Commit b161f924 authored by Marc Zyngier's avatar Marc Zyngier Committed by Will Deacon
Browse files

arm64: Fix outdated TCR setup comment 



The arm64 kernel has long be able to use more than 39bit VAs.
Since day one, actually. Let's rewrite the offending comment.

Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Acked-by: default avatarDavid Brazdil <dbrazdil@google.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-3-maz@kernel.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 114945d8

arch/arm64/mm/proc.S

+2 −2
Original line number Diff line number Diff line
@@ -464,8 +464,8 @@ SYM_FUNC_START(__cpu_setup) 
#endif

	msr	mair_el1, x5

	/*

	 * Set/prepare TCR and TTBR. We use 512GB (39-bit) address range for

	 * both user and kernel.

	 * Set/prepare TCR and TTBR. TCR_EL1.T1SZ gets further

	 * adjusted if the kernel is compiled with 52bit VA support.

	 */

	mov_q	x10, TCR_TxSZ(VA_BITS) | TCR_CACHE_FLAGS | TCR_SMP_FLAGS | \

			TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \