Nested PAPR API provides a standard Guest State Buffer (GSB) format
with unique IDs for each guest state element for which get/set state is
supported by the API. Some of the elements are read-only and/or guest-wide.
Introducing helper routines for state exchange of each of the nested guest
state elements for which get/set state should be supported by the API.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
---
include/hw/ppc/spapr_nested.h | 303 +++++++++++++++++++++++
hw/ppc/spapr_nested.c | 442 +++++++++++++++++++++++++++++++++-
2 files changed, 742 insertions(+), 3 deletions(-)
diff --git a/include/hw/ppc/spapr_nested.h b/include/hw/ppc/spapr_nested.h
index a3b61eb79a..492302a21d 100644
--- a/include/hw/ppc/spapr_nested.h
+++ b/include/hw/ppc/spapr_nested.h
@@ -3,6 +3,191 @@
#include "target/ppc/cpu.h"
+/* Guest State Buffer Element IDs */
+#define GSB_HV_VCPU_IGNORED_ID 0x0000 /* An element whose value is ignored */
+#define GSB_HV_VCPU_STATE_SIZE 0x0001 /* HV internal format VCPU state size */
+#define GSB_VCPU_OUT_BUF_MIN_SZ 0x0002 /* Min size of the Run VCPU o/p buffer */
+#define GSB_VCPU_LPVR 0x0003 /* Logical PVR */
+#define GSB_TB_OFFSET 0x0004 /* Timebase Offset */
+#define GSB_PART_SCOPED_PAGETBL 0x0005 /* Partition Scoped Page Table */
+#define GSB_PROCESS_TBL 0x0006 /* Process Table */
+ /* RESERVED 0x0007 - 0x0BFF */
+#define GSB_VCPU_IN_BUFFER 0x0C00 /* Run VCPU Input Buffer */
+#define GSB_VCPU_OUT_BUFFER 0x0C01 /* Run VCPU Out Buffer */
+#define GSB_VCPU_VPA 0x0C02 /* HRA to Guest VCPU VPA */
+ /* RESERVED 0x0C03 - 0x0FFF */
+#define GSB_VCPU_GPR0 0x1000
+#define GSB_VCPU_GPR1 0x1001
+#define GSB_VCPU_GPR2 0x1002
+#define GSB_VCPU_GPR3 0x1003
+#define GSB_VCPU_GPR4 0x1004
+#define GSB_VCPU_GPR5 0x1005
+#define GSB_VCPU_GPR6 0x1006
+#define GSB_VCPU_GPR7 0x1007
+#define GSB_VCPU_GPR8 0x1008
+#define GSB_VCPU_GPR9 0x1009
+#define GSB_VCPU_GPR10 0x100A
+#define GSB_VCPU_GPR11 0x100B
+#define GSB_VCPU_GPR12 0x100C
+#define GSB_VCPU_GPR13 0x100D
+#define GSB_VCPU_GPR14 0x100E
+#define GSB_VCPU_GPR15 0x100F
+#define GSB_VCPU_GPR16 0x1010
+#define GSB_VCPU_GPR17 0x1011
+#define GSB_VCPU_GPR18 0x1012
+#define GSB_VCPU_GPR19 0x1013
+#define GSB_VCPU_GPR20 0x1014
+#define GSB_VCPU_GPR21 0x1015
+#define GSB_VCPU_GPR22 0x1016
+#define GSB_VCPU_GPR23 0x1017
+#define GSB_VCPU_GPR24 0x1018
+#define GSB_VCPU_GPR25 0x1019
+#define GSB_VCPU_GPR26 0x101A
+#define GSB_VCPU_GPR27 0x101B
+#define GSB_VCPU_GPR28 0x101C
+#define GSB_VCPU_GPR29 0x101D
+#define GSB_VCPU_GPR30 0x101E
+#define GSB_VCPU_GPR31 0x101F
+#define GSB_VCPU_HDEC_EXPIRY_TB 0x1020
+#define GSB_VCPU_SPR_NIA 0x1021
+#define GSB_VCPU_SPR_MSR 0x1022
+#define GSB_VCPU_SPR_LR 0x1023
+#define GSB_VCPU_SPR_XER 0x1024
+#define GSB_VCPU_SPR_CTR 0x1025
+#define GSB_VCPU_SPR_CFAR 0x1026
+#define GSB_VCPU_SPR_SRR0 0x1027
+#define GSB_VCPU_SPR_SRR1 0x1028
+#define GSB_VCPU_SPR_DAR 0x1029
+#define GSB_VCPU_DEC_EXPIRE_TB 0x102A
+#define GSB_VCPU_SPR_VTB 0x102B
+#define GSB_VCPU_SPR_LPCR 0x102C
+#define GSB_VCPU_SPR_HFSCR 0x102D
+#define GSB_VCPU_SPR_FSCR 0x102E
+#define GSB_VCPU_SPR_FPSCR 0x102F
+#define GSB_VCPU_SPR_DAWR0 0x1030
+#define GSB_VCPU_SPR_DAWR1 0x1031
