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DM: Get max vcpu per vm from HV instead of hardcode

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This patch tries to fetch max vcpu per vm from HV instead of hardcode in DM.

Tracked-On: #3116
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
This commit is contained in:
Kaige Fu 2019-05-09 11:40:43 +00:00 committed by ACRN System Integration
parent 86f5993bc9
commit 356bf18491
1 changed files with 15 additions and 4 deletions
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19
devicemodel/core/main.c
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@ -38,6 +38,7 @@
#include <sysexits.h>
#include <stdbool.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include "vmmapi.h"
#include "sw_load.h"
@ -695,10 +696,20 @@ vm_loop(struct vmctx *ctx)
static int
num_vcpus_allowed(struct vmctx *ctx)
{
/* TODO: add ioctl to get gerneric information including
* virtual cpus, now hardcode
*/
return VM_MAXCPU;
int err;
uint16_t max_cpu;
struct platform_info info;
err = ioctl(ctx->fd, IC_GET_PLATFORM_INFO, &info);
if (err != 0) {
/* Use VM_MAXCPU as default */
max_cpu = VM_MAXCPU;
printf("Failed to get max vcpu from HV, use default: %d. errno(%d)\n", max_cpu, err);
} else {
max_cpu = info.max_vcpus_per_vm;
}
return max_cpu;
}
static void