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powerpc/64e: remove mmu_linear_psize

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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: Nicholas Piggin <npiggin@gmail.com>
[mpe: Retain the extern, so we can use IS_ENABLED() for related code]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211201144153.2456614-14-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2021-12-02 00:41:48 +10:00 committed by Michael Ellerman
parent 20626177c9
commit 8dbfc0092b
1 changed files with 0 additions and 9 deletions
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9
arch/powerpc/mm/nohash/tlb.c
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@ -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)