+#define GSB_VCPU_SPR_CIABR 0x1032
+#define GSB_VCPU_SPR_PURR 0x1033
+#define GSB_VCPU_SPR_SPURR 0x1034
+#define GSB_VCPU_SPR_IC 0x1035
+#define GSB_VCPU_SPR_SPRG0 0x1036
+#define GSB_VCPU_SPR_SPRG1 0x1037
+#define GSB_VCPU_SPR_SPRG2 0x1038
+#define GSB_VCPU_SPR_SPRG3 0x1039
+#define GSB_VCPU_SPR_PPR 0x103A
+#define GSB_VCPU_SPR_MMCR0 0x103B
+#define GSB_VCPU_SPR_MMCR1 0x103C
+#define GSB_VCPU_SPR_MMCR2 0x103D
+#define GSB_VCPU_SPR_MMCR3 0x103E
+#define GSB_VCPU_SPR_MMCRA 0x103F
+#define GSB_VCPU_SPR_SIER 0x1040
+#define GSB_VCPU_SPR_SIER2 0x1041
+#define GSB_VCPU_SPR_SIER3 0x1042
+#define GSB_VCPU_SPR_BESCR 0x1043
+#define GSB_VCPU_SPR_EBBHR 0x1044
+#define GSB_VCPU_SPR_EBBRR 0x1045
+#define GSB_VCPU_SPR_AMR 0x1046
+#define GSB_VCPU_SPR_IAMR 0x1047
+#define GSB_VCPU_SPR_AMOR 0x1048
+#define GSB_VCPU_SPR_UAMOR 0x1049
+#define GSB_VCPU_SPR_SDAR 0x104A
+#define GSB_VCPU_SPR_SIAR 0x104B
+#define GSB_VCPU_SPR_DSCR 0x104C
+#define GSB_VCPU_SPR_TAR 0x104D
+#define GSB_VCPU_SPR_DEXCR 0x104E
+#define GSB_VCPU_SPR_HDEXCR 0x104F
+#define GSB_VCPU_SPR_HASHKEYR 0x1050
+#define GSB_VCPU_SPR_HASHPKEYR 0x1051
+#define GSB_VCPU_SPR_CTRL 0x1052
+ /* RESERVED 0x1053 - 0x1FFF */
+#define GSB_VCPU_SPR_CR 0x2000
+#define GSB_VCPU_SPR_PIDR 0x2001
+#define GSB_VCPU_SPR_DSISR 0x2002
+#define GSB_VCPU_SPR_VSCR 0x2003
+#define GSB_VCPU_SPR_VRSAVE 0x2004
+#define GSB_VCPU_SPR_DAWRX0 0x2005
+#define GSB_VCPU_SPR_DAWRX1 0x2006
+#define GSB_VCPU_SPR_PMC1 0x2007
+#define GSB_VCPU_SPR_PMC2 0x2008
+#define GSB_VCPU_SPR_PMC3 0x2009
+#define GSB_VCPU_SPR_PMC4 0x200A
+#define GSB_VCPU_SPR_PMC5 0x200B
+#define GSB_VCPU_SPR_PMC6 0x200C
+#define GSB_VCPU_SPR_WORT 0x200D
+#define GSB_VCPU_SPR_PSPB 0x200E
+ /* RESERVED 0x200F - 0x2FFF */
+#define GSB_VCPU_SPR_VSR0 0x3000
+#define GSB_VCPU_SPR_VSR1 0x3001
+#define GSB_VCPU_SPR_VSR2 0x3002
+#define GSB_VCPU_SPR_VSR3 0x3003
+#define GSB_VCPU_SPR_VSR4 0x3004
+#define GSB_VCPU_SPR_VSR5 0x3005
+#define GSB_VCPU_SPR_VSR6 0x3006
+#define GSB_VCPU_SPR_VSR7 0x3007
+#define GSB_VCPU_SPR_VSR8 0x3008
+#define GSB_VCPU_SPR_VSR9 0x3009
+#define GSB_VCPU_SPR_VSR10 0x300A
+#define GSB_VCPU_SPR_VSR11 0x300B
+#define GSB_VCPU_SPR_VSR12 0x300C
+#define GSB_VCPU_SPR_VSR13 0x300D
+#define GSB_VCPU_SPR_VSR14 0x300E
+#define GSB_VCPU_SPR_VSR15 0x300F
+#define GSB_VCPU_SPR_VSR16 0x3010
+#define GSB_VCPU_SPR_VSR17 0x3011
+#define GSB_VCPU_SPR_VSR18 0x3012
+#define GSB_VCPU_SPR_VSR19 0x3013
+#define GSB_VCPU_SPR_VSR20 0x3014
+#define GSB_VCPU_SPR_VSR21 0x3015
+#define GSB_VCPU_SPR_VSR22 0x3016
+#define GSB_VCPU_SPR_VSR23 0x3017
+#define GSB_VCPU_SPR_VSR24 0x3018
+#define GSB_VCPU_SPR_VSR25 0x3019
+#define GSB_VCPU_SPR_VSR26 0x301A
+#define GSB_VCPU_SPR_VSR27 0x301B
+#define GSB_VCPU_SPR_VSR28 0x301C
+#define GSB_VCPU_SPR_VSR29 0x301D
+#define GSB_VCPU_SPR_VSR30 0x301E
+#define GSB_VCPU_SPR_VSR31 0x301F
+#define GSB_VCPU_SPR_VSR32 0x3020
+#define GSB_VCPU_SPR_VSR33 0x3021
+#define GSB_VCPU_SPR_VSR34 0x3022
+#define GSB_VCPU_SPR_VSR35 0x3023
+#define GSB_VCPU_SPR_VSR36 0x3024
+#define GSB_VCPU_SPR_VSR37 0x3025
+#define GSB_VCPU_SPR_VSR38 0x3026
+#define GSB_VCPU_SPR_VSR39 0x3027
+#define GSB_VCPU_SPR_VSR40 0x3028
