Re: [PATCH v2 11/11] KVM: riscv: selftests: Add get-reg-list test

Andrew Jones
2023-05-25T17:18:41Z

On Thu, May 25, 2023 at 03:38:35PM +0800, Haibo Xu wrote:
> get-reg-list test is used to check for KVM registers regressions
> during VM migration which happens when destination host kernel
> missing registers that the source host kernel has. The blessed
> list registers was created by running on v6.4-rc2.
>
> Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> ---
> tools/testing/selftests/kvm/Makefile | 3 +
> tools/testing/selftests/kvm/get-reg-list.c | 35 +-
> .../selftests/kvm/include/riscv/processor.h | 3 +
> .../selftests/kvm/riscv/get-reg-list.c | 539 ++++++++++++++++++
> 4 files changed, 579 insertions(+), 1 deletion(-)
> create mode 100644 tools/testing/selftests/kvm/riscv/get-reg-list.c
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 921d5db0f72b..4194b33ff77e 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -13,6 +13,8 @@ else ifeq ($(ARCH),arm64)
> ARCH_DIR := aarch64
> else ifeq ($(ARCH),s390)
> ARCH_DIR := s390x
> +else ifeq ($(ARCH),riscv)
> + ARCH_DIR := riscv

Why is this necessary? The else below already does the same thing, no?

> else
> ARCH_DIR := $(ARCH)
> endif
> @@ -177,6 +179,7 @@ TEST_GEN_PROGS_riscv += kvm_create_max_vcpus
> TEST_GEN_PROGS_riscv += kvm_page_table_test
> TEST_GEN_PROGS_riscv += set_memory_region_test
> TEST_GEN_PROGS_riscv += kvm_binary_stats_test
> +TEST_GEN_PROGS_riscv += get-reg-list

Please add this in the list in alphabetic order.

>
> SPLIT_TESTS += get-reg-list
>
> diff --git a/tools/testing/selftests/kvm/get-reg-list.c b/tools/testing/selftests/kvm/get-reg-list.c
> index ebd6b580b33b..b5821ada2dae 100644
> --- a/tools/testing/selftests/kvm/get-reg-list.c
> +++ b/tools/testing/selftests/kvm/get-reg-list.c
> @@ -150,9 +150,42 @@ static struct kvm_vcpu *vcpu_config_get_vcpu(struct vcpu_reg_list *c, struct kvm
> return vcpu;
> }
> #else
> +static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, long cap)
> +{
> + int ret;
> + unsigned long value;
> +
> + ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(cap), &value);
> + if (ret) {
> + printf("Failed to get cap %ld", cap);
> + return false;
> + }
> +
> + return !!value;
> +}
> +
> +static void check_supported(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)

Taking my feedback on the other patch this is now named finalize_vcpu()
and...

> +{
> + struct vcpu_reg_sublist *s;
> +
> + for_each_sublist(c, s) {
> + if (!s->capability)
> + continue;
> +
> + __TEST_REQUIRE(vcpu_has_ext(vcpu, s->capability),

...instead of 'capability' this is 'extension' and...

> + "%s: %s not available, skipping tests\n",
> + config_name(c), s->name);
> + }
> +}
> +
> static struct kvm_vcpu *vcpu_config_get_vcpu(struct vcpu_reg_list *c, struct kvm_vm *vm)
> {
> - return __vm_vcpu_add(vm, 0);
> + struct kvm_vcpu *vcpu;
> +
> + vcpu = __vm_vcpu_add(vm, 0);
> + check_supported(vcpu, c);
> +
> + return vcpu;

...this hunk can be dropped.

> }
> #endif
>
> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> index d00d213c3805..5b62a3d2aa9b 100644
> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> @@ -38,6 +38,9 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
> KVM_REG_RISCV_TIMER_REG(name), \
> KVM_REG_SIZE_U64)
>
> +#define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
> + idx, KVM_REG_SIZE_ULONG)
> +
> /* L3 index Bit[47:39] */
> #define PGTBL_L3_INDEX_MASK 0x0000FF8000000000ULL
> #define PGTBL_L3_INDEX_SHIFT 39
> diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> new file mode 100644
> index 000000000000..511dfe8d5a38
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> @@ -0,0 +1,539 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Check for KVM_GET_REG_LIST regressions.
> + *
> + * Copyright (C) 2020, Red Hat, Inc.
> + * Copyright (c) 2023 Intel Corporation
> + *
> + * The test was port from the get-reg-list.c on aarch64.

