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Re: [Qemu-devel] [PATCH for-4.0] hw/arm/raspi: Diagnose requests for too
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [Qemu-devel] [PATCH for-4.0] hw/arm/raspi: Diagnose requests for too much RAM |
Date: |
Thu, 28 Mar 2019 11:00:26 +0100 |
Le jeu. 28 mars 2019 10:57, Peter Maydell <address@hidden> a
écrit :
> The Raspberry Pi boards have a physical memory map which does
> not allow for more than 1GB of RAM. Currently if the user tries
> to ask for more then we fail in a confusing way:
>
> $ qemu-system-aarch64 --machine raspi3 -m 8G
> Unexpected error in visit_type_uintN() at qapi/qapi-visit-core.c:164:
> qemu-system-aarch64: Parameter 'vcram-base' expects uint32_t
> Aborted (core dumped)
>
> Catch this earlier and diagnose it with a more friendly message:
> $ qemu-system-aarch64 --machine raspi3 -m 8G
> qemu-system-aarch64: Requested ram size is too large for this machine:
> maximum is 1GB
>
> Fixes: https://bugs.launchpad.net/qemu/+bug/1794187
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> hw/arm/raspi.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
> index 66899c28dc1..c7a18a319bc 100644
> --- a/hw/arm/raspi.c
> +++ b/hw/arm/raspi.c
> @@ -12,6 +12,7 @@
> */
>
> #include "qemu/osdep.h"
> +#include "qemu/units.h"
> #include "qapi/error.h"
> #include "qemu-common.h"
> #include "cpu.h"
> @@ -175,6 +176,12 @@ static void raspi_init(MachineState *machine, int
> version)
> BusState *bus;
> DeviceState *carddev;
>
> + if (machine->ram_size >= 1 * GiB) {
> + error_report("Requested ram size is too large for this machine: "
> + "maximum is 1GB");
> + exit(1);
> + }
> +
> object_initialize(&s->soc, sizeof(s->soc),
> version == 3 ? TYPE_BCM2837 : TYPE_BCM2836);
> object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
> --
> 2.20.1
>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
>