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hv: vCAT: expose CAT capabilities to vCAT-enabled VM

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Expose CAT feature to vCAT VM by reporting the number of
cache ways/CLOSIDs via the 04H/10H cpuid instructions, so that the
VM can take advantage of CAT to prioritize and partition cache
resource for its own tasks.

Add the vcat_pcbm_to_vcbm() function to map pcbm to vcbm

Tracked-On: #5917
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
This commit is contained in:
dongshen
2021-08-19 13:28:44 -07:00
committed by wenlingz
parent 77ae989379
commit be855d2352
3 changed files with 188 additions and 0 deletions
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5
hypervisor/include/arch/x86/asm/guest/vcat.h
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@@ -9,7 +9,12 @@
#include <asm/guest/vm.h>
bool is_l2_vcat_configured(const struct acrn_vm *vm);
bool is_l3_vcat_configured(const struct acrn_vm *vm);
uint16_t vcat_get_vcbm_len(const struct acrn_vm *vm, int res);
void init_vcat_msrs(struct acrn_vcpu *vcpu);
uint16_t vcat_get_num_vclosids(const struct acrn_vm *vm);
uint64_t vcat_pcbm_to_vcbm(const struct acrn_vm *vm, uint64_t pcbm, int res);
#endif /* VCAT_H_ */