[PATCH 08/19] x86/mce: set mcinfo_comm.type and .size in x86_mcinfo_reserve()

[Haozhong Zhang <haozhong.zhang@intel.com>]

All existing calls to x86_mcinfo_reserve() are followed by statements
that set the size and the type of the reserved space, so move them into
x86_mcinfo_reserve() to simplify the code.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
---
Cc: Christoph Egger <chegger@amazon.de>
Cc: Liu Jinsong <jinsong.liu@alibaba-inc.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
---
 xen/arch/x86/cpu/mcheck/mcaction.c  |  4 +---
 xen/arch/x86/cpu/mcheck/mce.c       | 16 ++++++++--------
 xen/arch/x86/cpu/mcheck/mce.h       |  2 +-
 xen/arch/x86/cpu/mcheck/mce_amd.c   |  4 +---
 xen/arch/x86/cpu/mcheck/mce_intel.c |  6 +-----
 5 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/xen/arch/x86/cpu/mcheck/mcaction.c b/xen/arch/x86/cpu/mcheck/mcaction.c
index 9cf2499..cc90e7c 100644
--- a/xen/arch/x86/cpu/mcheck/mcaction.c
+++ b/xen/arch/x86/cpu/mcheck/mcaction.c
@@ -13,14 +13,12 @@ mci_action_add_pageoffline(int bank, struct mc_info *mi,
     if (!mi)
         return NULL;
 
-    rec = x86_mcinfo_reserve(mi, sizeof(*rec));
+    rec = x86_mcinfo_reserve(mi, sizeof(*rec), MC_TYPE_RECOVERY);
     if (!rec) {
         mi->flags |= MCINFO_FLAGS_UNCOMPLETE;
         return NULL;
     }
 
-    rec->common.type = MC_TYPE_RECOVERY;
-    rec->common.size = sizeof(*rec);
     rec->mc_bank = bank;
     rec->action_types = MC_ACTION_PAGE_OFFLINE;
     rec->action_info.page_retire.mfn = mfn;
diff --git a/xen/arch/x86/cpu/mcheck/mce.c b/xen/arch/x86/cpu/mcheck/mce.c
index f682520..28bf579 100644
--- a/xen/arch/x86/cpu/mcheck/mce.c
+++ b/xen/arch/x86/cpu/mcheck/mce.c
@@ -204,7 +204,7 @@ static void mca_init_bank(enum mca_source who,
     if (!mi)
         return;
 
-    mib = x86_mcinfo_reserve(mi, sizeof(*mib));
+    mib = x86_mcinfo_reserve(mi, sizeof(*mib), MC_TYPE_BANK);
     if (!mib)
     {
         mi->flags |= MCINFO_FLAGS_UNCOMPLETE;
@@ -213,8 +213,6 @@ static void mca_init_bank(enum mca_source who,
 
     mib->mc_status = mca_rdmsr(MSR_IA32_MCx_STATUS(bank));
 
-    mib->common.type = MC_TYPE_BANK;
-    mib->common.size = sizeof (struct mcinfo_bank);
     mib->mc_bank = bank;
 
     if (mib->mc_status & MCi_STATUS_MISCV)
@@ -250,8 +248,6 @@ static int mca_init_global(uint32_t flags, struct mcinfo_global *mig)
     struct domain *d;
 
     /* Set global information */
-    mig->common.type = MC_TYPE_GLOBAL;
-    mig->common.size = sizeof (struct mcinfo_global);
     status = mca_rdmsr(MSR_IA32_MCG_STATUS);
     mig->mc_gstatus = status;
     mig->mc_domid = mig->mc_vcpuid = -1;
@@ -351,7 +347,7 @@ mcheck_mca_logout(enum mca_source who, struct mca_banks *bankmask,
             if ( (mctc = mctelem_reserve(which)) != NULL ) {
                 mci = mctelem_dataptr(mctc);
                 mcinfo_clear(mci);
-                mig = x86_mcinfo_reserve(mci, sizeof(*mig));
+                mig = x86_mcinfo_reserve(mci, sizeof(*mig), MC_TYPE_GLOBAL);
                 /* mc_info should at least hold up the global information */
                 ASSERT(mig);
                 mca_init_global(mc_flags, mig);
@@ -804,7 +800,7 @@ static void mcinfo_clear(struct mc_info *mi)
     x86_mcinfo_nentries(mi) = 0;
 }
 
