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From: David Gibson <david@gibson.dropbear.id.au>
To: Nicholas Piggin <npiggin@gmail.com>
Cc: "Alexey Kardashevskiy" <aik@ozlabs.ru>,
	"Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>,
	qemu-devel@nongnu.org, "Greg Kurz" <groug@kaod.org>,
	"Cédric Le Goater" <clg@fr.ibm.com>,
	"Ganesh Goudar" <ganeshgr@linux.ibm.com>,
	qemu-ppc@nongnu.org
Subject: Re: [PATCH 1/5] ppc/spapr: tweak change system reset helper
Date: Thu, 26 Mar 2020 11:04:33 +1100
Message-ID: <20200326000433.GI36889@umbus.fritz.box> (raw)
In-Reply-To: <20200325144147.221875-2-npiggin@gmail.com>


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On Thu, Mar 26, 2020 at 12:41:43AM +1000, Nicholas Piggin wrote:
> Rather than have the helper take an optional vector address
> override, instead have its caller modify env->nip itself.
> This is more consistent when adding pnv nmi support, and also
> with mce injection added later.
> 
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Applied to ppc-for-5.1.

> ---
>  hw/ppc/spapr.c           | 9 ++++++---
>  target/ppc/cpu.h         | 2 +-
>  target/ppc/excp_helper.c | 5 +----
>  3 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index 9a2bd501aa..785c41d205 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -3385,13 +3385,13 @@ static void spapr_machine_finalizefn(Object *obj)
>  void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg)
>  {
>      SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
> +    PowerPCCPU *cpu = POWERPC_CPU(cs);
> +    CPUPPCState *env = &cpu->env;
>  
>      cpu_synchronize_state(cs);
>      /* If FWNMI is inactive, addr will be -1, which will deliver to 0x100 */
>      if (spapr->fwnmi_system_reset_addr != -1) {
>          uint64_t rtas_addr, addr;
> -        PowerPCCPU *cpu = POWERPC_CPU(cs);
> -        CPUPPCState *env = &cpu->env;
>  
>          /* get rtas addr from fdt */
>          rtas_addr = spapr_get_rtas_addr();
> @@ -3405,7 +3405,10 @@ void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg)
>          stq_be_phys(&address_space_memory, addr + sizeof(uint64_t), 0);
>          env->gpr[3] = addr;
>      }
> -    ppc_cpu_do_system_reset(cs, spapr->fwnmi_system_reset_addr);
> +    ppc_cpu_do_system_reset(cs);
> +    if (spapr->fwnmi_system_reset_addr != -1) {
> +        env->nip = spapr->fwnmi_system_reset_addr;
> +    }
>  }
>  
>  static void spapr_nmi(NMIState *n, int cpu_index, Error **errp)
> diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
> index 88d9449555..f4a5304d43 100644
> --- a/target/ppc/cpu.h
> +++ b/target/ppc/cpu.h
> @@ -1220,7 +1220,7 @@ int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
>  int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
>                                 int cpuid, void *opaque);
>  #ifndef CONFIG_USER_ONLY
> -void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector);
> +void ppc_cpu_do_system_reset(CPUState *cs);
>  void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector);
>  extern const VMStateDescription vmstate_ppc_cpu;
>  #endif
> diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
> index 08bc885ca6..7f2b5899d3 100644
> --- a/target/ppc/excp_helper.c
> +++ b/target/ppc/excp_helper.c
> @@ -961,15 +961,12 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>      }
>  }
>  
> -void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector)
> +void ppc_cpu_do_system_reset(CPUState *cs)
>  {
>      PowerPCCPU *cpu = POWERPC_CPU(cs);
>      CPUPPCState *env = &cpu->env;
>  
>      powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
> -    if (vector != -1) {
> -        env->nip = vector;
> -    }
>  }
>  
>  void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25 14:41 [PATCH 0/5] ppc: sreset and machine check injection Nicholas Piggin
2020-03-25 14:41 ` [PATCH 1/5] ppc/spapr: tweak change system reset helper Nicholas Piggin
2020-03-25 16:14   ` [EXTERNAL] " Cédric Le Goater
2020-03-26  0:04   ` David Gibson [this message]
2020-03-25 14:41 ` [PATCH 2/5] ppc/pnv: Add support for NMI interface Nicholas Piggin
2020-03-25 16:38   ` Cédric Le Goater
2020-04-03  7:57     ` Nicholas Piggin
2020-04-03 13:12       ` Nicholas Piggin
2020-04-03 15:47         ` Cédric Le Goater
2020-04-04  1:58           ` Nicholas Piggin
2020-03-26  0:15   ` David Gibson
2020-03-31  3:07   ` Alexey Kardashevskiy
2020-03-31  3:14     ` David Gibson
2020-03-25 14:41 ` [PATCH 3/5] nmi: add MCE class for implementing machine check injection commands Nicholas Piggin
2020-03-25 16:46   ` Cédric Le Goater
2020-03-31  0:22   ` David Gibson
2020-04-03  8:04     ` Nicholas Piggin
2020-04-06  6:45       ` David Gibson
2020-03-25 14:41 ` [PATCH 4/5] ppc/spapr: Implement mce injection Nicholas Piggin
2020-03-25 16:38   ` Cédric Le Goater
2020-03-25 14:41 ` [PATCH 5/5] ppc/pnv: " Nicholas Piggin
2020-03-25 16:39   ` [EXTERNAL] " Cédric Le Goater
2020-04-03  8:07     ` Nicholas Piggin
2020-03-25 16:42 ` [PATCH 0/5] ppc: sreset and machine check injection Cédric Le Goater

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