+#define GSB_VCPU_SPR_VSR41 0x3029
+#define GSB_VCPU_SPR_VSR42 0x302A
+#define GSB_VCPU_SPR_VSR43 0x302B
+#define GSB_VCPU_SPR_VSR44 0x302C
+#define GSB_VCPU_SPR_VSR45 0x302D
+#define GSB_VCPU_SPR_VSR46 0x302E
+#define GSB_VCPU_SPR_VSR47 0x302F
+#define GSB_VCPU_SPR_VSR48 0x3030
+#define GSB_VCPU_SPR_VSR49 0x3031
+#define GSB_VCPU_SPR_VSR50 0x3032
+#define GSB_VCPU_SPR_VSR51 0x3033
+#define GSB_VCPU_SPR_VSR52 0x3034
+#define GSB_VCPU_SPR_VSR53 0x3035
+#define GSB_VCPU_SPR_VSR54 0x3036
+#define GSB_VCPU_SPR_VSR55 0x3037
+#define GSB_VCPU_SPR_VSR56 0x3038
+#define GSB_VCPU_SPR_VSR57 0x3039
+#define GSB_VCPU_SPR_VSR58 0x303A
+#define GSB_VCPU_SPR_VSR59 0x303B
+#define GSB_VCPU_SPR_VSR60 0x303C
+#define GSB_VCPU_SPR_VSR61 0x303D
+#define GSB_VCPU_SPR_VSR62 0x303E
+#define GSB_VCPU_SPR_VSR63 0x303F
+ /* RESERVED 0x3040 - 0xEFFF */
+#define GSB_VCPU_SPR_HDAR 0xF000
+#define GSB_VCPU_SPR_HDSISR 0xF001
+#define GSB_VCPU_SPR_HEIR 0xF002
+#define GSB_VCPU_SPR_ASDR 0xF003
+/* End of list of Guest State Buffer Element IDs */
+#define GSB_LAST GSB_VCPU_SPR_ASDR
+
typedef struct SpaprMachineStateNested {
uint64_t ptcr;
uint8_t api;
@@ -16,6 +201,8 @@ typedef struct SpaprMachineStateNested {
typedef struct SpaprMachineStateNestedGuest {
uint32_t pvr_logical;
unsigned long vcpus;
+ uint64_t parttbl[2];
+ uint64_t tb_offset;
struct SpaprMachineStateNestedGuestVcpu *vcpu;
} SpaprMachineStateNestedGuest;
@@ -31,6 +218,99 @@ typedef struct SpaprMachineStateNestedGuest {
#define PAPR_NESTED_GUEST_MAX 4096
#define H_GUEST_DELETE_ALL_FLAG 0x8000000000000000ULL
#define PAPR_NESTED_GUEST_VCPU_MAX 2048
+#define VCPU_OUT_BUF_MIN_SZ 0x80ULL
+#define HVMASK_DEFAULT 0xffffffffffffffff
+#define HVMASK_LPCR 0x0070000003820800
+#define HVMASK_MSR 0xEBFFFFFFFFBFEFFF
+#define HVMASK_HDEXCR 0x00000000FFFFFFFF
+#define HVMASK_TB_OFFSET 0x000000FFFFFFFFFF
+
+#define GUEST_STATE_ELEMENT(i, sz, s, f, ptr, c) { \
+ .id = (i), \
+ .size = (sz), \
+ .location = ptr, \
+ .offset = offsetof(struct s, f), \
+ .copy = (c) \
+}
+
+#define GSBE_NESTED(i, sz, f, c) { \
+ .id = (i), \
+ .size = (sz), \
+ .location = get_guest_ptr, \
+ .offset = offsetof(struct SpaprMachineStateNestedGuest, f),\
+ .copy = (c), \
+ .mask = HVMASK_DEFAULT \
+}
+
+#define GSBE_NESTED_MSK(i, sz, f, c, m) { \
+ .id = (i), \
+ .size = (sz), \
+ .location = get_guest_ptr, \
+ .offset = offsetof(struct SpaprMachineStateNestedGuest, f),\
+ .copy = (c), \
+ .mask = (m) \
+}
+
+#define GSBE_NESTED_VCPU(i, sz, f, c) { \
+ .id = (i), \
+ .size = (sz), \
+ .location = get_vcpu_ptr, \
+ .offset = offsetof(struct SpaprMachineStateNestedGuestVcpu, f),\
+ .copy = (c), \
+ .mask = HVMASK_DEFAULT \
+}
+
+#define GUEST_STATE_ELEMENT_NOP(i, sz) { \
+ .id = (i), \
+ .size = (sz), \
+ .location = NULL, \
+ .offset = 0, \
+ .copy = NULL, \
+ .mask = HVMASK_DEFAULT \
+}
+
+#define GUEST_STATE_ELEMENT_NOP_DW(i) \
+ GUEST_STATE_ELEMENT_NOP(i, 8)
+#define GUEST_STATE_ELEMENT_NOP_W(i) \
+ GUEST_STATE_ELEMENT_NOP(i, 4)
+
+#define GUEST_STATE_ELEMENT_BASE(i, s, c) { \
+ .id = (i), \
+ .size = (s), \
+ .location = get_vcpu_state_ptr, \
+ .offset = 0, \
+ .copy = (c), \
+ .mask = HVMASK_DEFAULT \
