| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2023-06-09 | lib: devmem_is_allowed: include linux/io.h | Arnd Bergmann | 1 | -0/+1 | |
| The devmem_is_allowed() function is defined in a file of the same name, but the declaration is in asm/io.h, which is not included there, causing a W=1 warning: lib/devmem_is_allowed.c:20:5: error: no previous prototype for 'devmem_is_allowed' [-Werror=missing-prototypes] Include the appropriate header to avoid the warning. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Arnd Bergmann <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Dennis Zhou <[email protected]> Cc: Eric Paris <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Helge Deller <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Simek <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Paul Moore <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Russell King <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Waiman Long <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> | |||||
| 2021-08-13 | lib: use PFN_PHYS() in devmem_is_allowed() | Liang Wang | 1 | -1/+1 | |
| The physical address may exceed 32 bits on 32-bit systems with more than 32 bits of physcial address. Use PFN_PHYS() in devmem_is_allowed(), or the physical address may overflow and be truncated. We found this bug when mapping a high addresses through devmem tool, when CONFIG_STRICT_DEVMEM is enabled on the ARM with ARM_LPAE and devmem is used to map a high address that is not in the iomem address range, an unexpected error indicating no permission is returned. This bug was initially introduced from v2.6.37, and the function was moved to lib in v5.11. Link: https://lkml.kernel.org/r/[email protected] Fixes: 087aaffcdf9c ("ARM: implement CONFIG_STRICT_DEVMEM by disabling access to RAM via /dev/mem") Fixes: 527701eda5f1 ("lib: Add a generic version of devmem_is_allowed()") Signed-off-by: Liang Wang <[email protected]> Reviewed-by: Luis Chamberlain <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Russell King <[email protected]> Cc: Liang Wang <[email protected]> Cc: Xiaoming Ni <[email protected]> Cc: Kefeng Wang <[email protected]> Cc: <[email protected]> [2.6.37+] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2020-12-11 | lib: Add a generic version of devmem_is_allowed() | Palmer Dabbelt | 1 | -0/+27 | |
| As part of adding support for STRICT_DEVMEM to the RISC-V port, Zong provided a devmem_is_allowed() implementation that's exactly the same as all the others I checked. Instead I'm adding a generic version, which will soon be used. Reviewed-by: Luis Chamberlain <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]> | |||||