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| author | Bibo Mao <maobibo@loongson.cn> | 2024-09-29 15:04:05 +0800 |
|---|---|---|
| committer | Song Gao <gaosong@loongson.cn> | 2024-11-02 15:20:41 +0800 |
| commit | a45df286013270868e6d6e94c287dff19339a4b4 (patch) | |
| tree | e77acf3be0b1c0255da6ce9fb0d9380c07bca899 /target/loongarch/machine.c | |
| parent | c23a53d89429d9181bc0423e2708851b02b9ff4a (diff) | |
| download | focaccia-qemu-a45df286013270868e6d6e94c287dff19339a4b4.tar.gz focaccia-qemu-a45df286013270868e6d6e94c287dff19339a4b4.zip | |
target/loongarch: Implement lbt registers save/restore function
Six registers scr0 - scr3, eflags and ftop are added in percpu vmstate. And two functions kvm_loongarch_get_lbt/kvm_loongarch_put_lbt are added to save/restore lbt registers. Signed-off-by: Bibo Mao <maobibo@loongson.cn> Reviewed-by: Song Gao <gaosong@loongson.cn> Message-Id: <20240929070405.235200-3-maobibo@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn>
Diffstat (limited to 'target/loongarch/machine.c')
| -rw-r--r-- | target/loongarch/machine.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/loongarch/machine.c b/target/loongarch/machine.c index 08a7fa5370..3d5c84ae9c 100644 --- a/target/loongarch/machine.c +++ b/target/loongarch/machine.c @@ -110,6 +110,29 @@ static const VMStateDescription vmstate_lasx = { }, }; +static bool lbt_needed(void *opaque) +{ + LoongArchCPU *cpu = opaque; + + return !!FIELD_EX64(cpu->env.cpucfg[2], CPUCFG2, LBT_ALL); +} + +static const VMStateDescription vmstate_lbt = { + .name = "cpu/lbt", + .version_id = 0, + .minimum_version_id = 0, + .needed = lbt_needed, + .fields = (const VMStateField[]) { + VMSTATE_UINT64(env.lbt.scr0, LoongArchCPU), + VMSTATE_UINT64(env.lbt.scr1, LoongArchCPU), + VMSTATE_UINT64(env.lbt.scr2, LoongArchCPU), + VMSTATE_UINT64(env.lbt.scr3, LoongArchCPU), + VMSTATE_UINT32(env.lbt.eflags, LoongArchCPU), + VMSTATE_UINT32(env.lbt.ftop, LoongArchCPU), + VMSTATE_END_OF_LIST() + }, +}; + #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY) static bool tlb_needed(void *opaque) { @@ -219,6 +242,7 @@ const VMStateDescription vmstate_loongarch_cpu = { #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY) &vmstate_tlb, #endif + &vmstate_lbt, NULL } }; |