+ }
+
+#define GUEST_STATE_ELEMENT_OFF(i, s, f, c) { \
+ .id = (i), \
+ .size = (s), \
+ .location = get_vcpu_state_ptr, \
+ .offset = offsetof(struct nested_ppc_state, f), \
+ .copy = (c), \
+ .mask = HVMASK_DEFAULT \
+ }
+
+#define GUEST_STATE_ELEMENT_MSK(i, s, f, c, m) { \
+ .id = (i), \
+ .size = (s), \
+ .location = get_vcpu_state_ptr, \
+ .offset = offsetof(struct nested_ppc_state, f), \
+ .copy = (c), \
+ .mask = (m) \
+ }
+
+#define GUEST_STATE_ELEMENT_ENV_QW(i, f) \
+ GUEST_STATE_ELEMENT_OFF(i, 16, f, copy_state_16to16)
+#define GUEST_STATE_ELEMENT_ENV_DW(i, f) \
+ GUEST_STATE_ELEMENT_OFF(i, 8, f, copy_state_8to8)
+#define GUEST_STATE_ELEMENT_ENV_W(i, f) \
+ GUEST_STATE_ELEMENT_OFF(i, 4, f, copy_state_4to8)
+#define GUEST_STATE_ELEMENT_ENV_WW(i, f) \
+ GUEST_STATE_ELEMENT_OFF(i, 4, f, copy_state_4to4)
+#define GSE_ENV_DWM(i, f, m) \
+ GUEST_STATE_ELEMENT_MSK(i, 8, f, copy_state_8to8, m)
/*
* Register state for entering a nested guest with H_ENTER_NESTED.
@@ -172,17 +452,40 @@ struct nested_ppc_state {
uint64_t sier;
uint32_t vscr;
uint64_t fpscr;
+ int64_t dec_expiry_tb;
+};
+
+struct SpaprMachineStateNestedGuestVcpuRunBuf {
+ uint64_t addr;
+ uint64_t size;
};
typedef struct SpaprMachineStateNestedGuestVcpu {
bool enabled;
struct nested_ppc_state state;
+ struct SpaprMachineStateNestedGuestVcpuRunBuf runbufin;
+ struct SpaprMachineStateNestedGuestVcpuRunBuf runbufout;
+ int64_t tb_offset;
+ uint64_t hdecr_expiry_tb;
} SpaprMachineStateNestedGuestVcpu;
+struct guest_state_element_type {
+ uint16_t id;
+ int size;
+#define GUEST_STATE_ELEMENT_TYPE_FLAG_GUEST_WIDE 0x1
+#define GUEST_STATE_ELEMENT_TYPE_FLAG_READ_ONLY 0x2
+ uint16_t flags;
+ void *(*location)(SpaprMachineStateNestedGuest *, target_ulong);
+ size_t offset;
+ void (*copy)(void *, void *, bool);
+ uint64_t mask;
+};
+
void spapr_exit_nested(PowerPCCPU *cpu, int excp);
typedef struct SpaprMachineState SpaprMachineState;
bool spapr_get_pate_nested_hv(SpaprMachineState *spapr, PowerPCCPU *cpu,
target_ulong lpid, ppc_v3_pate_t *entry);
void spapr_nested_init(SpaprMachineState *spapr);
uint8_t spapr_nested_api(SpaprMachineState *spapr);
+void spapr_nested_gsb_init(void);
#endif /* HW_SPAPR_NESTED_H */
diff --git a/hw/ppc/spapr_nested.c b/hw/ppc/spapr_nested.c
index 39d0c087f1..faba27dd50 100644
--- a/hw/ppc/spapr_nested.c
+++ b/hw/ppc/spapr_nested.c
@@ -13,6 +13,7 @@ void spapr_nested_init(SpaprMachineState *spapr)
{
spapr->nested.api = 0;
spapr->nested.capabilities_set = false;
+ spapr_nested_gsb_init();
}
uint8_t spapr_nested_api(SpaprMachineState *spapr)
@@ -545,7 +546,7 @@ SpaprMachineStateNestedGuest *spapr_get_nested_guest(SpaprMachineState *spapr,
}
static bool spapr_nested_vcpu_check(SpaprMachineStateNestedGuest *guest,
- target_ulong vcpuid)
+ target_ulong vcpuid, bool inoutbuf)
{
struct SpaprMachineStateNestedGuestVcpu *vcpu;
/*
@@ -566,7 +567,436 @@ static bool spapr_nested_vcpu_check(SpaprMachineStateNestedGuest *guest,
return false;
}
- return true;
+ if (!inoutbuf) {
+ return true;
+ }
+
+ /* Check to see if the in/out buffers are registered */
+ if (vcpu->runbufin.addr && vcpu->runbufout.addr) {
+ return true;
+ }
+
