| Message ID | 20190328095736.4480-1-peter.maydell@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [for-4.0] hw/arm/raspi: Diagnose requests for too much RAM | expand |
On Thu, 28 Mar 2019 at 09:57, Peter Maydell <peter.maydell@linaro.org> wrote: > > 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 <peter.maydell@linaro.org> > --- > 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); > + } No patch is so simple that it can't have a bug or that it's not necessary to run 'make check'. The condition in the if() should be ">", not ">=", as 1GB is both valid and the default... thanks -- PMM
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),
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 <peter.maydell@linaro.org> --- hw/arm/raspi.c | 7 +++++++ 1 file changed, 7 insertions(+)