From: Andrew Jones <ajones@ventanamicro.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, philmd@linaro.org
Subject: Re: [PATCH v2 05/19] target/riscv/cpu.c: add .instance_post_init()
Date: Mon, 11 Sep 2023 09:08:15 +0200 [thread overview]
Message-ID: <20230911-8dd0ed634180a4146b982df1@orel> (raw)
In-Reply-To: <20230906091647.1667171-6-dbarboza@ventanamicro.com>
On Wed, Sep 06, 2023 at 06:16:32AM -0300, Daniel Henrique Barboza wrote:
> All generic CPUs call riscv_cpu_add_user_properties(). The 'max' CPU
> calls riscv_init_max_cpu_extensions(). Both can be moved to a common
> instance_post_init() callback, implemented in riscv_cpu_post_init(),
> called by all CPUs. The call order then becomes:
>
> riscv_cpu_init() -> cpu_init() of each CPU -> .instance_post_init()
>
> In the near future riscv_cpu_post_init() will call the init() function
> of the current accelerator, providing a hook for KVM and TCG accel
> classes to change the init() process of the CPU.
Yes, this seems to be what x86 does, so presumably it'll work for riscv
too.
>
> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> ---
> target/riscv/cpu.c | 42 ++++++++++++++++++++++++++++++++----------
> 1 file changed, 32 insertions(+), 10 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 7569955c7e..4c6d595067 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -427,8 +427,6 @@ static void riscv_max_cpu_init(Object *obj)
> mlx = MXL_RV32;
> #endif
> set_misa(env, mlx, 0);
> - riscv_cpu_add_user_properties(obj);
> - riscv_init_max_cpu_extensions(obj);
> env->priv_ver = PRIV_VERSION_LATEST;
> #ifndef CONFIG_USER_ONLY
> set_satp_mode_max_supported(RISCV_CPU(obj), mlx == MXL_RV32 ?
> @@ -442,7 +440,6 @@ static void rv64_base_cpu_init(Object *obj)
> CPURISCVState *env = &RISCV_CPU(obj)->env;
> /* We set this in the realise function */
> set_misa(env, MXL_RV64, 0);
> - riscv_cpu_add_user_properties(obj);
> /* Set latest version of privileged specification */
> env->priv_ver = PRIV_VERSION_LATEST;
> #ifndef CONFIG_USER_ONLY
> @@ -566,7 +563,6 @@ static void rv128_base_cpu_init(Object *obj)
> CPURISCVState *env = &RISCV_CPU(obj)->env;
> /* We set this in the realise function */
> set_misa(env, MXL_RV128, 0);
> - riscv_cpu_add_user_properties(obj);
> /* Set latest version of privileged specification */
> env->priv_ver = PRIV_VERSION_LATEST;
> #ifndef CONFIG_USER_ONLY
> @@ -579,7 +575,6 @@ static void rv32_base_cpu_init(Object *obj)
> CPURISCVState *env = &RISCV_CPU(obj)->env;
> /* We set this in the realise function */
> set_misa(env, MXL_RV32, 0);
> - riscv_cpu_add_user_properties(obj);
> /* Set latest version of privileged specification */
> env->priv_ver = PRIV_VERSION_LATEST;
> #ifndef CONFIG_USER_ONLY
> @@ -1215,6 +1210,37 @@ static void riscv_cpu_set_irq(void *opaque, int irq, int level)
> }
> #endif /* CONFIG_USER_ONLY */
>
> +static bool riscv_cpu_is_dynamic(Object *cpu_obj)
> +{
> + return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL;
> +}
> +
> +static bool riscv_cpu_has_max_extensions(Object *cpu_obj)
> +{
> + return object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_MAX) != NULL;
> +}
> +
> +static bool riscv_cpu_has_user_properties(Object *cpu_obj)
> +{
> + if (kvm_enabled() &&
> + object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_HOST) != NULL) {
> + return true;
> + }
> +
> + return riscv_cpu_is_dynamic(cpu_obj);
> +}
> +
> +static void riscv_cpu_post_init(Object *obj)
> +{
> + if (riscv_cpu_has_user_properties(obj)) {
> + riscv_cpu_add_user_properties(obj);
> + }
> +
> + if (riscv_cpu_has_max_extensions(obj)) {
> + riscv_init_max_cpu_extensions(obj);
> + }
> +}
> +
> static void riscv_cpu_init(Object *obj)
> {
> RISCVCPU *cpu = RISCV_CPU(obj);
> @@ -1770,11 +1796,6 @@ static const struct SysemuCPUOps riscv_sysemu_ops = {
> };
> #endif
>
> -static bool riscv_cpu_is_dynamic(Object *cpu_obj)
> -{
