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| author | Mark Cave-Ayland <mark.caveayland@nutanix.com> | 2025-08-28 12:09:45 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-08-29 11:20:47 +0200 |
| commit | 483a232e0431f19a4d6596be59c1d51370407249 (patch) | |
| tree | 20ab43ac30f90df4a3373b8e56d38220409e1d37 | |
| parent | e1e2909f8e74051a34a044940f90d4650b6e784a (diff) | |
| download | qemu-483a232e0431f19a4d6596be59c1d51370407249.zip qemu-483a232e0431f19a4d6596be59c1d51370407249.tar.gz qemu-483a232e0431f19a4d6596be59c1d51370407249.tar.bz2 | |
hw/i386/pc_piix.c: restrict isapc machine to 3.5G memory
Since the isapc machine is now limited to using 32-bit CPUs, add a hard restriction
so that the machine cannot be started with more than 3.5G memory. This matches the
default value for max_ram_below_4g if not specified and provides consistent
behaviour betweem TCG and KVM accelerators.
Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Link: https://lore.kernel.org/r/20250828111057.468712-3-mark.caveayland@nutanix.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/i386/pc_piix.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 8f5fb3c..9a3b5d8 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -461,6 +461,12 @@ static void pc_init_isa(MachineState *machine) warn_report("-cpu host is invalid for isapc machine, using pentium3"); } + if (machine->ram_size > 3.5 * GiB) { + error_report("Too much memory for this machine: %" PRId64 " MiB, " + "maximum 3584 MiB", machine->ram_size / MiB); + exit(1); + } + pc_init1(machine, NULL); } #endif |