Commit 8dbfc009 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc/64e: remove mmu_linear_psize 



mmu_linear_psize is only set at boot once on 64e, is not necessarily
the correct size of the linear map pages, and is never used anywhere.
Remove it.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
[mpe: Retain the extern, so we can use IS_ENABLED() for related code]
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211201144153.2456614-14-npiggin@gmail.com
parent 20626177

arch/powerpc/mm/nohash/tlb.c

+0 −9
Original line number Diff line number Diff line
@@ -150,7 +150,6 @@ static inline int mmu_get_tsize(int psize) 
 */

#ifdef CONFIG_PPC64



int mmu_linear_psize;		/* Page size used for the linear mapping */

int mmu_pte_psize;		/* Page size used for PTE pages */

int mmu_vmemmap_psize;		/* Page size used for the virtual mem map */

int book3e_htw_mode;		/* HW tablewalk?  Value is PPC_HTW_* */
@@ -657,14 +656,6 @@ static void early_init_this_mmu(void) 


static void __init early_init_mmu_global(void)

{

	/* XXX This will have to be decided at runtime, but right

	 * now our boot and TLB miss code hard wires it. Ideally

	 * we should find out a suitable page size and patch the

	 * TLB miss code (either that or use the PACA to store

	 * the value we want)

	 */

	mmu_linear_psize = MMU_PAGE_1G;



	/* XXX This should be decided at runtime based on supported

	 * page sizes in the TLB, but for now let's assume 16M is

	 * always there and a good fit (which it probably is)