> - return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL;
> -}
> -
> static void cpu_set_mvendorid(Object *obj, Visitor *v, const char *name,
> void *opaque, Error **errp)
> {
> @@ -2011,6 +2032,7 @@ static const TypeInfo riscv_cpu_type_infos[] = {
> .instance_size = sizeof(RISCVCPU),
> .instance_align = __alignof__(RISCVCPU),
> .instance_init = riscv_cpu_init,
> + .instance_post_init = riscv_cpu_post_init,
> .abstract = true,
> .class_size = sizeof(RISCVCPUClass),
> .class_init = riscv_cpu_class_init,
> --
> 2.41.0
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
next prev parent reply other threads:[~2023-09-11 7:09 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-06 9:16 [PATCH v2 00/19] riscv: split TCG/KVM accelerators from cpu.c Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 01/19] target/riscv: introduce TCG AccelCPUClass Daniel Henrique Barboza
2023-09-19 9:51 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 02/19] target/riscv: move riscv_cpu_realize_tcg() to TCG::cpu_realizefn() Daniel Henrique Barboza
2023-09-19 9:54 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 03/19] target/riscv: move riscv_cpu_validate_set_extensions() to tcg-cpu.c Daniel Henrique Barboza
2023-09-19 10:59 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 04/19] target/riscv: move riscv_tcg_ops " Daniel Henrique Barboza
2023-09-19 11:08 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 05/19] target/riscv/cpu.c: add .instance_post_init() Daniel Henrique Barboza
2023-09-11 7:08 ` Andrew Jones [this message]
2023-09-19 9:16 ` LIU Zhiwei
2023-09-19 16:07 ` Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 06/19] target/riscv: move 'host' CPU declaration to kvm.c Daniel Henrique Barboza
2023-09-19 11:11 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 07/19] target/riscv/cpu.c: mark extensions arrays as 'const' Daniel Henrique Barboza
2023-09-19 11:19 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 08/19] target/riscv: move riscv_cpu_add_kvm_properties() to kvm.c Daniel Henrique Barboza
2023-09-19 11:25 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 09/19] target/riscv: make riscv_add_satp_mode_properties() public Daniel Henrique Barboza
2023-09-11 7:09 ` Andrew Jones
2023-09-19 11:26 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 10/19] target/riscv: remove kvm-stub.c Daniel Henrique Barboza
2023-09-06 10:23 ` Philippe Mathieu-Daudé
2023-09-11 7:49 ` Andrew Jones
2023-09-11 9:04 ` Andrew Jones
2023-09-11 12:23 ` Daniel Henrique Barboza
2023-09-12 10:48 ` Daniel Henrique Barboza
2023-09-12 11:15 ` Philippe Mathieu-Daudé
2023-09-12 12:03 ` Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 11/19] target/riscv: introduce KVM AccelCPUClass Daniel Henrique Barboza
2023-09-11 7:52 ` Andrew Jones
2023-09-19 11:37 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 12/19] target/riscv: move KVM only files to kvm subdir Daniel Henrique Barboza
2023-09-19 11:37 ` LIU Zhiwei
2023-09-06 9:16 ` [PATCH v2 13/19] target/riscv/kvm: do not use riscv_cpu_add_misa_properties() Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 14/19] target/riscv/cpu.c: export set_misa() Daniel Henrique Barboza
2023-09-06 10:18 ` Philippe Mathieu-Daudé
2023-09-11 7:54 ` Andrew Jones
2023-09-06 9:16 ` [PATCH v2 15/19] target/riscv/tcg: introduce tcg_cpu_instance_init() Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 16/19] target/riscv/cpu.c: make misa_ext_cfgs[] 'const' Daniel Henrique Barboza
2023-09-11 7:56 ` Andrew Jones
2023-09-06 9:16 ` [PATCH v2 17/19] target/riscv/tcg: move riscv_cpu_add_misa_properties() to tcg-cpu.c Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 18/19] target/riscv/cpu.c: export isa_edata_arr[] Daniel Henrique Barboza
2023-09-06 9:16 ` [PATCH v2 19/19] target/riscv/cpu: move priv spec functions to tcg-cpu.c Daniel Henrique Barboza
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