zap identity mappings after init #64
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Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
Do not keep final, global cr3 variable in .data.init section. When init sections are being reclaimed, this breaks pagetables interface. Instead, for SMP AP booting, use dedicated ap_cr3 variable, which can be reclaimed after SMP initialization. Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
* Rename smp_init() to init_smp() to follow naming convention * Put boot_cpu() and init_smp() into the .text.init section Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
* PMM:
- Add reclaim_frame() non-static wrapper over add_frame();
it adds a frame being reclaimed to the list of free frames.
* Compiler:
- Add IS_INIT_SECTION() macro; it decides, if section is an init
section, based on its name.
* Setup:
- Modify zap_boot_mappings() to iterate over all defined memory
regions and unmap plus reclaim all frames belonging to identity
mapped init sections. Additionally, zero-out non-text sections.
Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
wipawel
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bjoernd
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Aug 24, 2020
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*Issue #5 *
Description of changes:
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