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| author |   Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> | 2014-11-03 14:28:14 +0200 |
|---|---|---|
| committer |   Stafford Horne <shorne@gmail.com> | 2017-02-06 21:50:43 +0900 |
| commit | 63104c06a9eddf53f88f6d16196bb036c62967b2 (patch) | |
| tree | 3f4bfcaa467d0546512602d5ad961e5f62f4e529 /arch/openrisc/kernel/process.c | |
| parent | openrisc: head: refactor out tlb flush into it's own function (diff) | |
| download | linux-dev-63104c06a9eddf53f88f6d16196bb036c62967b2.tar.xz linux-dev-63104c06a9eddf53f88f6d16196bb036c62967b2.zip | |
openrisc: add l.lwa/l.swa emulation
This adds an emulation layer for implementations
that lack the l.lwa and l.swa instructions.
It handles these instructions both in kernel space and
user space.
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
[shorne@gmail.com: Added delay slot pc adjust logic]
Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc/kernel/process.c')
| -rw-r--r-- | arch/openrisc/kernel/process.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index d7990df9025a..c49350b200e1 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -226,6 +226,7 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t * fpu) extern struct thread_info *_switch(struct thread_info *old_ti, struct thread_info *new_ti); +extern int lwa_flag; struct task_struct *__switch_to(struct task_struct *old, struct task_struct *new) @@ -243,6 +244,8 @@ struct task_struct *__switch_to(struct task_struct *old, new_ti = new->stack; old_ti = old->stack; + lwa_flag = 0; + current_thread_info_set[smp_processor_id()] = new_ti; last = (_switch(old_ti, new_ti))->task; |