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powerpc/mm: print hash info in a helper 

Reduce #ifdef mess by defining a helper to print
hash info at startup.

In the meantime, remove the display of hash table address
to reduce leak of non necessary information.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-04-26 16:36:39 +00:00 committed by Michael Ellerman
parent 8f156c23f4
commit e4dccf9092
4 changed files with 26 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
arch/powerpc/kernel/setup-common.c
View File

@ -800,12 +800,6 @@ void arch_setup_pdev_archdata(struct platform_device *pdev)
static __init void print_system_info(void)
{
pr_info("-----------------------------------------------------\n");
#ifdef CONFIG_PPC_BOOK3S_64
pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
#endif
#ifdef CONFIG_PPC_BOOK3S_32
pr_info("Hash_size = 0x%lx\n", Hash_size);
#endif
pr_info("phys_mem_size = 0x%llx\n",
(unsigned long long)memblock_phys_mem_size());
@ -827,21 +821,7 @@ static __init void print_system_info(void)
pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features);
#endif
#ifdef CONFIG_PPC_BOOK3S_64
if (htab_address)
pr_info("htab_address = 0x%p\n", htab_address);
if (htab_hash_mask)
pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
pr_info("kernel vmalloc start = 0x%lx\n", KERN_VIRT_START);
pr_info("kernel IO start = 0x%lx\n", KERN_IO_START);
pr_info("kernel vmemmap start = 0x%lx\n", (unsigned long)vmemmap);
#endif
#ifdef CONFIG_PPC_BOOK3S_32
if (Hash)
pr_info("Hash = 0x%p\n", Hash);
if (Hash_mask)
pr_info("Hash_mask = 0x%lx\n", Hash_mask);
#endif
print_system_hash_info();
if (PHYSICAL_START > 0)
pr_info("physical_start = 0x%llx\n",

9
arch/powerpc/mm/book3s32/mmu.c
View File

@ -37,7 +37,7 @@
#include <mm/mmu_decl.h>
struct hash_pte *Hash;
unsigned long Hash_size, Hash_mask;
static unsigned long Hash_size, Hash_mask;
unsigned long _SDR1;
static unsigned int hash_mb, hash_mb2;
@ -401,6 +401,13 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x10000000));
}
void __init print_system_hash_info(void)
{
pr_info("Hash_size = 0x%lx\n", Hash_size);
if (Hash_mask)
pr_info("Hash_mask = 0x%lx\n", Hash_mask);
}
#ifdef CONFIG_PPC_KUEP
void __init setup_kuep(bool disabled)
{

13
arch/powerpc/mm/book3s64/hash_utils.c
View File

@ -66,6 +66,8 @@
#include <asm/pte-walk.h>
#include <asm/asm-prototypes.h>
#include <mm/mmu_decl.h>
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
@ -1945,3 +1947,14 @@ static int __init hash64_debugfs(void)
}
machine_device_initcall(pseries, hash64_debugfs);
#endif /* CONFIG_DEBUG_FS */
void __init print_system_hash_info(void)
{
pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
if (htab_hash_mask)
pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
pr_info("kernel vmalloc start = 0x%lx\n", KERN_VIRT_START);
pr_info("kernel IO start = 0x%lx\n", KERN_IO_START);
pr_info("kernel vmemmap start = 0x%lx\n", (unsigned long)vmemmap);
}

5
arch/powerpc/mm/mmu_decl.h
View File

@ -83,6 +83,8 @@ static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
}
#endif
static inline void print_system_hash_info(void) {}
#else /* CONFIG_PPC_MMU_NOHASH */
extern void hash_preload(struct mm_struct *mm, unsigned long ea,
@ -92,6 +94,8 @@ extern void hash_preload(struct mm_struct *mm, unsigned long ea,
extern void _tlbie(unsigned long address);
extern void _tlbia(void);
void print_system_hash_info(void);
#endif /* CONFIG_PPC_MMU_NOHASH */
#ifdef CONFIG_PPC32
@ -105,7 +109,6 @@ extern unsigned int rtas_data, rtas_size;
struct hash_pte;
extern struct hash_pte *Hash;
extern unsigned long Hash_size, Hash_mask;
extern u8 early_hash[];
#endif /* CONFIG_PPC32 */