You can probably drop this 'ported' comment now that this file is only
adding riscv specific code.

> + */
> +#include <stdio.h>
> +#include "kvm_util.h"
> +#include "test_util.h"
> +#include "processor.h"
> +
> +#define REG_MASK (KVM_REG_ARCH_MASK | KVM_REG_SIZE_MASK)
> +
> +static const char *config_id_to_str(__u64 id)
> +{
> + /* reg_off is the offset into struct kvm_riscv_config */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_CONFIG);
> +
> + switch (reg_off) {
> + case KVM_REG_RISCV_CONFIG_REG(isa):
> + return "KVM_REG_RISCV_CONFIG_REG(isa)";
> + case KVM_REG_RISCV_CONFIG_REG(zicbom_block_size):
> + return "KVM_REG_RISCV_CONFIG_REG(zicbom_block_size)";
> + case KVM_REG_RISCV_CONFIG_REG(zicboz_block_size):
> + return "KVM_REG_RISCV_CONFIG_REG(zicboz_block_size)";
> + case KVM_REG_RISCV_CONFIG_REG(mvendorid):
> + return "KVM_REG_RISCV_CONFIG_REG(mvendorid)";
> + case KVM_REG_RISCV_CONFIG_REG(marchid):
> + return "KVM_REG_RISCV_CONFIG_REG(marchid)";
> + case KVM_REG_RISCV_CONFIG_REG(mimpid):
> + return "KVM_REG_RISCV_CONFIG_REG(mimpid)";
> + }
> +
> + /*
> + * Config regs would grow regularly with new pseudo reg added, so
> + * just show raw id to indicate a new pseudo config reg.
> + */
> + return strdup_printf("KVM_REG_RISCV_CONFIG_REG(%lld)/* UNKNOWN */", reg_off);
^ I'd add a
space here before the /*
And same comment for the other
UNKNOWNs below.
> +}
> +
> +static const char *core_id_to_str(const char *prefix, __u64 id)
> +{
> + /* reg_off is the offset into struct kvm_riscv_core */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_CORE);
> +
> + switch (reg_off) {
> + case KVM_REG_RISCV_CORE_REG(regs.pc):
> + return "KVM_REG_RISCV_CORE_REG(regs.pc)";
> + case KVM_REG_RISCV_CORE_REG(regs.ra) ...
> + KVM_REG_RISCV_CORE_REG(regs.t6):
> + return strdup_printf("KVM_REG_RISCV_CORE_REG(regs.regs[%lld])", reg_off);
> + case KVM_REG_RISCV_CORE_REG(mode):
> + return "KVM_REG_RISCV_CORE_REG(mode)";
> + }
> +
> + TEST_FAIL("%s: Unknown core reg id: 0x%llx", prefix, id);
> + return NULL;
> +}
> +
> +#define RISCV_CSR_GENERAL(csr) \
> + "KVM_REG_RISCV_CSR_GENERAL | KVM_REG_RISCV_CSR_REG(" #csr ")"
> +#define RISCV_CSR_AIA(csr) \
> + "KVM_REG_RISCV_CSR_AIA | KVM_REG_RISCV_CSR_REG(" #csr ")"
> +
> +static const char *general_csr_id_to_str(__u64 reg_off)
> +{
> + /* reg_off is the offset into struct kvm_riscv_csr */
> + switch (reg_off) {
> + case KVM_REG_RISCV_CSR_REG(sstatus):
> + return RISCV_CSR_GENERAL(sstatus);
> + case KVM_REG_RISCV_CSR_REG(sie):
> + return RISCV_CSR_GENERAL(sie);
> + case KVM_REG_RISCV_CSR_REG(stvec):
> + return RISCV_CSR_GENERAL(stvec);
> + case KVM_REG_RISCV_CSR_REG(sscratch):
> + return RISCV_CSR_GENERAL(sscratch);
