hw/sparc64/niagara: use int64_t for vdisk size to avoid truncation
blk_getlength() returns int64_t, but niagara_init() stored it in an int, truncating the if=pflash virtual-ramdisk size for images >= 2 GiB. A ~4 GiB image truncated to 0/negative, failed the `size > 0` check, and exit(1)'d before the CPU ran, ending with: qemu-system-sparc64: could not load ram disk Signed-off-by: Dmitry Pimenov <sun4qemu@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com> Message-ID: <20260710222350.9185-1-sun4qemu@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Dmitry Pimenov committed
Jul 11, 2026 at 00:23 UTC
76dbe26fd6500a94b85bf0f3a39d73b72f5fab7b
1 file changed
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-1
hw/sparc64/niagara.c
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-1
@@ -137,7 +137,7 @@ static void niagara_init(MachineState *machine)
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outside of the partition RAM */
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if (dinfo) {
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BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
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- int size = blk_getlength(blk);
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+ int64_t size = blk_getlength(blk);
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if (size > 0) {
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memory_region_init_ram(&s->vdisk_ram, NULL, "sun4v_vdisk.ram", size,
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&error_fatal);