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hv: allocate vpid based on vm_id and vcpu_id mapping

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Currently vpid is not released in reset_vcpu() hence the vpid resource
could be exhausted easily if guests are re-launched.

This patch assigns vpid according to the fixed mapping of runtime vm_id
and vcpu_id to guarantee the uniqueness of vpid.

Tracked-On: #2700
Signed-off-by: Zide Chen <zide.chen@intel.com>
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Zide Chen
2019-04-18 11:20:54 -07:00
committed by wenlingz
parent 9673f3dad4
commit a3207b2bc2
6 changed files with 13 additions and 41 deletions
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5
hypervisor/arch/x86/static_checks.c
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@@ -16,6 +16,11 @@
#define CTASSERT(expr) \
typedef int32_t CAT_(CTA_DummyType,__LINE__)[(expr) ? 1 : -1]
/* This is to make sure the 16 bits vpid won't overflow */
#if ((CONFIG_MAX_VM_NUM * CONFIG_MAX_VCPUS_PER_VM) > 0xffffU)
#error "VM number or VCPU number are too big"
#endif
/* Build time sanity checks to make sure hard-coded offset
* is matching the actual offset!
*/