11 Commits

Author	SHA1	Message	Date
Jonas 'Sortie' Termansen	2e3d7c45af	Add paging no-execute and write protection support. ... Enable the NX bit on x86_64 and set if not PROT_EXEC and enable the write protection mode (CR0.WP) that disables the default behavior where the kernel is able to write to read-only memory. Fix kernel broken assumptions it can access read-only memory and take care to never set PROT_KWRITE on user-space pages unless PROT_WRITE is also set, otherwise user-space will be able to write to read-only memory. This achieves X^W in the whole system except for the core kernel itself as it is currently don't know the purpose of pages when identity mapping the first 4 MiB.	2016-01-25 17:39:57 +01:00
Jonas 'Sortie' Termansen	73a182f80c	Add interface to get 32-bit pages.	2015-08-28 15:24:54 +02:00
Jonas 'Sortie' Termansen	77467b7768	Detect physical memory before initializing the kernel log.	2015-08-21 21:25:00 +02:00
Jonas 'Sortie' Termansen	218875eb79	Initialize paging before KernelInit.	2015-08-21 21:25:00 +02:00
Jonas 'Sortie' Termansen	749d123331	Maintain counts of physical frames used for particular purposes.	2014-11-26 22:27:04 +01:00
Jonas 'Sortie' Termansen	25e07a9083	Refactor kernel interrupt and thread register support.	2014-11-18 20:33:21 +01:00
Jonas 'Sortie' Termansen	79f7312a49	Fix page protection bugs.	2014-11-06 00:09:55 +01:00
Jonas 'Sortie' Termansen	8c00a4145c	Refactor kernel PAT, MTRR, and MSR usage.	2014-03-17 19:22:13 +01:00
Jonas 'Sortie' Termansen	093d583dea	Fix print format warnings in kernel/x86-family/memorymanagement.cpp.	2014-03-01 14:37:42 +01:00
Jonas 'Sortie' Termansen	a099f82890	Update kernel memory management to current coding conventions.	2014-03-01 14:37:40 +01:00
Jonas 'Sortie' Termansen	98a87fa1e5	Rename Sortix kernel directory to kernel.	2014-03-01 14:37:39 +01:00

Renamed from sortix/x86-family/memorymanagement.cpp (Browse further)