addr if valid */
+ uint64_t mc_status; /* bank status */
+ uint64_t mc_addr; /* bank address */
+ uint64_t mc_misc;
+ uint64_t mc_ctrl2;
+ uint64_t mc_tsc;
+};
+
+struct mcinfo_msr {
+ uint64_t reg; /* MSR */
+ uint64_t value; /* MSR value */
+};
+
+/* contains mc information from other or additional mc MSRs */
+struct mcinfo_extended {
+ struct mcinfo_common common;
+ uint32_t mc_msrs; /* Number of msr with valid values. */
+ /*
+ * Currently Intel extended MSR (32/64) include all gp registers
+ * and E(R)FLAGS, E(R)IP, E(R)MISC, up to 11/19 of them might be
+ * useful at present. So expand this array to 16/32 to leave room.
+ */
+ struct mcinfo_msr mc_msr[sizeof(void *) * 4];
+};
+
+/* Recovery Action flags. Giving recovery result information to DOM0 */
+
+/* Xen takes successful recovery action, the error is recovered */
+#define REC_ACTION_RECOVERED (0x1 << 0)
+/* No action is performed by XEN */
+#define REC_ACTION_NONE (0x1 << 1)
+/* It's possible DOM0 might take action ownership in some case */
+#define REC_ACTION_NEED_RESET (0x1 << 2)
+
+/*
+ * Different Recovery Action types, if the action is performed successfully,
+ * REC_ACTION_RECOVERED flag will be returned.
+ */
+
+/* Page Offline Action */
+#define MC_ACTION_PAGE_OFFLINE (0x1 << 0)
+/* CPU offline Action */
+#define MC_ACTION_CPU_OFFLINE (0x1 << 1)
+/* L3 cache disable Action */
+#define MC_ACTION_CACHE_SHRINK (0x1 << 2)
+
+/*
+ * Below interface used between XEN/DOM0 for passing XEN's recovery action
+ * information to DOM0.
+ */
+struct page_offline_action {
+ /* Params for passing the offlined page number to DOM0 */
+ uint64_t mfn;
+ uint64_t status;
+};
+
+struct cpu_offline_action {
+ /* Params for passing the identity of the offlined CPU to DOM0 */
+ uint32_t mc_socketid;
+ uint16_t mc_coreid;
+ uint16_t mc_core_threadid;
+};
+
+#define MAX_UNION_SIZE 16
+struct mcinfo_recovery {
+ struct mcinfo_common common;
+ uint16_t mc_bank; /* bank nr */
+ uint8_t action_flags;
+ uint8_t action_types;
+ union {
+ struct page_offline_action page_retire;
+ struct cpu_offline_action cpu_offline;
+ uint8_t pad[MAX_UNION_SIZE];
+ } action_info;
+};
+
+
+#define MCINFO_MAXSIZE 768
+struct mc_info {
+ /* Number of mcinfo_* entries in mi_data */
+ uint32_t mi_nentries;
+ uint32_t flags;
+ uint64_t mi_data[(MCINFO_MAXSIZE - 1) / 8];
+};
+DEFINE_GUEST_HANDLE_STRUCT(mc_info);
+
+#define __MC_MSR_ARRAYSIZE 8
+#define __MC_MSR_MCGCAP 0
+#define __MC_NMSRS 1
+#define MC_NCAPS 7
+struct mcinfo_logical_cpu {
+ uint32_t mc_cpunr;
+ uint32_t mc_chipid;
+ uint16_t mc_coreid;
+ uint16_t mc_threadid;
+ uint32_t mc_apicid;
+ uint32_t mc_clusterid;
+ uint32_t mc_ncores;
+ uint32_t mc_ncores_active;
+ uint32_t mc_nthreads;
+ uint32_t mc_cpuid_level;
+ uint32_t mc_family;
+ uint32_t mc_vendor;
+ uint32_t mc_model;
+ uint32_t mc_step;
+ char mc_vendorid[16];
+ char mc_brandid[64];
+ uint32_t mc_cpu_caps[MC_NCAPS];
+ uint32_t mc_cache_size;
+ uint32_t mc_cache_alignment;
+ uint32_t mc_nmsrvals;
+ struct mcinfo_msr mc_msrvalues[__MC_MSR_ARRAYSIZE];
+};
+DEFINE_GUEST_HANDLE_STRUCT(mcinfo_logical_cpu);
+
+/*
+ * Prototype:
+ * uint32_t x86_mcinfo_nentries(struct mc_info *mi);
+ */
+#define x86_mcinfo_nentries(_mi) \
+ ((_mi)->mi_nentries)
+/*
+ * Prototype:
+ * struct mcinfo_common *x86_mcinfo_first(struct mc_info *mi);
+ */
+#define x86_mcinfo_first(_mi) \
+ ((struct mcinfo_common *)(_mi)->mi_data)
+/*
+ * Prototype:
+ * struct mcinfo_common *x86_mcinfo_next(struct mcinfo_common *mic);
+ */
+#define x86_mcinfo_next(_mic) \
+ ((struct mcinfo_common *)((uint8_t *)(_mic) + (_mic)->size))
+
+/*
+ * Prototype:
+ * void x86_mcinfo_lookup(void *ret, struct mc_info *mi, uint16_t type);
+ */
+static inline void x86_mcinfo_lookup(struct mcinfo_common **ret,
+ struct mc_info *mi, uint16_t type)
+{
+ uint32_t i;
+ struct mcinfo_common *mic;
+ bool found = 0;
+
+ if (!ret || !mi)
+ return;
+
+ mic = x86_mcinfo_first(mi);
+ for (i = 0; i < x86_mcinfo_nentries(mi); i++) {
+ if (mic->type == type) {
+ found = 1;
+ break;
+ }
+ mic = x86_mcinfo_next(mic);
+ }
+
+ *ret = found ? mic : NULL;
+}
+
+/*
+ * Fetch machine check data from hypervisor.
+ */
+#define XEN_MC_fetch 1
+struct xen_mc_fetch {
+ /*
+ * IN: XEN_MC_NONURGENT, XEN_MC_URGENT,
+ * XEN_MC_ACK if ack'king an earlier fetch
+ * OUT: XEN_MC_OK, XEN_MC_FETCHAILED, XEN_MC_NODATA
+ */
+ uint32_t flags;
+ uint32_t _pad0;
+ /* OUT: id for ack, IN: id we are ack'ing */
+ uint64_t fetch_id;
+
+ /* OUT variables. */
+ GUEST_HANDLE(mc_info) data;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xen_mc_fetch);
+
+
+/*
+ * This tells the hypervisor to notify a DomU about the machine check error
+ */
+#define XEN_MC_notifydomain 2
+struct xen_mc_notifydomain {
+ /* IN variables */
+ uint16_t mc_domid; /* The unprivileged domain to notify */
+ uint16_t mc_vcpuid; /* The vcpu in mc_domid to notify */
+
+ /* IN/OUT variables */
+ uint32_t flags;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xen_mc_notifydomain);
+
+#define XEN_MC_physcpuinfo 3
+struct xen_mc_physcpuinfo {
+ /* IN/OUT */
+ uint32_t ncpus;
+ uint32_t _pad0;
+ /* OUT */
+ GUEST_HANDLE(mcinfo_logical_cpu) info;
+};
+
+#define XEN_MC_msrinject 4
+#define MC_MSRINJ_MAXMSRS 8
+struct xen_mc_msrinject {
+ /* IN */
+ uint32_t mcinj_cpunr; /* target processor id */
+ uint32_t mcinj_flags; /* see MC_MSRINJ_F_* below */
+ uint32_t mcinj_count; /* 0 .. count-1 in array are valid */
+ uint32_t _pad0;
+ struct mcinfo_msr mcinj_msr[MC_MSRINJ_MAXMSRS];
+};
+
+/* Flags for mcinj_flags above; bits 16-31 are reserved */
+#define MC_MSRINJ_F_INTERPOSE 0x1
+
+#define XEN_MC_mceinject 5
+struct xen_mc_mceinject {
+ unsigned int mceinj_cpunr; /* target processor id */
+};
+
+struct xen_mc {
+ uint32_t cmd;
+ uint32_t interface_version; /* XEN_MCA_INTERFACE_VERSION */
+ union {
+ struct xen_mc_fetch mc_fetch;
+ struct xen_mc_notifydomain mc_notifydomain;
+ struct xen_mc_physcpuinfo mc_physcpuinfo;
+ struct xen_mc_msrinject mc_msrinject;
+ struct xen_mc_mceinject mc_mceinject;
+ } u;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xen_mc);
+
+/* Fields are zero when not available */
+struct xen_mce {
+ __u64 status;
+ __u64 misc;
+ __u64 addr;
+ __u64 mcgstatus;
+ __u64 ip;
+ __u64 tsc; /* cpu time stamp counter */
+ __u64 time; /* wall time_t when error was detected */
+ __u8 cpuvendor; /* cpu vendor as encoded in system.h */
+ __u8 inject_flags; /* software inject flags */
+ __u16 pad;
+ __u32 cpuid; /* CPUID 1 EAX */
+ __u8 cs; /* code segment */
+ __u8 bank; /* machine check bank */
+ __u8 cpu; /* cpu number; obsolete; use extcpu now */
+ __u8 finished; /* entry is valid */
+ __u32 extcpu; /* linux cpu number that detected the error */
+ __u32 socketid; /* CPU socket ID */
+ __u32 apicid; /* CPU initial apic ID */
+ __u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
+};
+
+/*
+ * This structure contains all data related to the MCE log. Also
+ * carries a signature to make it easier to find from external
+ * debugging tools. Each entry is only valid when its finished flag
+ * is set.
+ */
+
+#define XEN_MCE_LOG_LEN 32
+
+struct xen_mce_log {
+ char signature[12]; /* "MACHINECHECK" */
+ unsigned len; /* = XEN_MCE_LOG_LEN */
+ unsigned next;
+ unsigned flags;
+ unsigned recordlen; /* length of struct xen_mce */
+ struct xen_mce entry[XEN_MCE_LOG_LEN];
+};
+
+#define XEN_MCE_OVERFLOW 0 /* bit 0 in flags means overflow */
+
+#define XEN_MCE_LOG_SIGNATURE "MACHINECHECK"
+
+#define MCE_GET_RECORD_LEN _IOR('M', 1, int)
+#define MCE_GET_LOG_LEN _IOR('M', 2, int)
+#define MCE_GETCLEAR_FLAGS _IOR('M', 3, int)
+
+#endif /* __ASSEMBLY__ */
+#endif /* __XEN_PUBLIC_ARCH_X86_MCA_H__ */
projects / users / hch / xfs.git / commitdiff