Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
arch/ia64/kernel/salinfo.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
include/asm-ia64/sal.h | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 0 deletions(-)
diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index 779c3cc..91bc631 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -378,6 +378,25 @@ salinfo_log_open(struct inode *inode, struct file *file)
data->open = 0;
return -ENOMEM;
}
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ ia64_mca_xencomm_t *entry;
+ unsigned long flags;
+
+ entry = vmalloc(sizeof(ia64_mca_xencomm_t));
+ if (!entry) {
+ data->open = 0;
+ vfree(data->log_buffer);
+ return -ENOMEM;
+ }
+ entry->record = data->log_buffer;
+ entry->handle = xencomm_map(data->log_buffer,
+ ia64_sal_get_state_info_size(data->type));
+ spin_lock_irqsave(&ia64_mca_xencomm_lock, flags);
+ list_add(&entry->list, &ia64_mca_xencomm_list);
+ spin_unlock_irqrestore(&ia64_mca_xencomm_lock, flags);
+ }
+#endif
return 0;
}
@@ -389,6 +408,31 @@ salinfo_log_release(struct inode *inode, struct file *file)
struct salinfo_data *data = entry->data;
if (data->state == STATE_NO_DATA) {
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ struct list_head *pos, *n;
+ ia64_mca_xencomm_t *found_entry = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ia64_mca_xencomm_lock, flags);
+ list_for_each_safe(pos, n, &ia64_mca_xencomm_list) {
+ ia64_mca_xencomm_t *entry;
+
+ entry = list_entry(pos, ia64_mca_xencomm_t,
+ list);
+ if (entry->record == data->log_buffer) {
+ list_del(&entry->list);
+ found_entry = entry;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&ia64_mca_xencomm_lock, flags);
+ if (found_entry) {
+ xencomm_free(found_entry->handle);
+ vfree(found_entry);
+ }
+ }
+#endif
vfree(data->log_buffer);
vfree(data->oemdata);
data->log_buffer = NULL;
diff --git a/include/asm-ia64/sal.h b/include/asm-ia64/sal.h
index 2251118..3c20a58 100644
--- a/include/asm-ia64/sal.h
+++ b/include/asm-ia64/sal.h
@@ -42,6 +42,9 @@
#include <asm/pal.h>
#include <asm/system.h>
#include <asm/fpu.h>
+#ifdef CONFIG_XEN
+#include <asm/xen/xencomm.h>
+#endif
extern spinlock_t sal_lock;
@@ -679,10 +682,43 @@ ia64_sal_clear_state_info (u64 sal_info_type)
/* Get the processor and platform information logged by SAL with respect to the machine
* state at the time of the MCAs, INITs, CMCs, or CPEs.
*/
+#ifdef CONFIG_XEN
+static inline u64 ia64_sal_get_state_info_size (u64 sal_info_type);
+typedef struct ia64_mca_xencomm_t {
+ void *record;
+ struct xencomm_handle *handle;
+ struct list_head list;
+} ia64_mca_xencomm_t;
+extern struct list_head ia64_mca_xencomm_list;
+extern spinlock_t ia64_mca_xencomm_lock;
+#endif
+
static inline u64
ia64_sal_get_state_info (u64 sal_info_type, u64 *sal_info)
{
struct ia64_sal_retval isrv;
+#ifdef CONFIG_XEN
+ if (is_running_on_xen()) {
+ ia64_mca_xencomm_t *entry;
+ struct xencomm_handle *desc = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ia64_mca_xencomm_lock, flags);
+ list_for_each_entry(entry, &ia64_mca_xencomm_list, list) {
+ if (entry->record == sal_info) {
+ desc = entry->handle;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&ia64_mca_xencomm_lock, flags);
+
+ if (desc == NULL)
+ return 0;
+
+ SAL_CALL_REENTRANT(isrv, SAL_GET_STATE_INFO, sal_info_type, 0,
+ desc, 0, 0, 0, 0);
+ } else
+#endif
SAL_CALL_REENTRANT(isrv, SAL_GET_STATE_INFO, sal_info_type, 0,
sal_info, 0, 0, 0, 0);
if (isrv.status)
--
1.5.3
--
yamahata
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