> + case KVM_REG_RISCV_CSR_REG(sepc):
> + return RISCV_CSR_GENERAL(sepc);
> + case KVM_REG_RISCV_CSR_REG(scause):
> + return RISCV_CSR_GENERAL(scause);
> + case KVM_REG_RISCV_CSR_REG(stval):
> + return RISCV_CSR_GENERAL(stval);
> + case KVM_REG_RISCV_CSR_REG(sip):
> + return RISCV_CSR_GENERAL(sip);
> + case KVM_REG_RISCV_CSR_REG(satp):
> + return RISCV_CSR_GENERAL(satp);
> + case KVM_REG_RISCV_CSR_REG(scounteren):
> + return RISCV_CSR_GENERAL(scounteren);
> + }
> +
> + TEST_FAIL("Unknown general csr reg: 0x%llx", reg_off);
> + return NULL;
> +}
> +
> +static const char *aia_csr_id_to_str(__u64 reg_off)
> +{
> + /* reg_off is the offset into struct kvm_riscv_aia_csr */
> + switch (reg_off) {
> + case KVM_REG_RISCV_CSR_AIA_REG(siselect):
> + return RISCV_CSR_AIA(siselect);
> + case KVM_REG_RISCV_CSR_AIA_REG(iprio1):
> + return RISCV_CSR_AIA(iprio1);
> + case KVM_REG_RISCV_CSR_AIA_REG(iprio2):
> + return RISCV_CSR_AIA(iprio2);
> + case KVM_REG_RISCV_CSR_AIA_REG(sieh):
> + return RISCV_CSR_AIA(sieh);
> + case KVM_REG_RISCV_CSR_AIA_REG(siph):
> + return RISCV_CSR_AIA(siph);
> + case KVM_REG_RISCV_CSR_AIA_REG(iprio1h):
> + return RISCV_CSR_AIA(iprio1h);
> + case KVM_REG_RISCV_CSR_AIA_REG(iprio2h):
> + return RISCV_CSR_AIA(iprio2h);
> + }
> +
> + TEST_FAIL("Unknown aia csr reg: 0x%llx", reg_off);
> + return NULL;
> +}
> +
> +static const char *csr_id_to_str(const char *prefix, __u64 id)
> +{
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_CSR);
> + __u64 reg_subtype = reg_off & KVM_REG_RISCV_SUBTYPE_MASK;
> +
> + reg_off &= ~KVM_REG_RISCV_SUBTYPE_MASK;
> +
> + switch (reg_subtype) {
> + case KVM_REG_RISCV_CSR_GENERAL:
> + return general_csr_id_to_str(reg_off);
> + case KVM_REG_RISCV_CSR_AIA:
> + return aia_csr_id_to_str(reg_off);
> + }
> +
> + TEST_FAIL("%s: Unknown csr subtype: 0x%llx", prefix, reg_subtype);
> + return NULL;
> +}
> +
> +static const char *timer_id_to_str(const char *prefix, __u64 id)
> +{
> + /* reg_off is the offset into struct kvm_riscv_timer */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_TIMER);
> +
> + switch (reg_off) {
> + case KVM_REG_RISCV_TIMER_REG(frequency):
> + return "KVM_REG_RISCV_TIMER_REG(frequency)";
> + case KVM_REG_RISCV_TIMER_REG(time):
> + return "KVM_REG_RISCV_TIMER_REG(time)";
> + case KVM_REG_RISCV_TIMER_REG(compare):
> + return "KVM_REG_RISCV_TIMER_REG(compare)";
> + case KVM_REG_RISCV_TIMER_REG(state):
> + return "KVM_REG_RISCV_TIMER_REG(state)";
> + }
> +
> + TEST_FAIL("%s: Unknown timer reg id: 0x%llx", prefix, id);
> + return NULL;
> +}
> +
> +static const char *fp_f_id_to_str(const char *prefix, __u64 id)
> +{
> + /* reg_off is the offset into struct __riscv_f_ext_state */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_FP_F);
