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Kernel: Make UNMAP_AFTER_INIT imply NEVER_INLINE as well

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We want to make sure these functions actually do get unmapped. If they
were inlined somewhere, the inlined version(s) would remain mapped.

Thanks to "thislooksfun" for the suggestion! :^)
This commit is contained in:
Andreas Kling 2021-02-21 00:42:16 +01:00
parent f23b29f605
commit 1bc859fb68
Notes: sideshowbarker 2024-07-18 22:04:46 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/1bc859fb688
2 changed files with 3 additions and 3 deletions
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4
Kernel/Arch/i386/CPU.cpp
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@ -720,12 +720,12 @@ void exit_trap(TrapFrame* trap)
return Processor::current().exit_trap(*trap);
}
NEVER_INLINE UNMAP_AFTER_INIT void write_cr0(u32 value)
UNMAP_AFTER_INIT void write_cr0(u32 value)
{
asm volatile("movl %%eax, %%cr0" ::"a"(value));
}
NEVER_INLINE UNMAP_AFTER_INIT void write_cr4(u32 value)
UNMAP_AFTER_INIT void write_cr4(u32 value)
{
asm volatile("movl %%eax, %%cr4" ::"a"(value));
}

2
Kernel/Arch/i386/CPU.h
View file

@ -35,7 +35,7 @@
#include <LibC/sys/arch/i386/regs.h>
#define READONLY_AFTER_INIT __attribute__((section(".ro_after_init")))
#define UNMAP_AFTER_INIT __attribute__((section(".unmap_after_init")))
#define UNMAP_AFTER_INIT NEVER_INLINE __attribute__((section(".unmap_after_init")))
#define PAGE_SIZE 4096
#define GENERIC_INTERRUPT_HANDLERS_COUNT (256 - IRQ_VECTOR_BASE)