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Ramdisk marked as Usable region in MemoryRegions #445

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#446
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Ramdisk marked as Usable region in MemoryRegions#445
#446
@Wasabi375

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@Wasabi375
Wasabi375
opened on Jun 9, 2024

bootloader/common/src/legacy_memory_region.rs

Lines 163 to 171 in e10010e

// check if region overlaps with kernel or ramdisk
let kernel_slice_end = kernel_slice_start + kernel_slice_len;
let ramdisk_slice_end = ramdisk_slice_start.map(|s| s + ramdisk_slice_len);
if region.kind == MemoryRegionKind::Usable
&& kernel_slice_start < region.end
&& kernel_slice_end > region.start
{
// region overlaps with kernel -> we might need to split it

bootloader/common/src/legacy_memory_region.rs

Lines 205 to 208 in e10010e

} else if region.kind == MemoryRegionKind::Usable
&& ramdisk_slice_start.map(|s| s < region.end).unwrap_or(false)
&& ramdisk_slice_end.map(|e| e > region.start).unwrap_or(false)
{

This assumes that the memory region containing the kernel and the region containing the ramdisk are distinct. However if both fall within the same region only the kernel is marked as a bootloader region and the ramdisk is marked as usable.

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