Simplify powernv memory_block_size call back by directly using 1G value
instead of using radix_mem_block_size. Also, remove the variable and use
memory_block_size_bytes() in the kernel mapping function. This gets called
in radix__early_init_mmu() which is called after probe_machine is called
and correct machine-specific callback is assigned.
No functional change in this patch.
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu.h | 5 --
arch/powerpc/mm/book3s64/radix_pgtable.c | 64 +-----------------------
arch/powerpc/platforms/powernv/setup.c | 4 +-
3 files changed, 3 insertions(+), 70 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h
b/arch/powerpc/include/asm/book3s/64/mmu.h
index 570a4960cf17..7b7643f32e0e 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -71,11 +71,6 @@ extern unsigned int mmu_pid_bits;
/* Base PID to allocate from */
extern unsigned int mmu_base_pid;
-/*
- * memory block size used with radix translation.
- */
-extern unsigned long __ro_after_init radix_mem_block_size;
-
#define PRTB_SIZE_SHIFT (mmu_pid_bits + 4)
#define PRTB_ENTRIES (1ul << mmu_pid_bits)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 2297aa764ecd..905cfa0af1ae 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -37,7 +37,6 @@
#include <mm/mmu_decl.h>
unsigned int mmu_base_pid;
-unsigned long radix_mem_block_size __ro_after_init;
static __ref void *early_alloc_pgtable(unsigned long size, int nid,
unsigned long region_start, unsigned long region_end)
@@ -300,7 +299,7 @@ static int __meminit create_physical_mapping(unsigned long
start,
bool prev_exec, exec = false;
pgprot_t prot;
int psize;
- unsigned long max_mapping_size = radix_mem_block_size;
+ unsigned long max_mapping_size = memory_block_size_bytes();
if (debug_pagealloc_enabled_or_kfence())
max_mapping_size = PAGE_SIZE;
@@ -502,58 +501,6 @@ static int __init radix_dt_scan_page_sizes(unsigned long
node,
return 1;
}
-#ifdef CONFIG_MEMORY_HOTPLUG
-static int __init probe_memory_block_size(unsigned long node, const char
*uname, int
- depth, void *data)
-{
- unsigned long *mem_block_size = (unsigned long *)data;
- const __be32 *prop;
- int len;
-
- if (depth != 1)
- return 0;
-
- if (strcmp(uname, "ibm,dynamic-reconfiguration-memory"))
- return 0;
-
- prop = of_get_flat_dt_prop(node, "ibm,lmb-size", &len);
-
- if (!prop || len < dt_root_size_cells * sizeof(__be32))
- /*
- * Nothing in the device tree
- */
- *mem_block_size = MIN_MEMORY_BLOCK_SIZE;
- else
- *mem_block_size = of_read_number(prop, dt_root_size_cells);
- return 1;
-}
-
-static unsigned long __init radix_memory_block_size(void)
-{
- unsigned long mem_block_size = MIN_MEMORY_BLOCK_SIZE;
-
- /*
- * OPAL firmware feature is set by now. Hence we are ok
- * to test OPAL feature.
- */
- if (firmware_has_feature(FW_FEATURE_OPAL))
- mem_block_size = 1UL * 1024 * 1024 * 1024;
- else
- of_scan_flat_dt(probe_memory_block_size, &mem_block_size);
-
- return mem_block_size;
-}
-
-#else /* CONFIG_MEMORY_HOTPLUG */
-
-static unsigned long __init radix_memory_block_size(void)
-{
- return 1UL * 1024 * 1024 * 1024;
-}
-
-#endif /* CONFIG_MEMORY_HOTPLUG */
-
-
void __init radix__early_init_devtree(void)
{
int rc;
@@ -578,15 +525,6 @@ void __init radix__early_init_devtree(void)
psize_to_rpti_pgsize(MMU_PAGE_64K);
}
- /*
- * Max mapping size used when mapping pages. We don't use
- * ppc_md.memory_block_size() here because this get called
- * early and we don't have machine probe called yet. Also
- * the pseries implementation only check for ibm,lmb-size.
- * All hypervisor supporting radix do expose that device
- * tree node.
- */
- radix_mem_block_size = radix_memory_block_size();
return;
}
diff --git a/arch/powerpc/platforms/powernv/setup.c
b/arch/powerpc/platforms/powernv/setup.c
index 5e9c6b55809f..29f855c66ad3 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -488,9 +488,9 @@ static unsigned long pnv_memory_block_size(void)
* this size.
*/
if (radix_enabled())
- return radix_mem_block_size;
+ return 1UL << 30;
else
- return 256UL * 1024 * 1024;
+ return 256UL << 20;
}
#endif
--
2.40.1
