linux-toradex.git/arch/arm/include/asm/pgtable-2level-hwdef.h, branch v4.8-rc2 Linux kernel for Apalis and Colibri modules ARM: domains: keep vectors in separate domain 2015-08-21T12:55:53+00:00 Russell King rmk+kernel@arm.linux.org.uk 2015-08-21T08:38:31+00:00 a02d8dfd54cdf3b1b0464ccc2c1c4afe2c003a35 Keep the machine vectors in its own domain to avoid software based user access control from making the vector code inaccessible, and thereby deadlocking the machine. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Keep the machine vectors in its own domain to avoid software based
user access control from making the vector code inaccessible, and
thereby deadlocking the machine.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 8235/1: Support for the PXN CPU feature on ARMv7 2014-12-03T15:57:45+00:00 Jungseung Lee js07.lee@gmail.com 2014-11-29T01:33:30+00:00 1d4d37159d013a4c54d785407dd8902f901d7bc5 Modern ARMv7-A/R cores optionally implement below new hardware feature: - PXN: Privileged execute-never(PXN) is a security feature. PXN bit determines whether the processor can execute software from the region. This is effective solution against ret2usr attack. On an implementation that does not include the LPAE, PXN is optionally supported. This patch set PXN bit on user page table for preventing user code execution with privilege mode. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jungseung Lee <js07.lee@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Modern ARMv7-A/R cores optionally implement below new
hardware feature:

- PXN:
Privileged execute-never(PXN) is a security feature. PXN bit
determines whether the processor can execute software from
the region. This is effective solution against ret2usr attack.
On an implementation that does not include the LPAE, PXN is
optionally supported.

This patch set PXN bit on user page table for preventing
user code execution with privilege mode.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jungseung Lee <js07.lee@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 7077/1: LPAE: Use a mask for physical addresses in page table entries 2011-10-06T14:40:06+00:00 Catalin Marinas catalin.marinas@arm.com 2011-09-05T16:52:36+00:00 d7c5d0dcffb3b5702d9477faceff4b8398e6fed0 With LPAE, the physical address mask is 40-bit while the page table entry is 64-bit. This patch introduces PHYS_MASK for the 2-level page table format, defined as ~0UL. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
With LPAE, the physical address mask is 40-bit while the page table
entry is 64-bit. This patch introduces PHYS_MASK for the 2-level page
table format, defined as ~0UL.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 7076/1: LPAE: Add (pte|pmd)val_t type definitions as u32 2011-10-06T14:40:05+00:00 Catalin Marinas catalin.marinas@arm.com 2011-09-05T16:51:56+00:00 442e70c0b3536e832547eed89629435462f4b515 This patch defines the (pte|pmd)val_t as u32 and changes the page table types to be based on these. The PMD bits are converted to the corresponding type using the _AT macro. The flush_pmd_entry/clean_pmd_entry argument was changed to (void *) to allow them to be used with both PGD and PMD pointers and avoid code duplication. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
This patch defines the (pte|pmd)val_t as u32 and changes the page table
types to be based on these. The PMD bits are converted to the
corresponding type using the _AT macro.

The flush_pmd_entry/clean_pmd_entry argument was changed to (void *) to
allow them to be used with both PGD and PMD pointers and avoid code
duplication.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 7075/1: LPAE: Factor out 2-level page table definitions into separate files 2011-10-06T14:40:05+00:00 Catalin Marinas catalin.marinas@arm.com 2011-09-05T16:41:02+00:00 17f57211969bddca2e922299a2530b1c65ccabfa This patch moves page table definitions from asm/page.h, asm/pgtable.h and asm/ptgable-hwdef.h into corresponding *-2level* files. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
This patch moves page table definitions from asm/page.h, asm/pgtable.h
and asm/ptgable-hwdef.h into corresponding *-2level* files.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>