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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

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Pull sparc updates from David Miller:

 1) Add a proper .exit.data section.

 2) Fix ipc64_perm type definition, from Arnd Bergmann.

 3) Support folded p4d page tables on sparc64, from Mike Rapport.

 4) Remove uses of struct timex, also from Arnd Bergmann.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  y2038: sparc: remove use of struct timex
  sparc64: add support for folded p4d page tables
  sparc/console: kill off obsolete declarations
  sparc32: fix struct ipc64_perm type definition
  sparc32, leon: Stop adding vendor and device id to prom ambapp path components
  sparc: Add .exit.data section.
  sparc: remove unneeded uapi/asm/statfs.h
This commit is contained in:
Linus Torvalds 2020-01-30 07:36:43 -08:00
commit 9ca4c6429f
12 changed files with 103 additions and 68 deletions
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6
arch/sparc/include/asm/pgalloc_64.h
View File

@ -16,12 +16,12 @@
extern struct kmem_cache *pgtable_cache;
static inline void __pgd_populate(pgd_t *pgd, pud_t *pud)
static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
{
pgd_set(pgd, pud);
p4d_set(p4d, pud);
}
#define pgd_populate(MM, PGD, PUD) __pgd_populate(PGD, PUD)
#define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{

24
arch/sparc/include/asm/pgtable_64.h
View File

@ -13,7 +13,7 @@
* the SpitFire page tables.
*/
#include <asm-generic/5level-fixup.h>
#include <asm-generic/pgtable-nop4d.h>
#include <linux/compiler.h>
#include <linux/const.h>
#include <asm/types.h>
@ -810,9 +810,9 @@ static inline int pmd_present(pmd_t pmd)
#define pud_bad(pud) (pud_val(pud) & ~PAGE_MASK)
#define pgd_none(pgd) (!pgd_val(pgd))
#define p4d_none(p4d) (!p4d_val(p4d))
#define pgd_bad(pgd) (pgd_val(pgd) & ~PAGE_MASK)
#define p4d_bad(p4d) (p4d_val(p4d) & ~PAGE_MASK)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
void set_pmd_at(struct mm_struct *mm, unsigned long addr,
@ -859,13 +859,13 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL)
#define pud_present(pud) (pud_val(pud) != 0U)
#define pud_clear(pudp) (pud_val(*(pudp)) = 0UL)
#define pgd_page_vaddr(pgd) \
((unsigned long) __va(pgd_val(pgd)))
#define pgd_present(pgd) (pgd_val(pgd) != 0U)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL)
#define p4d_page_vaddr(p4d) \
((unsigned long) __va(p4d_val(p4d)))
#define p4d_present(p4d) (p4d_val(p4d) != 0U)
#define p4d_clear(p4dp) (p4d_val(*(p4dp)) = 0UL)
/* only used by the stubbed out hugetlb gup code, should never be called */
#define pgd_page(pgd) NULL
#define p4d_page(p4d) NULL
static inline unsigned long pud_large(pud_t pud)
{
@ -884,8 +884,8 @@ static inline unsigned long pud_pfn(pud_t pud)
/* Same in both SUN4V and SUN4U. */
#define pte_none(pte) (!pte_val(pte))
#define pgd_set(pgdp, pudp) \
(pgd_val(*(pgdp)) = (__pa((unsigned long) (pudp))))
#define p4d_set(p4dp, pudp) \
(p4d_val(*(p4dp)) = (__pa((unsigned long) (pudp))))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
@ -896,8 +896,8 @@ static inline unsigned long pud_pfn(pud_t pud)
/* Find an entry in the third-level page table.. */
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#define pud_offset(pgdp, address) \
((pud_t *) pgd_page_vaddr(*(pgdp)) + pud_index(address))
#define pud_offset(p4dp, address) \
((pud_t *) p4d_page_vaddr(*(p4dp)) + pud_index(address))
/* Find an entry in the second-level page table.. */
#define pmd_offset(pudp, address) \

22
arch/sparc/include/uapi/asm/ipcbuf.h
View File

@ -17,19 +17,19 @@
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid_t uid;
__kernel_gid_t gid;
__kernel_uid_t cuid;
__kernel_gid_t cgid;
__kernel_key_t key;
__kernel_uid32_t uid;
__kernel_gid32_t gid;
__kernel_uid32_t cuid;
__kernel_gid32_t cgid;
#ifndef __arch64__
unsigned short __pad0;
unsigned short __pad0;
#endif
__kernel_mode_t mode;
unsigned short __pad1;
unsigned short seq;
unsigned long long __unused1;
unsigned long long __unused2;
__kernel_mode_t mode;
unsigned short __pad1;
unsigned short seq;
unsigned long long __unused1;
unsigned long long __unused2;
};
#endif /* __SPARC_IPCBUF_H */

