github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-24 02:08:04 +00:00
Code Issues Projects Releases Wiki Activity

hv: keylocker: host keylocker iwkey context switch

Browse Source 
Different vCPU may have different IWKeys. Hypervisor need do the iwkey
context switch.

This patch introduce a load_iwkey() function to do that. Switches the
host iwkey when the switch_in vCPU satisfies:
  1) keylocker feature enabled
  2) Different from the current loaded one.

Two opportunities to do the load_iwkey():
  1) Guest enables CR4.KL bit.
  2) vCPU thread context switch.

load_iwkey() costs ~600 cycles when do the load IWKey action.

Tracked-On: #5695
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Shuo A Liu
2021-02-01 18:15:20 +08:00
committed by wenlingz
parent c11c07e0fe
commit 38cd5b481d
6 changed files with 37 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
hypervisor/include/arch/x86/guest/vcpu.h
View File

@@ -602,6 +602,7 @@ struct acrn_vcpu *get_ever_run_vcpu(uint16_t pcpu_id);
void save_xsave_area(struct acrn_vcpu *vcpu, struct ext_context *ectx);
void rstore_xsave_area(const struct acrn_vcpu *vcpu, const struct ext_context *ectx);
void load_iwkey(struct acrn_vcpu *vcpu);
/**
* @brief create a vcpu for the target vm