Commit Graph

3 Commits

Author SHA1 Message Date
dongshen
3ab50f2ef5 hv: vCAT: implementing the vCAT MSRs read handlers
Implement the read_vcbm() and read_vclosid() functions to handle the MSR_IA32_PQR_ASSOC
and MSR_IA32_type_MASK_n vCAT MSRs read request.

Tracked-On: #5917
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
2021-10-28 19:12:29 +08:00
dongshen
be855d2352 hv: vCAT: expose CAT capabilities to vCAT-enabled VM
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>
2021-10-28 19:12:29 +08:00
dongshen
77ae989379 hv: vCAT: initialize vCAT MSRs during vmcs init
Initialize vCBM MSRs

Initialize vCLOSID MSR

Add some vCAT functions:
 Retrieve max_vcbm and max_pcbm
 Check if vCAT is configured or not for the VM
 Map vclosid to pclosid
 write_vclosid: vCLOSID MSR write handler
 write_vcbm: vCBM MSR write handler

Tracked-On: #5917
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
2021-10-28 19:12:29 +08:00