+ return false;
+}
+
+static void *get_vcpu_state_ptr(SpaprMachineStateNestedGuest *guest,
+ target_ulong vcpuid)
+{
+ assert(spapr_nested_vcpu_check(guest, vcpuid, false));
+ return &guest->vcpu[vcpuid].state;
+}
+
+static void *get_vcpu_ptr(SpaprMachineStateNestedGuest *guest,
+ target_ulong vcpuid)
+{
+ assert(spapr_nested_vcpu_check(guest, vcpuid, false));
+ return &guest->vcpu[vcpuid];
+}
+
+static void *get_guest_ptr(SpaprMachineStateNestedGuest *guest,
+ target_ulong vcpuid)
+{
+ return guest; /* for GSBE_NESTED */
+}
+
+/*
+ * set=1 means the L1 is trying to set some state
+ * set=0 means the L1 is trying to get some state
+ */
+static void copy_state_8to8(void *a, void *b, bool set)
+{
+ /* set takes from the Big endian element_buf and sets internal buffer */
+
+ if (set) {
+ *(uint64_t *)a = be64_to_cpu(*(uint64_t *)b);
+ } else {
+ *(uint64_t *)b = cpu_to_be64(*(uint64_t *)a);
+ }
+}
+
+static void copy_state_4to4(void *a, void *b, bool set)
+{
+ if (set) {
+ *(uint32_t *)a = be32_to_cpu(*(uint32_t *)b);
+ } else {
+ *(uint32_t *)b = cpu_to_be32(*((uint32_t *)a));
+ }
+}
+
+static void copy_state_16to16(void *a, void *b, bool set)
+{
+ uint64_t *src, *dst;
+
+ if (set) {
+ src = b;
+ dst = a;
+
+ dst[1] = be64_to_cpu(src[0]);
+ dst[0] = be64_to_cpu(src[1]);
+ } else {
+ src = a;
+ dst = b;
+
+ dst[1] = cpu_to_be64(src[0]);
+ dst[0] = cpu_to_be64(src[1]);
+ }
+}
+
+static void copy_state_4to8(void *a, void *b, bool set)
+{
+ if (set) {
+ *(uint64_t *)a = (uint64_t) be32_to_cpu(*(uint32_t *)b);
+ } else {
+ *(uint32_t *)b = cpu_to_be32((uint32_t) (*((uint64_t *)a)));
+ }
+}
+
+static void copy_state_pagetbl(void *a, void *b, bool set)
+{
+ uint64_t *pagetbl;
+ uint64_t *buf; /* 3 double words */
+ uint64_t rts;
+
+ assert(set);
+
+ pagetbl = a;
+ buf = b;
+
+ *pagetbl = be64_to_cpu(buf[0]);
+ /* as per ISA section 6.7.6.1 */
+ *pagetbl |= PATE0_HR; /* Host Radix bit is 1 */
+
+ /* RTS */
+ rts = be64_to_cpu(buf[1]);
+ assert(rts == 52);
+ rts = rts - 31; /* since radix tree size = 2^(RTS+31) */
+ *pagetbl |= ((rts & 0x7) << 5); /* RTS2 is bit 56:58 */
+ *pagetbl |= (((rts >> 3) & 0x3) << 61); /* RTS1 is bit 1:2 */
+
+ /* RPDS {Size = 2^(RPDS+3) , RPDS >=5} */
+ *pagetbl |= 63 - clz64(be64_to_cpu(buf[2])) - 3;
+}
+
+static void copy_state_proctbl(void *a, void *b, bool set)
+{
+ uint64_t *proctbl;
+ uint64_t *buf; /* 2 double words */
+
+ assert(set);
+
+ proctbl = a;
+ buf = b;
+ /* PRTB: Process Table Base */
+ *proctbl = be64_to_cpu(buf[0]);
+ /* PRTS: Process Table Size = 2^(12+PRTS) */
+ if (be64_to_cpu(buf[1]) == (1ULL << 12)) {
+ *proctbl |= 0;
+ } else if (be64_to_cpu(buf[1]) == (1ULL << 24)) {
+ *proctbl |= 12;
+ } else {
+ g_assert_not_reached();
+ }
+}
+
+static void copy_state_runbuf(void *a, void *b, bool set)
+{
+ uint64_t *buf; /* 2 double words */
+ struct SpaprMachineStateNestedGuestVcpuRunBuf *runbuf;
+
+ assert(set);
+
+ runbuf = a;
+ buf = b;
+
+ runbuf->addr = be64_to_cpu(buf[0]);
+ assert(runbuf->addr);
+
+ /* per spec */
+ assert(be64_to_cpu(buf[1]) <= 16384);
+
+ /*
+ * This will also hit in the input buffer but should be fine for
+ * now. If not we can split this function.
