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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-18 10:57:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-18 10:57:27 -0800 |
| commit | 5ba836eb9fdb07843cfa004e511f333745adb76e (patch) | |
| tree | cc20246cd657225c494bfdd8d3e24f6b7887ff71 /arch/arm64/mm | |
| parent | e2ae634014d3a8839a99f8897b3f6346a133a33b (diff) | |
| parent | 9fd339a45be5c06e239d45a042eab9d25de87882 (diff) | |
| download | lwn-5ba836eb9fdb07843cfa004e511f333745adb76e.tar.gz lwn-5ba836eb9fdb07843cfa004e511f333745adb76e.zip | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull more arm64 updates from Catalin Marinas:
"These are some some trivial updates that mostly fix/clean-up code
pushed during the merging window:
- Work around broken GCC 4.9 handling of "S" asm constraint
- Suppress W=1 missing prototype warnings
- Warn the user when a small VA_BITS value cannot map the available
memory
- Drop the useless update to per-cpu cycles"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Work around broken GCC 4.9 handling of "S" constraint
arm64: Warn the user when a small VA_BITS value wastes memory
arm64: entry: suppress W=1 prototype warnings
arm64: topology: Drop the useless update to per-cpu cycles
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 69d4251ee079..75addb36354a 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -295,6 +295,9 @@ void __init arm64_memblock_init(void) memstart_addr = round_down(memblock_start_of_DRAM(), ARM64_MEMSTART_ALIGN); + if ((memblock_end_of_DRAM() - memstart_addr) > linear_region_size) + pr_warn("Memory doesn't fit in the linear mapping, VA_BITS too small\n"); + /* * Remove the memory that we will not be able to cover with the * linear mapping. Take care not to clip the kernel which may be |