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| author | Christoph Hellwig <hch@lst.de> | 2019-10-28 13:10:32 +0100 |
|---|---|---|
| committer | Paul Walmsley <paul.walmsley@sifive.com> | 2019-11-05 09:20:42 -0800 |
| commit | a4c3733d32a72f11dee86d0731d7565aa6ebe22d (patch) | |
| tree | 45a8cdbf56325f37ad1b04c015aa8f9a5c646e9a /arch/riscv/include/asm/switch_to.h | |
| parent | 0c3ac28931d578324e93afab6ee7b740dfdaff6f (diff) | |
| download | linux-a4c3733d32a72f11dee86d0731d7565aa6ebe22d.tar.gz linux-a4c3733d32a72f11dee86d0731d7565aa6ebe22d.tar.bz2 linux-a4c3733d32a72f11dee86d0731d7565aa6ebe22d.zip | |
riscv: abstract out CSR names for supervisor vs machine mode
Many of the privileged CSRs exist in a supervisor and machine version
that are used very similarly. Provide versions of the CSR names and
fields that map to either the S-mode or M-mode variant depending on
a new CONFIG_RISCV_M_MODE kconfig symbol.
Contains contributions from Damien Le Moal <Damien.LeMoal@wdc.com>
and Paul Walmsley <paul.walmsley@sifive.com>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de> # for drivers/clocksource, drivers/irqchip
[paul.walmsley@sifive.com: updated to apply]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Diffstat (limited to 'arch/riscv/include/asm/switch_to.h')
| -rw-r--r-- | arch/riscv/include/asm/switch_to.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h index ee4f0ac62c9d..407bcc96a710 100644 --- a/arch/riscv/include/asm/switch_to.h +++ b/arch/riscv/include/asm/switch_to.h @@ -17,19 +17,19 @@ extern void __fstate_restore(struct task_struct *restore_from); static inline void __fstate_clean(struct pt_regs *regs) { - regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_CLEAN; + regs->status = (regs->status & ~SR_FS) | SR_FS_CLEAN; } static inline void fstate_off(struct task_struct *task, struct pt_regs *regs) { - regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_OFF; + regs->status = (regs->status & ~SR_FS) | SR_FS_OFF; } static inline void fstate_save(struct task_struct *task, struct pt_regs *regs) { - if ((regs->sstatus & SR_FS) == SR_FS_DIRTY) { + if ((regs->status & SR_FS) == SR_FS_DIRTY) { __fstate_save(task); __fstate_clean(regs); } @@ -38,7 +38,7 @@ static inline void fstate_save(struct task_struct *task, static inline void fstate_restore(struct task_struct *task, struct pt_regs *regs) { - if ((regs->sstatus & SR_FS) != SR_FS_OFF) { + if ((regs->status & SR_FS) != SR_FS_OFF) { __fstate_restore(task); __fstate_clean(regs); } @@ -50,7 +50,7 @@ static inline void __switch_to_aux(struct task_struct *prev, struct pt_regs *regs; regs = task_pt_regs(prev); - if (unlikely(regs->sstatus & SR_SD)) + if (unlikely(regs->status & SR_SD)) fstate_save(prev, regs); fstate_restore(next, task_pt_regs(next)); } |