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arm64 fixes for -rc4

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- Fix boot crash on platforms with SVE2 due to missing register encoding
 
 - Fix architected timer accessors when CONFIG_OPTIMIZE_INLINING=y
 
 - Move cpu_logical_map into smp.h for use by upcoming irqchip drivers
 
 - Trivial typo fix in comment
 
 - Disable some useless, noisy warnings from GCC 9
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Another round of mostly-benign fixes, the exception being a boot crash
  on SVE2-capable CPUs (although I don't know where you'd find such a
  thing, so maybe it's benign too).

  We're in the process of resolving some big-endian ptrace breakage, so
  I'll probably have some more for you next week.

  Summary:

   - Fix boot crash on platforms with SVE2 due to missing register
     encoding

   - Fix architected timer accessors when CONFIG_OPTIMIZE_INLINING=y

   - Move cpu_logical_map into smp.h for use by upcoming irqchip drivers

   - Trivial typo fix in comment

   - Disable some useless, noisy warnings from GCC 9"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Silence gcc warnings about arch ABI drift
  ARM64: trivial: s/TIF_SECOMP/TIF_SECCOMP/ comment typo fix
  arm64: arch_timer: mark functions as __always_inline
  arm64: smp: Moved cpu_logical_map[] to smp.h
  arm64: cpufeature: Fix missing ZFR0 in __read_sysreg_by_encoding()
This commit is contained in:
Linus Torvalds 2019-06-07 09:21:48 -07:00
commit a02a532c2a
6 changed files with 13 additions and 10 deletions
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1
arch/arm64/Makefile
View File

@ -51,6 +51,7 @@ endif
KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) $(brokengasinst)
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += -Wno-psabi
KBUILD_AFLAGS += $(lseinstr) $(brokengasinst)
KBUILD_CFLAGS += $(call cc-option,-mabi=lp64)

8
arch/arm64/include/asm/arch_timer.h
View File

@ -193,7 +193,7 @@ static inline void arch_timer_set_cntkctl(u32 cntkctl)
: "=r" (tmp) : "r" (_val)); \
} while (0)
static inline u64 __arch_counter_get_cntpct_stable(void)
static __always_inline u64 __arch_counter_get_cntpct_stable(void)
{
u64 cnt;
@ -203,7 +203,7 @@ static inline u64 __arch_counter_get_cntpct_stable(void)
return cnt;
}
static inline u64 __arch_counter_get_cntpct(void)
static __always_inline u64 __arch_counter_get_cntpct(void)
{
u64 cnt;
@ -213,7 +213,7 @@ static inline u64 __arch_counter_get_cntpct(void)
return cnt;
}
static inline u64 __arch_counter_get_cntvct_stable(void)
static __always_inline u64 __arch_counter_get_cntvct_stable(void)
{
u64 cnt;
@ -223,7 +223,7 @@ static inline u64 __arch_counter_get_cntvct_stable(void)
return cnt;
}
static inline u64 __arch_counter_get_cntvct(void)
static __always_inline u64 __arch_counter_get_cntvct(void)
{
u64 cnt;

6
arch/arm64/include/asm/smp.h
View File

@ -53,6 +53,12 @@ DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
*/
#define raw_smp_processor_id() (*raw_cpu_ptr(&cpu_number))
/*
* Logical CPU mapping.
*/
extern u64 __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
struct seq_file;
/*

5
arch/arm64/include/asm/smp_plat.h
View File

@ -36,11 +36,6 @@ static inline u32 mpidr_hash_size(void)
return 1 << mpidr_hash.bits;
}
/*
* Logical CPU mapping.
*/
extern u64 __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
/*
* Retrieve logical cpu index corresponding to a given MPIDR.Aff*
* - mpidr: MPIDR.Aff* bits to be used for the look-up

2
arch/arm64/include/asm/thread_info.h
View File

@ -75,7 +75,7 @@ void arch_release_task_struct(struct task_struct *tsk);
* TIF_SYSCALL_TRACE - syscall trace active
* TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace
* TIF_SYSCALL_AUDIT - syscall auditing
* TIF_SECOMP - syscall secure computing
* TIF_SECCOMP - syscall secure computing
* TIF_SIGPENDING - signal pending
* TIF_NEED_RESCHED - rescheduling necessary
* TIF_NOTIFY_RESUME - callback before returning to user

1
arch/arm64/kernel/cpufeature.c
View File

@ -830,6 +830,7 @@ static u64 __read_sysreg_by_encoding(u32 sys_id)
read_sysreg_case(SYS_ID_AA64PFR0_EL1);
read_sysreg_case(SYS_ID_AA64PFR1_EL1);
read_sysreg_case(SYS_ID_AA64ZFR0_EL1);
read_sysreg_case(SYS_ID_AA64DFR0_EL1);
read_sysreg_case(SYS_ID_AA64DFR1_EL1);
read_sysreg_case(SYS_ID_AA64MMFR0_EL1);