From: Alistair Francis <alistair23@gmail.com>
To: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Cc: qemu-devel@nongnu.org, qemu-riscv@nongnu.org,
alistair.francis@wdc.com, bmeng@tinylab.org,
liweiwei@iscas.ac.cn, zhiwei_liu@linux.alibaba.com,
palmer@rivosinc.com, ajones@ventanamicro.com
Subject: Re: [PATCH v2 08/18] target/riscv: handle mvendorid/marchid/mimpid for KVM CPUs
Date: Thu, 22 Jun 2023 11:16:41 +1000 [thread overview]
Message-ID: <CAKmqyKNr6Q-xafuKwLiZPK+LvRAgd_oOm7Av13wuQM6_ksZAwQ@mail.gmail.com> (raw)
In-Reply-To: <20230613205857.495165-9-dbarboza@ventanamicro.com>
On Wed, Jun 14, 2023 at 7:00 AM Daniel Henrique Barboza
<dbarboza@ventanamicro.com> wrote:
>
> After changing user validation for mvendorid/marchid/mimpid to guarantee
> that the value is validated on user input time, coupled with the work in
> fetching KVM default values for them by using a scratch CPU, we're
> certain that the values in cpu->cfg.(mvendorid|marchid|mimpid) are
> already good to be written back to KVM.
>
> There's no need to write the values back for 'host' type CPUs since the
> values can't be changed, so let's do that just for generic CPUs.
>
> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> target/riscv/kvm.c | 31 +++++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
> index cd2974c663..602727cdfd 100644
> --- a/target/riscv/kvm.c
> +++ b/target/riscv/kvm.c
> @@ -495,6 +495,33 @@ void kvm_arch_init_irq_routing(KVMState *s)
> {
> }
>
> +static int kvm_vcpu_set_machine_ids(RISCVCPU *cpu, CPUState *cs)
> +{
> + CPURISCVState *env = &cpu->env;
> + uint64_t id;
> + int ret;
> +
> + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
> + KVM_REG_RISCV_CONFIG_REG(mvendorid));
> + ret = kvm_set_one_reg(cs, id, &cpu->cfg.mvendorid);
> + if (ret != 0) {
> + return ret;
> + }
> +
> + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
> + KVM_REG_RISCV_CONFIG_REG(marchid));
> + ret = kvm_set_one_reg(cs, id, &cpu->cfg.marchid);
> + if (ret != 0) {
> + return ret;
> + }
> +
> + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
> + KVM_REG_RISCV_CONFIG_REG(mimpid));
> + ret = kvm_set_one_reg(cs, id, &cpu->cfg.mimpid);
> +
> + return ret;
> +}
> +
> int kvm_arch_init_vcpu(CPUState *cs)
> {
> int ret = 0;
> @@ -513,6 +540,10 @@ int kvm_arch_init_vcpu(CPUState *cs)
> }
> env->misa_ext = isa;
>
> + if (!object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) {
> + ret = kvm_vcpu_set_machine_ids(cpu, cs);
> + }
> +
> return ret;
> }
>
> --
> 2.40.1
>
>
next prev parent reply other threads:[~2023-06-22 1:17 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-13 20:58 [PATCH v2 00/18] target/riscv, KVM: fixes and enhancements Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 01/18] target/riscv: skip features setup for KVM CPUs Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 02/18] hw/riscv/virt.c: skip 'mmu-type' FDT if satp mode not set Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 03/18] target/riscv/cpu.c: restrict 'mvendorid' value Daniel Henrique Barboza
2023-06-22 1:07 ` Alistair Francis
2023-06-13 20:58 ` [PATCH v2 04/18] target/riscv/cpu.c: restrict 'mimpid' value Daniel Henrique Barboza
2023-06-22 1:08 ` Alistair Francis
2023-06-13 20:58 ` [PATCH v2 05/18] target/riscv/cpu.c: restrict 'marchid' value Daniel Henrique Barboza
2023-06-22 1:10 ` Alistair Francis
2023-06-13 20:58 ` [PATCH v2 06/18] target/riscv: use KVM scratch CPUs to init KVM properties Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 07/18] target/riscv: read marchid/mimpid in kvm_riscv_init_machine_ids() Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 08/18] target/riscv: handle mvendorid/marchid/mimpid for KVM CPUs Daniel Henrique Barboza
2023-06-22 1:16 ` Alistair Francis [this message]
2023-06-13 20:58 ` [PATCH v2 09/18] linux-headers: Update to v6.4-rc1 Daniel Henrique Barboza
2023-06-22 1:18 ` Alistair Francis
2023-06-13 20:58 ` [PATCH v2 10/18] target/riscv/kvm.c: init 'misa_ext_mask' with scratch CPU Daniel Henrique Barboza
2023-06-22 1:34 ` Alistair Francis
2023-06-13 20:58 ` [PATCH v2 11/18] target/riscv/cpu: add misa_ext_infos[] Daniel Henrique Barboza
2023-06-19 9:05 ` Andrew Jones
2023-06-13 20:58 ` [PATCH v2 12/18] target/riscv: add KVM specific MISA properties Daniel Henrique Barboza
2023-06-19 9:17 ` Andrew Jones
2023-06-13 20:58 ` [PATCH v2 13/18] target/riscv/kvm.c: update KVM MISA bits Daniel Henrique Barboza
2023-06-19 9:30 ` Andrew Jones
2023-06-13 20:58 ` [PATCH v2 14/18] target/riscv/kvm.c: add multi-letter extension KVM properties Daniel Henrique Barboza
2023-06-19 9:44 ` Andrew Jones
2023-06-13 20:58 ` [PATCH v2 15/18] target/riscv: make riscv_isa_string_ext() KVM compatible Daniel Henrique Barboza
2023-06-19 9:54 ` Andrew Jones
2023-06-20 22:05 ` Daniel Henrique Barboza
2023-06-21 8:20 ` Andrew Jones
2023-06-21 9:13 ` Andrew Jones
2023-06-21 9:43 ` Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 16/18] target/riscv: update multi-letter extension KVM properties Daniel Henrique Barboza
2023-06-13 20:58 ` [PATCH v2 17/18] target/riscv/kvm.c: add kvmconfig_get_cfg_addr() helper Daniel Henrique Barboza
2023-06-19 9:55 ` Andrew Jones
2023-06-13 20:58 ` [PATCH v2 18/18] target/riscv/kvm.c: read/write (cbom|cboz)_blocksize in KVM Daniel Henrique Barboza
2023-06-19 12:33 ` Andrew Jones
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