diff options
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/kernel/cpu/mtrr/main.c | 4 | ||||
| -rw-r--r-- | arch/i386/kernel/entry.S | 8 | ||||
| -rw-r--r-- | arch/i386/mach-es7000/es7000plat.c | 48 |
3 files changed, 56 insertions, 4 deletions
diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index 55b005152a1..75dc6d5214b 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c @@ -229,6 +229,8 @@ static void set_mtrr(unsigned int reg, unsigned long base, data.smp_size = size; data.smp_type = type; atomic_set(&data.count, num_booting_cpus() - 1); + /* make sure data.count is visible before unleashing other CPUs */ + smp_wmb(); atomic_set(&data.gate,0); /* Start the ball rolling on other CPUs */ @@ -242,6 +244,7 @@ static void set_mtrr(unsigned int reg, unsigned long base, /* ok, reset count and toggle gate */ atomic_set(&data.count, num_booting_cpus() - 1); + smp_wmb(); atomic_set(&data.gate,1); /* do our MTRR business */ @@ -260,6 +263,7 @@ static void set_mtrr(unsigned int reg, unsigned long base, cpu_relax(); atomic_set(&data.count, num_booting_cpus() - 1); + smp_wmb(); atomic_set(&data.gate,0); /* diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index b1f16ee65e4..3c3c220488c 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -367,10 +367,6 @@ ENTRY(system_call) CFI_ADJUST_CFA_OFFSET 4 SAVE_ALL GET_THREAD_INFO(%ebp) - testl $TF_MASK,PT_EFLAGS(%esp) - jz no_singlestep - orl $_TIF_SINGLESTEP,TI_flags(%ebp) -no_singlestep: # system call tracing in operation / emulation /* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */ testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp) @@ -385,6 +381,10 @@ syscall_exit: # setting need_resched or sigpending # between sampling and the iret TRACE_IRQS_OFF + testl $TF_MASK,PT_EFLAGS(%esp) # If tracing set singlestep flag on exit + jz no_singlestep + orl $_TIF_SINGLESTEP,TI_flags(%ebp) +no_singlestep: movl TI_flags(%ebp), %ecx testw $_TIF_ALLWORK_MASK, %cx # current->work jne syscall_exit_work diff --git a/arch/i386/mach-es7000/es7000plat.c b/arch/i386/mach-es7000/es7000plat.c index 9be6ceabf04..ab99072d3f9 100644 --- a/arch/i386/mach-es7000/es7000plat.c +++ b/arch/i386/mach-es7000/es7000plat.c @@ -40,6 +40,7 @@ #include <asm/smp.h> #include <asm/apicdef.h> #include "es7000.h" +#include <mach_mpparse.h> /* * ES7000 Globals @@ -174,6 +175,53 @@ find_unisys_acpi_oem_table(unsigned long *oem_addr) } #endif +/* + * This file also gets compiled if CONFIG_X86_GENERICARCH is set. Generic + * arch already has got following function definitions (asm-generic/es7000.c) + * hence no need to define these for that case. + */ +#ifndef CONFIG_X86_GENERICARCH +void es7000_sw_apic(void); +void __init enable_apic_mode(void) +{ + es7000_sw_apic(); + return; +} + +__init int mps_oem_check(struct mp_config_table *mpc, char *oem, + char *productid) +{ + if (mpc->mpc_oemptr) { + struct mp_config_oemtable *oem_table = + (struct mp_config_oemtable *)mpc->mpc_oemptr; + if (!strncmp(oem, "UNISYS", 6)) + return parse_unisys_oem((char *)oem_table); + } + return 0; +} +#ifdef CONFIG_ACPI +/* Hook from generic ACPI tables.c */ +int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) +{ + unsigned long oem_addr; + if (!find_unisys_acpi_oem_table(&oem_addr)) { + if (es7000_check_dsdt()) + return parse_unisys_oem((char *)oem_addr); + else { + setup_unisys(); + return 1; + } + } + return 0; +} +#else +int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) +{ + return 0; +} +#endif +#endif /* COFIG_X86_GENERICARCH */ + static void es7000_spin(int n) { |