7
arch/sparc/include/uapi/asm/statfs.h
View File

@ -1,7 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef ___ASM_SPARC_STATFS_H
#define ___ASM_SPARC_STATFS_H
#include <asm-generic/statfs.h>
#endif

18
arch/sparc/kernel/prom_32.c
View File

@ -132,12 +132,13 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
regs->which_io, regs->phys_addr);
}
/* "name:vendor:device@irq,addrlo" */
/* "name@irq,addrlo" */
static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf)
{
const char *name = of_get_property(dp, "name", NULL);
struct amba_prom_registers *regs;
unsigned int *intr, *device, *vendor, reg0;
unsigned int *intr;
unsigned int reg0;
struct property *prop;
int interrupt = 0;
@ -159,18 +160,7 @@ static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf)
else
intr = prop->value;
prop = of_find_property(dp, "vendor", NULL);
if (!prop)
return;
vendor = prop->value;
prop = of_find_property(dp, "device", NULL);
if (!prop)
return;
device = prop->value;
sprintf(tmp_buf, "%s:%d:%d@%x,%x",
name, *vendor, *device,
*intr, reg0);
sprintf(tmp_buf, "%s@%x,%x", name, *intr, reg0);
}
static void __init __build_path_component(struct device_node *dp, char *tmp_buf)

6
arch/sparc/kernel/signal32.c
View File

@ -299,6 +299,7 @@ static void flush_signal_insns(unsigned long address)
unsigned long pstate, paddr;
pte_t *ptep, pte;
pgd_t *pgdp;
p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
@ -318,7 +319,10 @@ static void flush_signal_insns(unsigned long address)
pgdp = pgd_offset(current->mm, address);
if (pgd_none(*pgdp))
goto out_irqs_on;
pudp = pud_offset(pgdp, address);
p4dp = p4d_offset(pgdp, address);
if (p4d_none(*p4dp))
goto out_irqs_on;
pudp = pud_offset(p4dp, address);
if (pud_none(*pudp))
goto out_irqs_on;
pmdp = pmd_offset(pudp, address);

13
arch/sparc/kernel/smp_64.c
View File

@ -1621,6 +1621,7 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
static void __init pcpu_populate_pte(unsigned long addr)
{
pgd_t *pgd = pgd_offset_k(addr);
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
@ -1633,7 +1634,17 @@ static void __init pcpu_populate_pte(unsigned long addr)
pgd_populate(&init_mm, pgd, new);
}
pud = pud_offset(pgd, addr);
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d)) {
pud_t *new;
new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE);
if (!new)
goto err_alloc;
p4d_populate(&init_mm, p4d, new);
}
pud = pud_offset(p4d, addr);
if (pud_none(*pud)) {
pmd_t *new;

6
arch/sparc/kernel/vmlinux.lds.S
View File

@ -171,12 +171,14 @@ SECTIONS
}
PERCPU_SECTION(SMP_CACHE_BYTES)
#ifdef CONFIG_JUMP_LABEL
. = ALIGN(PAGE_SIZE);
.exit.text : {
EXIT_TEXT
}
#endif
.exit.data : {
EXIT_DATA
}
. = ALIGN(PAGE_SIZE);
__init_end = .;

6
arch/sparc/mm/fault_64.c
View File

@ -80,6 +80,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
static unsigned int get_user_insn(unsigned long tpc)
{
pgd_t *pgdp = pgd_offset(current->mm, tpc);
p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep, pte;
@ -88,7 +89,10 @@ static unsigned int get_user_insn(unsigned long tpc)
if (pgd_none(*pgdp) || unlikely(pgd_bad(*pgdp)))
goto out;
pudp = pud_offset(pgdp, tpc);
p4dp = p4d_offset(pgdp, tpc);
if (p4d_none(*p4dp) || unlikely(p4d_bad(*p4dp)))
goto out;
pudp = pud_offset(p4dp, tpc);
if (pud_none(*pudp) || unlikely(pud_bad(*pudp)))
goto out;