> +
> + switch (reg_off) {
> + case KVM_REG_RISCV_FP_F_REG(f[0]) ...
> + KVM_REG_RISCV_FP_F_REG(f[31]):
> + return strdup_printf("KVM_REG_RISCV_FP_F_REG(f[%lld])", reg_off);
> + case KVM_REG_RISCV_FP_F_REG(fcsr):
> + return "KVM_REG_RISCV_FP_F_REG(fcsr)";
> + }
> +
> + TEST_FAIL("%s: Unknown fp_f reg id: 0x%llx", prefix, id);
> + return NULL;
> +}
> +
> +static const char *fp_d_id_to_str(const char *prefix, __u64 id)
> +{
> + /* reg_off is the offset into struct __riscv_d_ext_state */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_FP_D);
> +
> + switch (reg_off) {
> + case KVM_REG_RISCV_FP_D_REG(f[0]) ...
> + KVM_REG_RISCV_FP_D_REG(f[31]):
> + return strdup_printf("KVM_REG_RISCV_FP_D_REG(f[%lld])", reg_off);
> + case KVM_REG_RISCV_FP_D_REG(fcsr):
> + return "KVM_REG_RISCV_FP_D_REG(fcsr)";
> + }
> +
> + TEST_FAIL("%s: Unknown fp_d reg id: 0x%llx", prefix, id);
> + return NULL;
> +}
> +
> +static const char *isa_ext_id_to_str(__u64 id)
> +{
> + /* reg_off is the offset into unsigned long kvm_isa_ext_arr[] */
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_ISA_EXT);
> +
> + static const char * const kvm_isa_ext_reg_name[] = {
> + "KVM_RISCV_ISA_EXT_A",
> + "KVM_RISCV_ISA_EXT_C",
> + "KVM_RISCV_ISA_EXT_D",
> + "KVM_RISCV_ISA_EXT_F",
> + "KVM_RISCV_ISA_EXT_H",
> + "KVM_RISCV_ISA_EXT_I",
> + "KVM_RISCV_ISA_EXT_M",
> + "KVM_RISCV_ISA_EXT_SVPBMT",
> + "KVM_RISCV_ISA_EXT_SSTC",
> + "KVM_RISCV_ISA_EXT_SVINVAL",
> + "KVM_RISCV_ISA_EXT_ZIHINTPAUSE",
> + "KVM_RISCV_ISA_EXT_ZICBOM",
> + "KVM_RISCV_ISA_EXT_ZICBOZ",
> + "KVM_RISCV_ISA_EXT_ZBB",
> + "KVM_RISCV_ISA_EXT_SSAIA",
> + };
> +
> + if (reg_off >= ARRAY_SIZE(kvm_isa_ext_reg_name)) {
> + /*
> + * isa_ext regs would grow regularly with new isa extension added, so
> + * just show "reg" to indicate a new extension.
> + */
> + return strdup_printf("%lld/* UNKNOWN */", reg_off);
> + }
> +
> + return kvm_isa_ext_reg_name[reg_off];
> +}
> +
> +static const char *sbi_ext_single_id_to_str(__u64 reg_off)
> +{
> + /* reg_off is KVM_RISCV_SBI_EXT_ID */
> + static const char * const kvm_sbi_ext_reg_name[] = {
> + "KVM_RISCV_SBI_EXT_V01",
> + "KVM_RISCV_SBI_EXT_TIME",
> + "KVM_RISCV_SBI_EXT_IPI",
> + "KVM_RISCV_SBI_EXT_RFENCE",
> + "KVM_RISCV_SBI_EXT_SRST",
> + "KVM_RISCV_SBI_EXT_HSM",
> + "KVM_RISCV_SBI_EXT_PMU",
> + "KVM_RISCV_SBI_EXT_EXPERIMENTAL",
> + "KVM_RISCV_SBI_EXT_VENDOR",
> + };
> +
> + if (reg_off >= ARRAY_SIZE(kvm_sbi_ext_reg_name)) {
> + /*
> + * sbi_ext regs would grow regularly with new sbi extension added, so
> + * just show "reg" to indicate a new extension.
> + */
> + return strdup_printf("%lld/* UNKNOWN */", reg_off);

