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HV: add hypercall to monitor UOS PTdev intr status

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The hypercall can be used by SOS/DM to monitor UOS
pass-thru devices' interrupt data; and if an "interrupt
storm" happens in UOS, it can be used to delay the UOS
PTdev interrupt's injection for sometime.

The two functions are implemented by one hypercall with
two sub-commands, and with the data/params in the buffer.

Tracked-On: #866
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Minggui Cao
2018-09-13 16:51:34 +08:00
committed by lijinxia
parent 918403f925
commit d123083fa9
5 changed files with 82 additions and 0 deletions
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20
hypervisor/include/public/acrn_common.h
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@@ -453,6 +453,26 @@ enum pm_cmd_type {
PMCMD_GET_CX_DATA,
};
/**
* @brief Info to get a VM interrupt count data
*
* the parameter for HC_VM_INTR_MONITOR hypercall
*/
#define MAX_PTDEV_NUM 24
struct acrn_intr_monitor {
/** sub command for intr monitor */
uint32_t cmd;
/** the count of this buffer to save */
uint32_t buf_cnt;
/** the buffer which save each interrupt count */
uint64_t buffer[MAX_PTDEV_NUM * 2];
} __aligned(8);
/** cmd for intr monitor **/
#define INTR_CMD_GET_DATA 0U
#define INTR_CMD_DELAY_INT 1U
/**
* @}
*/