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Kernel: Annotate kernel_base and friends as READONLY_AFTER_INIT

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We don't want kernel_base to be modifiable by an attacker or a stray
memory scribbler bug, so lets mark it as READONLY_AFTER_INIT.
This commit is contained in:
Brian Gianforcaro 2021-07-23 08:24:55 -07:00 committed by Andreas Kling
parent fa448456a9
commit 8acbe03342
Notes: sideshowbarker 2024-07-18 08:29:07 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/8acbe033427
Pull-request: https://github.com/SerenityOS/serenity/pull/8963
1 changed files with 3 additions and 3 deletions
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6
Kernel/init.cpp
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@ -107,9 +107,9 @@ static Processor s_bsp_processor; // global but let's keep it "private"
// init_stage2() function. Initialization continues there.
extern "C" {
PhysicalAddress start_of_prekernel_image;
PhysicalAddress end_of_prekernel_image;
FlatPtr kernel_base;
READONLY_AFTER_INIT PhysicalAddress start_of_prekernel_image;
READONLY_AFTER_INIT PhysicalAddress end_of_prekernel_image;
READONLY_AFTER_INIT FlatPtr kernel_base;
#if ARCH(X86_64)
PhysicalAddress boot_pml4t;
#endif