The patch titled
Subject: powerpc/64e: drop E500 ifdefs in 64-bit code
has been added to the -mm mm-unstable branch. Its filename is
powerpc-64e-drop-e500-ifdefs-in-64-bit-code.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/powerpc-64e-drop-e500-ifdefs-in-64-bit-code.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Subject: powerpc/64e: drop E500 ifdefs in 64-bit code
Date: Tue, 2 Jul 2024 15:51:15 +0200
All 64-bit Book3E have E500=y, so drop the unneeded ifdefs.
Link: https://lkml.kernel.org/r/7fb88809c88a1b774063eda602a9333079403f83.1719928057.git.christophe.leroy@xxxxxxxxxx
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/nohash/tlb_64e.c | 12 ------------
1 file changed, 12 deletions(-)
--- a/arch/powerpc/mm/nohash/tlb_64e.c~powerpc-64e-drop-e500-ifdefs-in-64-bit-code
+++ a/arch/powerpc/mm/nohash/tlb_64e.c
@@ -85,7 +85,6 @@ static void __init setup_page_sizes(void
unsigned int eptcfg;
int psize;
-#ifdef CONFIG_PPC_E500
unsigned int mmucfg = mfspr(SPRN_MMUCFG);
int fsl_mmu = mmu_has_feature(MMU_FTR_TYPE_FSL_E);
@@ -151,7 +150,6 @@ static void __init setup_page_sizes(void
goto out;
}
-#endif
out:
/* Cleanup array and print summary */
pr_info("MMU: Supported page sizes\n");
@@ -180,13 +178,11 @@ static void __init setup_mmu_htw(void)
*/
switch (book3e_htw_mode) {
-#ifdef CONFIG_PPC_E500
case PPC_HTW_E6500:
extlb_level_exc = EX_TLB_SIZE;
patch_exception(0x1c0, exc_data_tlb_miss_e6500_book3e);
patch_exception(0x1e0, exc_instruction_tlb_miss_e6500_book3e);
break;
-#endif
}
pr_info("MMU: Book3E HW tablewalk %s\n",
book3e_htw_mode != PPC_HTW_NONE ? "enabled" : "not supported");
@@ -217,7 +213,6 @@ static void early_init_this_mmu(void)
}
mtspr(SPRN_MAS4, mas4);
-#ifdef CONFIG_PPC_E500
if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
unsigned int num_cams;
bool map = true;
@@ -238,7 +233,6 @@ static void early_init_this_mmu(void)
linear_map_top = map_mem_in_cams(linear_map_top,
num_cams, false, true);
}
-#endif
/* A sync won't hurt us after mucking around with
* the MMU configuration
@@ -270,7 +264,6 @@ static void __init early_init_mmu_global
/* Look for HW tablewalk support */
setup_mmu_htw();
-#ifdef CONFIG_PPC_E500
if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
if (book3e_htw_mode == PPC_HTW_NONE) {
extlb_level_exc = EX_TLB_SIZE;
@@ -279,7 +272,6 @@ static void __init early_init_mmu_global
exc_instruction_tlb_miss_bolted_book3e);
}
}
-#endif
/* Set the global containing the top of the linear mapping
* for use by the TLB miss code
@@ -291,7 +283,6 @@ static void __init early_init_mmu_global
static void __init early_mmu_set_memory_limit(void)
{
-#ifdef CONFIG_PPC_E500
if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
/*
* Limit memory so we dont have linear faults.
@@ -302,7 +293,6 @@ static void __init early_mmu_set_memory_
*/
memblock_enforce_memory_limit(linear_map_top);
}
-#endif
memblock_set_current_limit(linear_map_top);
}
@@ -340,7 +330,6 @@ void setup_initial_memory_limit(phys_add
* We crop it to the size of the first MEMBLOCK to
* avoid going over total available memory just in case...
*/
-#ifdef CONFIG_PPC_E500
if (early_mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
unsigned long linear_sz;
unsigned int num_cams;
@@ -353,7 +342,6 @@ void setup_initial_memory_limit(phys_add
ppc64_rma_size = min_t(u64, linear_sz, 0x40000000);
} else
-#endif
ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
/* Finally limit subsequent allocations */
_
Patches currently in -mm which might be from mpe@xxxxxxxxxxxxxx are
powerpc-64e-remove-unused-ibm-htw-code.patch
powerpc-64e-split-out-nohash-book3e-64-bit-code.patch
powerpc-64e-drop-e500-ifdefs-in-64-bit-code.patch
powerpc-64e-drop-mmu_ftr_type_fsl_e-checks-in-64-bit-code.patch
powerpc-64e-consolidate-tlb-miss-handler-patching.patch
powerpc-64e-drop-unused-tlb-miss-handlers.patch
