Clean up MCA MSR virtualization and vMCE injection

Remove all virtual MCE related work into a seperated file.
It also try to do some clean-up on the vMCE, including:
a) renmae some function name like mce_init_msr/mce_rdmsr to be
   vmce_init_msr/vmce_rdmsr to make it more straightforward,
b) make the vmca_msrs be a pointer in arch_domain,
    to decrease arch_domain's size
c) extract per-bank MCA MSR access to be seperated function
    (bank_mce_wrmsr/bank_mce_rdmsr) to make it be a bit cleaner.
d) A new file xen/include/asm-x86/mce.h  is added for vmce related
header.

Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/xen/include/asm-x86/mce.h b/xen/include/asm-x86/mce.h
new file mode 100644
index 0000000000..d140803222
--- /dev/null
+++ b/xen/include/asm-x86/mce.h
@@ -0,0 +1,36 @@
+#include <xen/types.h>
+#include <public/arch-x86/xen-mca.h>
+#ifndef _XEN_X86_MCE_H
+#define _XEN_X86_MCE_H
+/* Define for GUEST MCA handling */
+#define MAX_NR_BANKS 30
+
+/* This entry is for recording bank nodes for the impacted domain,
+ * put into impact_header list. */
+struct bank_entry {
+    struct list_head list;
+    uint16_t bank;
+    uint64_t mci_status;
+    uint64_t mci_addr;
+    uint64_t mci_misc;
+};
+
+struct domain_mca_msrs
+{
+    /* Guest should not change below values after DOM boot up */
+    uint64_t mcg_cap;
+    uint64_t mcg_ctl;
+    uint64_t mcg_status;
+    uint64_t *mci_ctl;
+    uint16_t nr_injection;
+    struct list_head impact_header;
+    spinlock_t lock;
+};
+
+#define dom_vmce(x)   ((x)->arch.vmca_msrs)
+
+/* Guest vMCE MSRs virtualization */
+extern int vmce_init_msr(struct domain *d);
+extern int vmce_wrmsr(uint32_t msr, uint64_t val);
+extern int vmce_rdmsr(uint32_t msr, uint64_t *val);
+#endif