+ */
+ assert(be64_to_cpu(buf[1]) >= VCPU_OUT_BUF_MIN_SZ);
+
+ runbuf->size = be64_to_cpu(buf[1]);
+}
+
+/* tell the L1 how big we want the output vcpu run buffer */
+static void out_buf_min_size(void *a, void *b, bool set)
+{
+ uint64_t *buf; /* 1 double word */
+
+ assert(!set);
+
+ buf = b;
+
+ buf[0] = cpu_to_be64(VCPU_OUT_BUF_MIN_SZ);
+}
+
+static void copy_logical_pvr(void *a, void *b, bool set)
+{
+ uint32_t *buf; /* 1 word */
+ uint32_t *pvr_logical_ptr;
+ uint32_t pvr_logical;
+
+ pvr_logical_ptr = a;
+ buf = b;
+
+ if (!set) {
+ buf[0] = cpu_to_be32(*pvr_logical_ptr);
+ return;
+ }
+
+ pvr_logical = be32_to_cpu(buf[0]);
+
+ *pvr_logical_ptr = pvr_logical;
+}
+
+static void copy_tb_offset(void *a, void *b, bool set)
+{
+ SpaprMachineStateNestedGuest *guest;
+ uint64_t *buf; /* 1 double word */
+ uint64_t *tb_offset_ptr;
+ uint64_t tb_offset;
+
+ tb_offset_ptr = a;
+ buf = b;
+
+ if (!set) {
+ buf[0] = cpu_to_be64(*tb_offset_ptr);
+ return;
+ }
+
+ tb_offset = be64_to_cpu(buf[0]);
+ /* need to copy this to the individual tb_offset for each vcpu */
+ guest = container_of(tb_offset_ptr,
+ struct SpaprMachineStateNestedGuest,
+ tb_offset);
+ for (int i = 0; i < guest->vcpus; i++) {
+ guest->vcpu[i].tb_offset = tb_offset;
+ }
+}
+
+static void copy_state_hdecr(void *a, void *b, bool set)
+{
+ uint64_t *buf; /* 1 double word */
+ uint64_t *hdecr_expiry_tb;
+
+ hdecr_expiry_tb = a;
+ buf = b;
+
+ if (!set) {
+ buf[0] = cpu_to_be64(*hdecr_expiry_tb);
+ return;
+ }
+
+ *hdecr_expiry_tb = be64_to_cpu(buf[0]);
+}
+
+struct guest_state_element_type guest_state_element_types[] = {
+ GUEST_STATE_ELEMENT_NOP(GSB_HV_VCPU_IGNORED_ID, 0),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR0, gpr[0]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR1, gpr[1]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR2, gpr[2]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR3, gpr[3]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR4, gpr[4]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR5, gpr[5]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR6, gpr[6]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR7, gpr[7]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR8, gpr[8]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR9, gpr[9]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR10, gpr[10]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR11, gpr[11]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR12, gpr[12]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR13, gpr[13]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR14, gpr[14]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR15, gpr[15]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR16, gpr[16]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR17, gpr[17]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR18, gpr[18]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR19, gpr[19]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR20, gpr[20]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR21, gpr[21]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR22, gpr[22]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR23, gpr[23]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR24, gpr[24]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR25, gpr[25]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR26, gpr[26]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR27, gpr[27]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR28, gpr[28]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR29, gpr[29]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR30, gpr[30]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_GPR31, gpr[31]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_NIA, nip),
+ GSE_ENV_DWM(GSB_VCPU_SPR_MSR, msr, HVMASK_MSR),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_CTR, ctr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_LR, lr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_XER, xer),
+ GUEST_STATE_ELEMENT_ENV_WW(GSB_VCPU_SPR_CR, cr),
+ GUEST_STATE_ELEMENT_NOP_DW(GSB_VCPU_SPR_MMCR3),
+ GUEST_STATE_ELEMENT_NOP_DW(GSB_VCPU_SPR_SIER2),
+ GUEST_STATE_ELEMENT_NOP_DW(GSB_VCPU_SPR_SIER3),
+ GUEST_STATE_ELEMENT_NOP_W(GSB_VCPU_SPR_WORT),
+ GSE_ENV_DWM(GSB_VCPU_SPR_LPCR, lpcr, HVMASK_LPCR),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_AMOR, amor),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_HFSCR, hfscr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_DAWR0, dawr0),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_DAWRX0, dawrx0),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_CIABR, ciabr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_PURR, purr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SPURR, spurr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_IC, ic),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_VTB, vtb),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_HDAR, hdar),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_HDSISR, hdsisr),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_HEIR, heir),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_ASDR, asdr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SRR0, srr0),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SRR1, srr1),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SPRG0, sprg0),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SPRG1, sprg1),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SPRG2, sprg2),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SPRG3, sprg3),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PIDR, pidr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_CFAR, cfar),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_PPR, ppr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_DAWR1, dawr1),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_DAWRX1, dawrx1),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_DEXCR, dexcr),
+ GSE_ENV_DWM(GSB_VCPU_SPR_HDEXCR, hdexcr, HVMASK_HDEXCR),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_HASHKEYR, hashkeyr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_HASHPKEYR, hashpkeyr),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR0, vsr[0]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR1, vsr[1]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR2, vsr[2]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR3, vsr[3]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR4, vsr[4]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR5, vsr[5]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR6, vsr[6]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR7, vsr[7]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR8, vsr[8]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR9, vsr[9]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR10, vsr[10]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR11, vsr[11]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR12, vsr[12]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR13, vsr[13]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR14, vsr[14]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR15, vsr[15]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR16, vsr[16]