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mm: Define VM_HIGH_ARCH_6

The addition of protection keys means that on arm64 we now use all of the
currently defined VM_HIGH_ARCH_x bits. In order to allow us to allocate a
new flag for GCS pages define VM_HIGH_ARCH_6.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-2-222b78d87eee@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

authored by

Mark Brown and committed by
Catalin Marinas 9ab515b1 bcc9d04e

+2
+2
include/linux/mm.h
··· 329 329 #define VM_HIGH_ARCH_BIT_3 35 /* bit only usable on 64-bit architectures */ 330 330 #define VM_HIGH_ARCH_BIT_4 36 /* bit only usable on 64-bit architectures */ 331 331 #define VM_HIGH_ARCH_BIT_5 37 /* bit only usable on 64-bit architectures */ 332 + #define VM_HIGH_ARCH_BIT_6 38 /* bit only usable on 64-bit architectures */ 332 333 #define VM_HIGH_ARCH_0 BIT(VM_HIGH_ARCH_BIT_0) 333 334 #define VM_HIGH_ARCH_1 BIT(VM_HIGH_ARCH_BIT_1) 334 335 #define VM_HIGH_ARCH_2 BIT(VM_HIGH_ARCH_BIT_2) 335 336 #define VM_HIGH_ARCH_3 BIT(VM_HIGH_ARCH_BIT_3) 336 337 #define VM_HIGH_ARCH_4 BIT(VM_HIGH_ARCH_BIT_4) 337 338 #define VM_HIGH_ARCH_5 BIT(VM_HIGH_ARCH_BIT_5) 339 + #define VM_HIGH_ARCH_6 BIT(VM_HIGH_ARCH_BIT_6) 338 340 #endif /* CONFIG_ARCH_USES_HIGH_VMA_FLAGS */ 339 341 340 342 #ifdef CONFIG_ARCH_HAS_PKEYS