MPAMVPMV

Valid bits for virtual PARTID mapping entries. Each bit m corresponds to virtual PARTID mapping entry m in the MPAMVPM<n>_EL2 registers where n = m >> 2.

Configuration

This register is present only when FEAT_MPAM is implemented and MPAMIDR_EL1.HAS_HCR == 1. Otherwise, direct accesses to MPAMVPMV_EL2 are UNDEFINED.

This register has no effect if EL2 is not enabled in the current Security state.

Attributes

Field descriptions

Bits [63:32]

VPM_V<m>, bit [m], for m = 31 to 0

Accessing MPAMVPMV_EL2

Accesses to this register use the following encodings in the System register encoding space:

MRS <Xt>, MPAMVPMV_EL2

op0	op1	CRn	CRm	op2
0b11	0b100	0b1010	0b0100	0b001

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EffectiveHCR_EL2_NVx() IN {'1x1'} then X[t, 64] = NVMem[0x938]; elsif EffectiveHCR_EL2_NVx() IN {'xx1'} then if HaveEL(EL3) && MPAM3_EL3.TRAPLOWER == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else AArch64.SystemAccessTrap(EL2, 0x18); else UNDEFINED; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && MPAM3_EL3.TRAPLOWER == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = MPAMVPMV_EL2; elsif PSTATE.EL == EL3 then X[t, 64] = MPAMVPMV_EL2;

MSR MPAMVPMV_EL2, <Xt>

op0	op1	CRn	CRm	op2
0b11	0b100	0b1010	0b0100	0b001

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EffectiveHCR_EL2_NVx() IN {'1x1'} then NVMem[0x938] = X[t, 64]; elsif EffectiveHCR_EL2_NVx() IN {'xx1'} then if HaveEL(EL3) && MPAM3_EL3.TRAPLOWER == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else AArch64.SystemAccessTrap(EL2, 0x18); else UNDEFINED; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && MPAM3_EL3.TRAPLOWER == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else MPAMVPMV_EL2 = X[t, 64]; elsif PSTATE.EL == EL3 then MPAMVPMV_EL2 = X[t, 64];

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
RES0
VPM_V31	VPM_V30	VPM_V29	VPM_V28	VPM_V27	VPM_V26	VPM_V25	VPM_V24	VPM_V23	VPM_V22	VPM_V21	VPM_V20	VPM_V19	VPM_V18	VPM_V17	VPM_V16	VPM_V15	VPM_V14	VPM_V13	VPM_V12	VPM_V11	VPM_V10	VPM_V9	VPM_V8	VPM_V7	VPM_V6	VPM_V5	VPM_V4	VPM_V3	VPM_V2	VPM_V1	VPM_V0

MPAMVPMV_EL2, MPAM Virtual Partition Mapping Valid Register

Purpose