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR17, vsr[17]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR18, vsr[18]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR19, vsr[19]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR20, vsr[20]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR21, vsr[21]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR22, vsr[22]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR23, vsr[23]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR24, vsr[24]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR25, vsr[25]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR26, vsr[26]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR27, vsr[27]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR28, vsr[28]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR29, vsr[29]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR30, vsr[30]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR31, vsr[31]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR32, vsr[32]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR33, vsr[33]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR34, vsr[34]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR35, vsr[35]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR36, vsr[36]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR37, vsr[37]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR38, vsr[38]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR39, vsr[39]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR40, vsr[40]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR41, vsr[41]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR42, vsr[42]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR43, vsr[43]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR44, vsr[44]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR45, vsr[45]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR46, vsr[46]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR47, vsr[47]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR48, vsr[48]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR49, vsr[49]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR50, vsr[50]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR51, vsr[51]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR52, vsr[52]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR53, vsr[53]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR54, vsr[54]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR55, vsr[55]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR56, vsr[56]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR57, vsr[57]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR58, vsr[58]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR59, vsr[59]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR60, vsr[60]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR61, vsr[61]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR62, vsr[62]),
+ GUEST_STATE_ELEMENT_ENV_QW(GSB_VCPU_SPR_VSR63, vsr[63]),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_EBBHR, ebbhr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_TAR, tar),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_EBBRR, ebbrr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_BESCR, bescr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_IAMR, iamr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_AMR, amr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_UAMOR, uamor),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_DSCR, dscr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_FSCR, fscr),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PSPB, pspb),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_CTRL, ctrl),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_VRSAVE, vrsave),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_DAR, dar),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_DSISR, dsisr),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC1, pmc1),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC2, pmc2),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC3, pmc3),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC4, pmc4),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC5, pmc5),
+ GUEST_STATE_ELEMENT_ENV_W(GSB_VCPU_SPR_PMC6, pmc6),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_MMCR0, mmcr0),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_MMCR1, mmcr1),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_MMCR2, mmcr2),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_MMCRA, mmcra),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SDAR , sdar),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SIAR , siar),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_SIER , sier),
+ GUEST_STATE_ELEMENT_ENV_WW(GSB_VCPU_SPR_VSCR, vscr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_SPR_FPSCR, fpscr),
+ GUEST_STATE_ELEMENT_ENV_DW(GSB_VCPU_DEC_EXPIRE_TB, dec_expiry_tb),
+ GSBE_NESTED(GSB_PART_SCOPED_PAGETBL, 0x18, parttbl[0], copy_state_pagetbl),
+ GSBE_NESTED(GSB_PROCESS_TBL, 0x10, parttbl[1], copy_state_proctbl),
+ GSBE_NESTED(GSB_VCPU_LPVR, 0x4, pvr_logical, copy_logical_pvr),
+ GSBE_NESTED_MSK(GSB_TB_OFFSET, 0x8, tb_offset, copy_tb_offset,
+ HVMASK_TB_OFFSET),
+ GSBE_NESTED_VCPU(GSB_VCPU_IN_BUFFER, 0x10, runbufin, copy_state_runbuf),
+ GSBE_NESTED_VCPU(GSB_VCPU_OUT_BUFFER, 0x10, runbufout, copy_state_runbuf),
+ GSBE_NESTED_VCPU(GSB_VCPU_OUT_BUF_MIN_SZ, 0x8, runbufout, out_buf_min_size),
+ GSBE_NESTED_VCPU(GSB_VCPU_HDEC_EXPIRY_TB, 0x8, hdecr_expiry_tb,
+ copy_state_hdecr)
+};
+
+void spapr_nested_gsb_init(void)
+{
+ struct guest_state_element_type *type;
+
+ /* Init the guest state elements lookup table, flags for now */
+ for (int i = 0; i < ARRAY_SIZE(guest_state_element_types); i++) {
+ type = &guest_state_element_types[i];
+
+ assert(type->id <= GSB_LAST);
+ if (type->id >= GSB_VCPU_SPR_HDAR)
+ /* 0xf000 - 0xf005 Thread + RO */
+ type->flags = GUEST_STATE_ELEMENT_TYPE_FLAG_READ_ONLY;
+ else if (type->id >= GSB_VCPU_IN_BUFFER)
+ /* 0x0c00 - 0xf000 Thread + RW */
+ type->flags = 0;
+ else if (type->id >= GSB_VCPU_LPVR)
+ /* 0x0003 - 0x0bff Guest + RW */
+ type->flags = GUEST_STATE_ELEMENT_TYPE_FLAG_GUEST_WIDE;
+ else if (type->id >= GSB_HV_VCPU_STATE_SIZE)
+ /* 0x0001 - 0x0002 Guest + RO */
+ type->flags = GUEST_STATE_ELEMENT_TYPE_FLAG_READ_ONLY |
+ GUEST_STATE_ELEMENT_TYPE_FLAG_GUEST_WIDE;
+ }
}
static target_ulong h_guest_get_capabilities(PowerPCCPU *cpu,
@@ -808,7 +1238,7 @@ static target_ulong h_guest_create_vcpu(PowerPCCPU *cpu,
l2_state->pvr = env->spr[SPR_PVR];
guest->vcpu[vcpuid].enabled = true;
- if (!spapr_nested_vcpu_check(guest, vcpuid)) {
+ if (!spapr_nested_vcpu_check(guest, vcpuid, false)) {
return H_PARAMETER;
}
return H_SUCCESS;
@@ -865,4 +1295,10 @@ void spapr_register_nested_papr(void)
{
/* DO NOTHING */
}
+
+void spapr_nested_gsb_init(void)
+{
+ /* DO NOTHING */
+}
+
#endif
--
2.39.3On Tue Feb 20, 2024 at 6:36 PM AEST, Harsh Prateek Bora wrote:
> Nested PAPR API provides a standard Guest State Buffer (GSB) format
> with unique IDs for each guest state element for which get/set state is
> supported by the API. Some of the elements are read-only and/or guest-wide.
