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Prekernel: Make sure the last few bytes of the kernel image are mapped

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Depending on the exact layout of the .ksyms section the kernel would
fail to boot because the kernel_load_end variable didn't account for the
section's size.
This commit is contained in:
Gunnar Beutner 2021-07-19 16:21:59 +02:00 • committed by Andreas Kling
commit 3678f78bfb
Notes: sideshowbarker 2024-07-18 08:44:37 +09:00
1 changed files with 1 additions and 1 deletions
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2
Kernel/Prekernel/init.cpp
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@ -72,7 +72,7 @@ extern "C" [[noreturn]] void init()
ElfW(Phdr)* kernel_program_headers = (ElfW(Phdr*))((char*)kernel_elf_header + kernel_elf_header->e_phoff);
FlatPtr kernel_load_base = kernel_program_headers[0].p_vaddr;
FlatPtr kernel_load_end = kernel_program_headers[kernel_elf_header->e_phnum - 1].p_vaddr;
FlatPtr kernel_load_end = kernel_program_headers[kernel_elf_header->e_phnum - 1].p_vaddr + kernel_program_headers[kernel_elf_header->e_phnum - 1].p_memsz;
// align to 1GB
kernel_load_base &= ~(FlatPtr)0x3fffffff;