This should include KVM_REG_RISCV_SBI_SINGLE

> + }
> +
> + return kvm_sbi_ext_reg_name[reg_off];

This should also include KVM_REG_RISCV_SBI_SINGLE

> +}
> +
> +static const char *sbi_ext_multi_id_to_str(__u64 reg_subtype, __u64 reg_off)
> +{
> + if (reg_off > KVM_REG_RISCV_SBI_MULTI_REG_LAST) {
> + /*
> + * sbi_ext regs would grow regularly with new sbi extension added, so
> + * just show "reg" to indicate a new extension.
> + */
> + return strdup_printf("%lld/* UNKNOWN */", reg_off);
> + }
> +
> + switch (reg_subtype) {
> + case KVM_REG_RISCV_SBI_MULTI_EN:
> + return strdup_printf("KVM_REG_RISCV_SBI_MULTI_EN | %lld", reg_off);
> + case KVM_REG_RISCV_SBI_MULTI_DIS:
> + return strdup_printf("KVM_REG_RISCV_SBI_MULTI_DIS | %lld", reg_off);
> + }
> +
> + return NULL;
> +}
> +
> +static const char *sbi_ext_id_to_str(const char *prefix, __u64 id)
> +{
> + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_SBI_EXT);
> + __u64 reg_subtype = reg_off & KVM_REG_RISCV_SUBTYPE_MASK;
> +
> + reg_off &= ~KVM_REG_RISCV_SUBTYPE_MASK;
> +
> + switch (reg_subtype) {
> + case KVM_REG_RISCV_SBI_SINGLE:
> + return sbi_ext_single_id_to_str(reg_off);
> + case KVM_REG_RISCV_SBI_MULTI_EN:
> + case KVM_REG_RISCV_SBI_MULTI_DIS:
> + return sbi_ext_multi_id_to_str(reg_subtype, reg_off);
> + }
> +
> + TEST_FAIL("%s: Unknown sbi ext subtype: 0x%llx", prefix, reg_subtype);
> + return NULL;
> +}
> +
> +void print_reg(const char *prefix, __u64 id)
> +{
> + const char *reg_size = NULL;
> +
> + TEST_ASSERT((id & KVM_REG_ARCH_MASK) == KVM_REG_RISCV,
> + "%s: KVM_REG_RISCV missing in reg id: 0x%llx", prefix, id);
> +
> + switch (id & KVM_REG_SIZE_MASK) {
> + case KVM_REG_SIZE_U32:
> + reg_size = "KVM_REG_SIZE_U32";
> + break;
> + case KVM_REG_SIZE_U64:
> + reg_size = "KVM_REG_SIZE_U64";
> + break;
> + case KVM_REG_SIZE_U128:
> + reg_size = "KVM_REG_SIZE_U128";
> + break;
> + default:
> + TEST_FAIL("%s: Unexpected reg size: 0x%llx in reg id: 0x%llx",
> + prefix, (id & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT, id);
> + }
> +
> + switch (id & KVM_REG_RISCV_TYPE_MASK) {
> + case KVM_REG_RISCV_CONFIG:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_CONFIG | %s,\n",
> + reg_size, config_id_to_str(id));
> + break;
> + case KVM_REG_RISCV_CORE:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_CORE | %s,\n",
> + reg_size, core_id_to_str(prefix, id));
> + break;
> + case KVM_REG_RISCV_CSR:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_CSR | %s,\n",
> + reg_size, csr_id_to_str(prefix, id));
> + break;
> + case KVM_REG_RISCV_TIMER:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_TIMER | %s,\n",
> + reg_size, timer_id_to_str(prefix, id));
> + break;
> + case KVM_REG_RISCV_FP_F:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_FP_F | %s,\n",
> + reg_size, fp_f_id_to_str(prefix, id));
> + break;
> + case KVM_REG_RISCV_FP_D:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_FP_D | %s,\n",
> + reg_size, fp_d_id_to_str(prefix, id));
> + break;
> + case KVM_REG_RISCV_ISA_EXT:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_ISA_EXT | %s,\n",
> + reg_size, isa_ext_id_to_str(id));
> + break;
> + case KVM_REG_RISCV_SBI_EXT:
> + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_SBI_EXT | %s,\n",
> + reg_size, sbi_ext_id_to_str(prefix, id));
> + break;
> + default:
> + TEST_FAIL("%s: Unexpected reg type: 0x%llx in reg id: 0x%llx", prefix,
> + (id & KVM_REG_RISCV_TYPE_MASK) >> KVM_REG_RISCV_TYPE_SHIFT, id);
> + }
> +}
> +
> +/*
> + * The current blessed list was primed with the output of kernel version
> + * v6.4-rc2 and then later updated with new registers.
> + */
> +static __u64 base_regs[] = {
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(isa),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(mvendorid),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(marchid),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(mimpid),

No need to wrap these lines. It looks better to go long. And the output of
print_reg() doesn't wrap and this should just be a copy+paste of that. But
I see print_reg() output wasn't used to generate these lists since...

> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.pc),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.ra),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.sp),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.gp),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.tp),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t0),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t1),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t2),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s0),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s1),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a0),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a1),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a2),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a3),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a4),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a5),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a6),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.a7),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s2),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s3),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s4),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s5),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s6),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s7),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s8),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s9),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s10),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.s11),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t3),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t4),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t5),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(regs.t6),

...all the above would just be indices rather than named registers. I
guess that's better for these registers.

> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CORE | KVM_REG_RISCV_CORE_REG(mode),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(sstatus),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(sie),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(stvec),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(sscratch),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(sepc),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(scause),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(stval),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(sip),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(satp),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_REG(scounteren),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(frequency),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(time),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(compare),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(state),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_A,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_C,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_D,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_F,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_H,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_I,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_M,

I think all the above should have the size KVM_REG_SIZE_ULONG. Please also
test with a 32-bit host.

> +};
> +
> +/*
> + * The rejects_set list registers that should skip set test.
> + * - KVM_REG_RISCV_TIMER_REG(state): set would fail if it was not initialized properly.
> + * - KVM_REG_RISCV_TIMER_REG(frequency): set not supported
> + * - KVM_REG_RISCV_CONFIG_REG(zicbom_block_size): set not supported
> + * - KVM_REG_RISCV_CONFIG_REG(zicboz_block_size): set not supported
> + * - KVM_RISCV_ISA_EXT_SVPBMT: set not supported
> + * - KVM_RISCV_ISA_EXT_SVINVA: set not supported
> + * - KVM_RISCV_ISA_EXT_SSAIA: set not supported
> + */
> +static __u64 base_rejects_set[] = {
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(zicbom_block_size),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_CONFIG |
> + KVM_REG_RISCV_CONFIG_REG(zicboz_block_size),

I wouldn't wrap these either.

> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(frequency),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(state),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVPBMT,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVINVAL,
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSAIA,

Also most of these should be KVM_REG_SIZE_ULONG.

> +};
> +
> +static __u64 fp_f_regs[] = {
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[0]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[1]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[2]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[3]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[4]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[5]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[6]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[7]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[8]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[9]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[10]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[11]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[12]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[13]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[14]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[15]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[16]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[17]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[18]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[19]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[20]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[21]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[22]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[23]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[24]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[25]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[26]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[27]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[28]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[29]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[30]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[31]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(fcsr),
> +};
> +
> +static __u64 fp_d_regs[] = {
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[0]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[1]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[2]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[3]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[4]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[5]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[6]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[7]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[8]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[9]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[10]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[11]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[12]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[13]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[14]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[15]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[16]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[17]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[18]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[19]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[20]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[21]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[22]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[23]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[24]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[25]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[26]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[27]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[28]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[29]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[30]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(f[31]),
> + KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_D | KVM_REG_RISCV_FP_D_REG(fcsr),
> +};
> +
> +#define BASE_SUBLIST \
> + {"base", .regs = base_regs, .regs_n = ARRAY_SIZE(base_regs), \
> + .rejects_set = base_rejects_set, .rejects_set_n = ARRAY_SIZE(base_rejects_set),}
> +#define FP_F_REGS_SUBLIST \
> + {"fp_f_regs", .capability = KVM_RISCV_ISA_EXT_F, .regs = fp_f_regs, \
> + .regs_n = ARRAY_SIZE(fp_f_regs),}
> +#define FP_D_REGS_SUBLIST \
> + {"fp_d_regs", .capability = KVM_RISCV_ISA_EXT_D, .regs = fp_d_regs, \
> + .regs_n = ARRAY_SIZE(fp_d_regs),}
> +
> +static struct vcpu_reg_list fp_f_d_config = {
> + .sublists = {
> + BASE_SUBLIST,
> + FP_F_REGS_SUBLIST,
> + FP_D_REGS_SUBLIST,
> + {0},
> + },
> +};

What about configs which include the zicbo* block size registers, AIA
register configs, and the ISA and SBI registers?

> +
> +struct vcpu_reg_list *vcpu_configs[] = {
> + &fp_f_d_config,
> +};
> +int vcpu_configs_n = ARRAY_SIZE(vcpu_configs);
> --
> 2.34.1
>

Thanks,
drew