> Introducing helper routines for state exchange of each of the nested guest
> state elements for which get/set state should be supported by the API.
>
This is doing more than just adding helper routines for the GSB access.
[snip]
> +
> typedef struct SpaprMachineStateNested {
> uint64_t ptcr;
> uint8_t api;
> @@ -16,6 +201,8 @@ typedef struct SpaprMachineStateNested {
> typedef struct SpaprMachineStateNestedGuest {
> uint32_t pvr_logical;
> unsigned long vcpus;
> + uint64_t parttbl[2];
> + uint64_t tb_offset;
> struct SpaprMachineStateNestedGuestVcpu *vcpu;
> } SpaprMachineStateNestedGuest;
>
[snip]
>
> /*
> * Register state for entering a nested guest with H_ENTER_NESTED.
> @@ -172,17 +452,40 @@ struct nested_ppc_state {
> uint64_t sier;
> uint32_t vscr;
> uint64_t fpscr;
> + int64_t dec_expiry_tb;
> +};
> +
> +struct SpaprMachineStateNestedGuestVcpuRunBuf {
> + uint64_t addr;
> + uint64_t size;
> };
>
> typedef struct SpaprMachineStateNestedGuestVcpu {
> bool enabled;
> struct nested_ppc_state state;
> + struct SpaprMachineStateNestedGuestVcpuRunBuf runbufin;
> + struct SpaprMachineStateNestedGuestVcpuRunBuf runbufout;
> + int64_t tb_offset;
> + uint64_t hdecr_expiry_tb;
> } SpaprMachineStateNestedGuestVcpu;
It's adding new fields in existing nested guest state
structures. This should be explained a bit more, split into
another patch, or moved to patches where they get used.
Thanks,
Nick
On 2/27/24 15:32, Nicholas Piggin wrote:
> On Tue Feb 20, 2024 at 6:36 PM AEST, Harsh Prateek Bora wrote:
>> Nested PAPR API provides a standard Guest State Buffer (GSB) format
>> with unique IDs for each guest state element for which get/set state is
>> supported by the API. Some of the elements are read-only and/or guest-wide.
>> Introducing helper routines for state exchange of each of the nested guest
>> state elements for which get/set state should be supported by the API.
>>
>
> This is doing more than just adding helper routines for the GSB access.
Yes, some of the GSB elements are also introduced along with respective
helpers.
>
> [snip]
>
>> +
>> typedef struct SpaprMachineStateNested {
>> uint64_t ptcr;
>> uint8_t api;
>> @@ -16,6 +201,8 @@ typedef struct SpaprMachineStateNested {
>> typedef struct SpaprMachineStateNestedGuest {
>> uint32_t pvr_logical;
>> unsigned long vcpus;
>> + uint64_t parttbl[2];
>> + uint64_t tb_offset;
>> struct SpaprMachineStateNestedGuestVcpu *vcpu;
>> } SpaprMachineStateNestedGuest;
>>
> [snip]
>
>>
>> /*
>> * Register state for entering a nested guest with H_ENTER_NESTED.
>> @@ -172,17 +452,40 @@ struct nested_ppc_state {
>> uint64_t sier;
>> uint32_t vscr;
>> uint64_t fpscr;
>> + int64_t dec_expiry_tb;
>> +};
>> +
>> +struct SpaprMachineStateNestedGuestVcpuRunBuf {
>> + uint64_t addr;
>> + uint64_t size;
>> };
>>
>> typedef struct SpaprMachineStateNestedGuestVcpu {
>> bool enabled;
>> struct nested_ppc_state state;
>> + struct SpaprMachineStateNestedGuestVcpuRunBuf runbufin;
>> + struct SpaprMachineStateNestedGuestVcpuRunBuf runbufout;
>> + int64_t tb_offset;
>> + uint64_t hdecr_expiry_tb;
>> } SpaprMachineStateNestedGuestVcpu;
>
> It's adding new fields in existing nested guest state
> structures. This should be explained a bit more, split into
> another patch, or moved to patches where they get used.
Yes, these new fields are actually representing GSB elements.
These elements were explained in the documentation patch which shall now
point to the documentation in the kernel docs as suggested earlier.
Let me know if we need to document additionally in this patch commit log
also.
regards,
Harsh
>
> Thanks,
> Nick
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