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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

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Pull s390 updates from Martin Schwidefsky:
 "An optimization for irq-restore, the SSM instruction is quite a bit
  slower than an if-statement and a STOSM.

  The copy_file_range system all is added.

  Cleanup for PCI and CIO.

  And a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: update measurement characteristics
  s390/cio: ensure consistent measurement state
  s390/cio: fix measurement characteristics memleak
  s390/zcrypt: Fix cryptographic device id in kernel messages
  s390/pci: remove iomap sanity checks
  s390/pci: set error state for unusable functions
  s390/pci: fix bar check
  s390/pci: resize iomap
  s390/pci: improve ZPCI_* macros
  s390/pci: provide ZPCI_ADDR macro
  s390/pci: adjust IOMAP_MAX_ENTRIES
  s390/numa: move numa_init_late() from device to arch_initcall
  s390: remove all usages of PSW_ADDR_INSN
  s390: remove all usages of PSW_ADDR_AMODE
  s390: wire up copy_file_range syscall
  s390: remove superfluous memblock_alloc() return value checks
  s390/numa: allocate memory with correct alignment
  s390/irqflags: optimize irq restore
  s390/mm: use TASK_MAX_SIZE where applicable
This commit is contained in:
Linus Torvalds
2016-01-29 16:05:18 -08:00
parent d3f71ae711 9f3d6d7a40
commit 6b292a8abd
37 changed files with 192 additions and 189 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/s390/include/asm/irqflags.h
View File

@@ -8,6 +8,8 @@
#include <linux/types.h>
#define ARCH_IRQ_ENABLED (3UL << (BITS_PER_LONG - 8))
/* store then OR system mask. */
#define __arch_local_irq_stosm(__or) \
({ \
@@ -54,14 +56,17 @@ static inline notrace void arch_local_irq_enable(void)
__arch_local_irq_stosm(0x03);
}
/* This only restores external and I/O interrupt state */
static inline notrace void arch_local_irq_restore(unsigned long flags)
{
__arch_local_irq_ssm(flags);
/* only disabled->disabled and disabled->enabled is valid */
if (flags & ARCH_IRQ_ENABLED)
arch_local_irq_enable();
}
static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (3UL << (BITS_PER_LONG - 8)));
return !(flags & ARCH_IRQ_ENABLED);
}
static inline notrace bool arch_irqs_disabled(void)

14
arch/s390/include/asm/pci_io.h
View File

@@ -8,10 +8,13 @@
#include <asm/pci_insn.h>
/* I/O Map */
#define ZPCI_IOMAP_MAX_ENTRIES 0x7fff
#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000ULL
#define ZPCI_IOMAP_ADDR_IDX_MASK 0x7fff000000000000ULL
#define ZPCI_IOMAP_ADDR_OFF_MASK 0x0000ffffffffffffULL
#define ZPCI_IOMAP_SHIFT 48
#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000UL
#define ZPCI_IOMAP_ADDR_OFF_MASK ((1UL << ZPCI_IOMAP_SHIFT) - 1)
#define ZPCI_IOMAP_MAX_ENTRIES \
((ULONG_MAX - ZPCI_IOMAP_ADDR_BASE + 1) / (1UL << ZPCI_IOMAP_SHIFT))
#define ZPCI_IOMAP_ADDR_IDX_MASK \
(~ZPCI_IOMAP_ADDR_OFF_MASK - ZPCI_IOMAP_ADDR_BASE)
struct zpci_iomap_entry {
u32 fh;
@@ -21,8 +24,9 @@ struct zpci_iomap_entry {
extern struct zpci_iomap_entry *zpci_iomap_start;
#define ZPCI_ADDR(idx) (ZPCI_IOMAP_ADDR_BASE | ((u64) idx << ZPCI_IOMAP_SHIFT))
#define ZPCI_IDX(addr) \
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> 48)
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> ZPCI_IOMAP_SHIFT)
#define ZPCI_OFFSET(addr) \
((__force u64) addr & ZPCI_IOMAP_ADDR_OFF_MASK)

4
arch/s390/include/asm/processor.h
View File

@@ -166,14 +166,14 @@ extern __vector128 init_task_fpu_regs[__NUM_VXRS];
*/
#define start_thread(regs, new_psw, new_stackp) do { \
regs->psw.mask = PSW_USER_BITS | PSW_MASK_EA | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->psw.addr = new_psw; \
regs->gprs[15] = new_stackp; \
execve_tail(); \
} while (0)
#define start_thread31(regs, new_psw, new_stackp) do { \
regs->psw.mask = PSW_USER_BITS | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->psw.addr = new_psw; \
regs->gprs[15] = new_stackp; \
crst_table_downgrade(current->mm, 1UL << 31); \
execve_tail(); \

6
arch/s390/include/asm/ptrace.h
View File

@@ -149,7 +149,7 @@ static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
#define arch_has_block_step() (1)
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
#define instruction_pointer(regs) ((regs)->psw.addr)
#define user_stack_pointer(regs)((regs)->gprs[15])
#define profile_pc(regs) instruction_pointer(regs)
@@ -161,7 +161,7 @@ static inline long regs_return_value(struct pt_regs *regs)
static inline void instruction_pointer_set(struct pt_regs *regs,
unsigned long val)
{
regs->psw.addr = val | PSW_ADDR_AMODE;
regs->psw.addr = val;
}
int regs_query_register_offset(const char *name);
@@ -171,7 +171,7 @@ unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
{
return regs->gprs[15] & PSW_ADDR_INSN;
return regs->gprs[15];
}
#endif /* __ASSEMBLY__ */