Re: [Qemu-devel] [PATCH] ARM GIC and CPU state saving/loading fix

["Andreas Färber" <afaerber@suse.de>]

Am 14.10.2011 15:25, schrieb Dmitry Koshelev:
> Fixes two trivial indices errors.
> 
> Signed-off-by: Dmitry Koshelev <karaghiozis@gmail.com>
> ---
>  hw/arm_gic.c         |   12 ++++++------
>  target-arm/machine.c |    4 ++--
>  2 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/arm_gic.c b/hw/arm_gic.c
> index 8286a28..ba05131 100644
> --- a/hw/arm_gic.c
> +++ b/hw/arm_gic.c
> @@ -662,9 +662,6 @@ static void gic_save(QEMUFile *f, void *opaque)
>      qemu_put_be32(f, s->enabled);
>      for (i = 0; i < NUM_CPU(s); i++) {
>          qemu_put_be32(f, s->cpu_enabled[i]);
> -#ifndef NVIC
> -        qemu_put_be32(f, s->irq_target[i]);
> -#endif
>          for (j = 0; j < 32; j++)
>              qemu_put_be32(f, s->priority1[j][i]);
>          for (j = 0; j < GIC_NIRQ; j++)
> @@ -678,6 +675,9 @@ static void gic_save(QEMUFile *f, void *opaque)
>          qemu_put_be32(f, s->priority2[i]);
>      }
>      for (i = 0; i < GIC_NIRQ; i++) {
> +#ifndef NVIC
> +        qemu_put_be32(f, s->irq_target[i]);
> +#endif
>          qemu_put_byte(f, s->irq_state[i].enabled);
>          qemu_put_byte(f, s->irq_state[i].pending);
>          qemu_put_byte(f, s->irq_state[i].active);
> @@ -699,9 +699,6 @@ static int gic_load(QEMUFile *f, void *opaque, int
> version_id)
>      s->enabled = qemu_get_be32(f);
>      for (i = 0; i < NUM_CPU(s); i++) {
>          s->cpu_enabled[i] = qemu_get_be32(f);
> -#ifndef NVIC
> -        s->irq_target[i] = qemu_get_be32(f);
> -#endif
>          for (j = 0; j < 32; j++)
>              s->priority1[j][i] = qemu_get_be32(f);
>          for (j = 0; j < GIC_NIRQ; j++)
> @@ -715,6 +712,9 @@ static int gic_load(QEMUFile *f, void *opaque, int
> version_id)
>          s->priority2[i] = qemu_get_be32(f);
>      }
>      for (i = 0; i < GIC_NIRQ; i++) {
> +#ifndef NVIC
> +        s->irq_target[i] = qemu_get_be32(f);
> +#endif
>          s->irq_state[i].enabled = qemu_get_byte(f);
>          s->irq_state[i].pending = qemu_get_byte(f);
>          s->irq_state[i].active = qemu_get_byte(f);

This part:

Reviewed-by: Andreas Färber <afaerber@suse.de>

The definition is int irq_target[GIC_NIRQ] and not [NCPU] as others.

The following part however is totally unrelated and should be put in a
separate patch. Both are non-trivial, please cc Peter Maydell instead.

> diff --git a/target-arm/machine.c b/target-arm/machine.c
> index 3925d3a..1b1b3ec 100644
> --- a/target-arm/machine.c
> +++ b/target-arm/machine.c
> @@ -53,7 +53,7 @@ void cpu_save(QEMUFile *f, void *opaque)
>      qemu_put_be32(f, env->features);
> 
>      if (arm_feature(env, ARM_FEATURE_VFP)) {
> -        for (i = 0;  i < 16; i++) {
> +        for (i = 16;  i < 32; i++) {
>              CPU_DoubleU u;
>              u.d = env->vfp.regs[i];
>              qemu_put_be32(f, u.l.upper);
> @@ -175,7 +175,7 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
>          env->vfp.vec_stride = qemu_get_be32(f);
> 
>          if (arm_feature(env, ARM_FEATURE_VFP3)) {
> -            for (i = 0;  i < 16; i++) {
> +            for (i = 16;  i < 32; i++) {
>                  CPU_DoubleU u;
>                  u.l.upper = qemu_get_be32(f);
>                  u.l.lower = qemu_get_be32(f);
> 

This does not look fully right either way... In addition, it touches the
storage format so any change there may require a version bump.

Andreas

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