Le 22/10/2021 à 00:30, Nicholas Piggin a écrit :
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.
mmu_linear_psize is defined as a macro in:
arch/powerpc/include/asm/book3s/32/mmu-hash.h, line 152 (as a macro)
arch/powerpc/include/asm/nohash/32/mmu-40x.h, line 66 (as a macro)
arch/powerpc/include/asm/nohash/32/mmu-44x.h, line 150 (as a macro)
arch/powerpc/include/asm/nohash/32/mmu-8xx.h, line 173 (as a macro)
Is that needed at all or should is be cleaned, if nothing else than 64s
uses it ?
Otherwise, why not do the same with 64e and define it as a macro ? Maybe
that would help minimising the amount of ifdefs.
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
arch/powerpc/mm/nohash/tlb.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c
index 5872f69141d5..8c1523ae7f7f 100644
--- a/arch/powerpc/mm/nohash/tlb.c
+++ b/arch/powerpc/mm/nohash/tlb.c
@@ -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_* */
@@ -655,14 +654,6 @@ 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)
