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From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v3 13/18] powerpc/64e: remove mmu_linear_psize
Date: Fri, 22 Oct 2021 08:30:08 +1000	[thread overview]
Message-ID: <20211021223013.2641952-14-npiggin@gmail.com> (raw)
In-Reply-To: <20211021223013.2641952-1-npiggin@gmail.com>

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>
---
 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)
-- 
2.23.0


  parent reply	other threads:[~2021-10-21 22:39 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-21 22:29 [PATCH v3 00/18] powerpc: Make hash MMU code build configurable Nicholas Piggin
2021-10-21 22:29 ` [PATCH v3 01/18] powerpc: Remove unused FW_FEATURE_NATIVE references Nicholas Piggin
2021-10-21 22:29 ` [PATCH v3 02/18] powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-10-21 22:29 ` [PATCH v3 03/18] powerpc/pseries: Stop selecting PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-10-21 22:29 ` [PATCH v3 04/18] powerpc/64s: Move and rename do_bad_slb_fault as it is not hash specific Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 05/18] powerpc/pseries: move pseries_lpar_register_process_table() out from hash specific code Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 06/18] powerpc/pseries: lparcfg don't include slb_size line in radix mode Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 07/18] powerpc/64s: move THP trace point creation out of hash specific file Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 08/18] powerpc/64s: Make flush_and_reload_slb a no-op when radix is enabled Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 09/18] powerpc/64s: move page size definitions from hash specific file Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 10/18] powerpc/64s: Rename hash_hugetlbpage.c to hugetlbpage.c Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 11/18] powerpc/64: pcpu setup avoid reading mmu_linear_psize on 64e or radix Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 12/18] powerpc: make memremap_compat_align 64s-only Nicholas Piggin
2021-10-21 22:30 ` Nicholas Piggin [this message]
2021-10-22  6:49   ` [PATCH v3 13/18] powerpc/64e: remove mmu_linear_psize Christophe Leroy
2021-10-22  9:21     ` Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 14/18] powerpc/64s: Clear MMU_FTR_HPTE_TABLE when booting in radix Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 15/18] powerpc/64s: Make hash MMU support configurable Nicholas Piggin
2021-10-22  7:02   ` Christophe Leroy
2021-10-22  9:30     ` Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 16/18] powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU Nicholas Piggin
2021-10-22  7:18   ` Christophe Leroy
2021-10-22  9:34     ` Nicholas Piggin
2021-10-22  9:39       ` Christophe Leroy
2021-10-22  9:44       ` Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 17/18] powerpc/configs/microwatt: add POWER9_CPU Nicholas Piggin
2021-10-21 22:30 ` [PATCH v3 18/18] powerpc/microwatt: Don't select the hash MMU code Nicholas Piggin
2021-10-22  7:18   ` Christophe Leroy
2021-10-22  9:34     ` Nicholas Piggin

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