| Message ID | 1627281445-12445-4-git-send-email-anshuman.khandual@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) | expand |
On Mon, Jul 26, 2021 at 12:07:18PM +0530, Anshuman Khandual wrote: > As per ARM ARM (0487G.A) TCR_EL1.DS fields controls whether 52 bit input > and output address get supported on 4K and 16K page size configuration, > when FEAT_LPA2 is known to have been implemented. This adds TCR_DS field > definition which would be used when FEAT_LPA2 gets enabled. > > Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 66671ff..1eb5574 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -275,6 +275,7 @@ #define TCR_E0PD1 (UL(1) << 56) #define TCR_TCMA0 (UL(1) << 57) #define TCR_TCMA1 (UL(1) << 58) +#define TCR_DS (UL(1) << 59) /* * TTBR.
As per ARM ARM (0487G.A) TCR_EL1.DS fields controls whether 52 bit input and output address get supported on 4K and 16K page size configuration, when FEAT_LPA2 is known to have been implemented. This adds TCR_DS field definition which would be used when FEAT_LPA2 gets enabled. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- arch/arm64/include/asm/pgtable-hwdef.h | 1 + 1 file changed, 1 insertion(+)