-void *x86_mcinfo_reserve(struct mc_info *mi, int size)
+void *x86_mcinfo_reserve(struct mc_info *mi, uint16_t size, uint16_t type)
 {
     int i;
     unsigned long end1, end2;
@@ -831,7 +827,11 @@ void *x86_mcinfo_reserve(struct mc_info *mi, int size)
     /* there's enough space. add entry. */
     x86_mcinfo_nentries(mi)++;
 
-    return memset(mic_index, 0, size);
+    memset(mic_index, 0, size);
+    mic_index->size = size;
+    mic_index->type = type;
+
+    return mic_index;
 }
 
 static void x86_mcinfo_apei_save(
diff --git a/xen/arch/x86/cpu/mcheck/mce.h b/xen/arch/x86/cpu/mcheck/mce.h
index 56877c1..2f4e7a4 100644
--- a/xen/arch/x86/cpu/mcheck/mce.h
+++ b/xen/arch/x86/cpu/mcheck/mce.h
@@ -146,7 +146,7 @@ typedef struct mcinfo_extended *(*x86_mce_callback_t)
     (struct mc_info *, uint16_t, uint64_t);
 extern void x86_mce_callback_register(x86_mce_callback_t);
 
-void *x86_mcinfo_reserve(struct mc_info *mi, int size);
+void *x86_mcinfo_reserve(struct mc_info *mi, uint16_t size, uint16_t type);
 void x86_mcinfo_dump(struct mc_info *mi);
 
 static inline int mce_vendor_bank_msr(const struct vcpu *v, uint32_t msr)
diff --git a/xen/arch/x86/cpu/mcheck/mce_amd.c b/xen/arch/x86/cpu/mcheck/mce_amd.c
index 599e465..fe51be9 100644
--- a/xen/arch/x86/cpu/mcheck/mce_amd.c
+++ b/xen/arch/x86/cpu/mcheck/mce_amd.c
@@ -218,15 +218,13 @@ amd_f10_handler(struct mc_info *mi, uint16_t bank, uint64_t status)
     if ( !(status & MCi_STATUS_MISCV) )
         return NULL;
 
-    mc_ext = x86_mcinfo_reserve(mi, sizeof(*mc_ext));
+    mc_ext = x86_mcinfo_reserve(mi, sizeof(*mc_ext), MC_TYPE_EXTENDED);
     if ( !mc_ext )
     {
         mi->flags |= MCINFO_FLAGS_UNCOMPLETE;
         return NULL;
     }
 
-    mc_ext->common.type = MC_TYPE_EXTENDED;
-    mc_ext->common.size = sizeof(*mc_ext);
     mc_ext->mc_msrs = 3;
 
     mc_ext->mc_msr[0].reg = MSR_F10_MC4_MISC1;
diff --git a/xen/arch/x86/cpu/mcheck/mce_intel.c b/xen/arch/x86/cpu/mcheck/mce_intel.c
index b5ee8b8..9e5ee3d 100644
--- a/xen/arch/x86/cpu/mcheck/mce_intel.c
+++ b/xen/arch/x86/cpu/mcheck/mce_intel.c
@@ -200,17 +200,13 @@ intel_get_extended_msrs(struct mcinfo_global *mig, struct mc_info *mi)
             !(mig->mc_gstatus & MCG_STATUS_EIPV))
         return NULL;
 
-    mc_ext = x86_mcinfo_reserve(mi, sizeof(*mc_ext));
+    mc_ext = x86_mcinfo_reserve(mi, sizeof(*mc_ext), MC_TYPE_EXTENDED);
     if (!mc_ext)
     {
         mi->flags |= MCINFO_FLAGS_UNCOMPLETE;
         return NULL;
     }
 
-    /* this function will called when CAP(9).MCG_EXT_P = 1 */
-    mc_ext->common.type = MC_TYPE_EXTENDED;
-    mc_ext->common.size = sizeof(struct mcinfo_extended);
-
     for (i = MSR_IA32_MCG_EAX; i <= MSR_IA32_MCG_R15; i++)
         intel_get_extended_msr(mc_ext, i);
 
-- 
2.10.1


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