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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-02-17 09:22:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-02-17 09:22:01 -0800 |
| commit | 2fee036af043fa07ab19cbe8a7350fc685bd8be1 (patch) | |
| tree | 2bedee3e95f4c3e7c099655a4f0c2cec97bd453b /arch/arm64/include | |
| parent | 8d33316d520501f24fef180ea5b860ecb9e64506 (diff) | |
| parent | 582a32e708823e5957fd73ccd78dc4a9e49d21ea (diff) | |
Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
"This tree reverts a GICv3 commit (which was broken) and fixes it in
another way, by adding a memblock build-time entries quirk for ARM64"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm: Revert "Defer persistent reservations until after paging_init()"
arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index e1ec947e7c0c..0c656850eeea 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -332,6 +332,17 @@ static inline void *phys_to_virt(phys_addr_t x) #define virt_addr_valid(kaddr) \ (_virt_addr_is_linear(kaddr) && _virt_addr_valid(kaddr)) +/* + * Given that the GIC architecture permits ITS implementations that can only be + * configured with a LPI table address once, GICv3 systems with many CPUs may + * end up reserving a lot of different regions after a kexec for their LPI + * tables (one per CPU), as we are forced to reuse the same memory after kexec + * (and thus reserve it persistently with EFI beforehand) + */ +#if defined(CONFIG_EFI) && defined(CONFIG_ARM_GIC_V3_ITS) +# define INIT_MEMBLOCK_RESERVED_REGIONS (INIT_MEMBLOCK_REGIONS + NR_CPUS + 1) +#endif + #include <asm-generic/memory_model.h> #endif |