28
arch/sparc/mm/hugetlbpage.c
View File

@ -277,11 +277,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pgd = pgd_offset(mm, addr);
pud = pud_alloc(mm, pgd, addr);
p4d = p4d_offset(pgd, addr);
pud = pud_alloc(mm, p4d, addr);
if (!pud)
return NULL;
if (sz >= PUD_SIZE)
@ -298,13 +300,17 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pgd = pgd_offset(mm, addr);
if (pgd_none(*pgd))
return NULL;
pud = pud_offset(pgd, addr);
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d))
return NULL;
pud = pud_offset(p4d, addr);
if (pud_none(*pud))
return NULL;
if (is_hugetlb_pud(*pud))
@ -449,7 +455,7 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
mm_dec_nr_pmds(tlb->mm);
}
static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
static void hugetlb_free_pud_range(struct mmu_gather *tlb, p4d_t *p4d,
unsigned long addr, unsigned long end,
unsigned long floor, unsigned long ceiling)
{
@ -458,7 +464,7 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
unsigned long start;
start = addr;
pud = pud_offset(pgd, addr);
pud = pud_offset(p4d, addr);
do {
next = pud_addr_end(addr, end);
if (pud_none_or_clear_bad(pud))
@ -481,8 +487,8 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
if (end - 1 > ceiling - 1)
return;
pud = pud_offset(pgd, start);
pgd_clear(pgd);
pud = pud_offset(p4d, start);
p4d_clear(p4d);
pud_free_tlb(tlb, pud, start);
mm_dec_nr_puds(tlb->mm);
}
@ -492,6 +498,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long floor, unsigned long ceiling)
{
pgd_t *pgd;
p4d_t *p4d;
unsigned long next;
addr &= PMD_MASK;
@ -511,10 +518,11 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb,
return;
pgd = pgd_offset(tlb->mm, addr);
p4d = p4d_offset(pgd, addr);
do {
next = pgd_addr_end(addr, end);
if (pgd_none_or_clear_bad(pgd))
next = p4d_addr_end(addr, end);
if (p4d_none_or_clear_bad(p4d))
continue;
hugetlb_free_pud_range(tlb, pgd, addr, next, floor, ceiling);
} while (pgd++, addr = next, addr != end);
hugetlb_free_pud_range(tlb, p4d, addr, next, floor, ceiling);
} while (p4d++, addr = next, addr != end);
}

33
arch/sparc/mm/init_64.c
View File

@ -530,7 +530,8 @@ void __kprobes flush_icache_range(unsigned long start, unsigned long end)
paddr = kaddr & mask;
else {
pgd_t *pgdp = pgd_offset_k(kaddr);
pud_t *pudp = pud_offset(pgdp, kaddr);
p4d_t *p4dp = p4d_offset(pgdp, kaddr);
pud_t *pudp = pud_offset(p4dp, kaddr);
pmd_t *pmdp = pmd_offset(pudp, kaddr);
pte_t *ptep = pte_offset_kernel(pmdp, kaddr);
@ -1653,6 +1654,7 @@ static unsigned long max_phys_bits = 40;
bool kern_addr_valid(unsigned long addr)
{
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@ -1674,7 +1676,11 @@ bool kern_addr_valid(unsigned long addr)
if (pgd_none(*pgd))
return 0;
pud = pud_offset(pgd, addr);
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d))
return 0;
pud = pud_offset(p4d, addr);
if (pud_none(*pud))
return 0;
@ -1800,6 +1806,7 @@ static unsigned long __ref kernel_map_range(unsigned long pstart,
while (vstart < vend) {
unsigned long this_end, paddr = __pa(vstart);
pgd_t *pgd = pgd_offset_k(vstart);
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@ -1814,7 +1821,20 @@ static unsigned long __ref kernel_map_range(unsigned long pstart,
alloc_bytes += PAGE_SIZE;
pgd_populate(&init_mm, pgd, new);
}
pud = pud_offset(pgd, vstart);
p4d = p4d_offset(pgd, vstart);
if (p4d_none(*p4d)) {
pud_t *new;
new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE,
PAGE_SIZE);
if (!new)
goto err_alloc;
alloc_bytes += PAGE_SIZE;
p4d_populate(&init_mm, p4d, new);
}
pud = pud_offset(p4d, vstart);
if (pud_none(*pud)) {
pmd_t *new;
@ -2612,13 +2632,18 @@ int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,
for (; vstart < vend; vstart += PMD_SIZE) {
pgd_t *pgd = vmemmap_pgd_populate(vstart, node);
unsigned long pte;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
if (!pgd)
return -ENOMEM;
pud = vmemmap_pud_populate(pgd, vstart, node);
p4d = vmemmap_p4d_populate(pgd, vstart, node);
if (!p4d)
return -ENOMEM;
pud = vmemmap_pud_populate(p4d, vstart, node);
if (!pud)
return -ENOMEM;

2
include/linux/console.h
View File

@ -101,7 +101,6 @@ extern const struct consw *conswitchp;
extern const struct consw dummy_con; /* dummy console buffer */
extern const struct consw vga_con; /* VGA text console */
extern const struct consw newport_con; /* SGI Newport console */
extern const struct consw prom_con; /* SPARC PROM console */
int con_is_bound(const struct consw *csw);
int do_unregister_con_driver(const struct consw *csw);
@ -201,7 +200,6 @@ extern void suspend_console(void);
extern void resume_console(void);
int mda_console_init(void);
void prom_con_init(void);
void vcs_make_sysfs(int index);
void vcs_remove_sysfs(int index);