On Tuesday 20 December 2016 02:33 PM, Balbir Singh wrote:
On 19/12/16 19:06, Madhavan Srinivasan wrote:
Move set_soft_enabled() from powerpc/kernel/irq.c to
asm/hw_irq.c, to force updates to paca-soft_enabled
done via these access function. Add "memory" clobber
to hint compiler since paca->soft_enabled memory is the target
here
+static inline notrace void soft_enabled_set(unsigned long enable)
+{
+ __asm__ __volatile__("stb %0,%1(13)"
+ : : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled))
+ : "memory");
+}
+
Can't we just rewrite this in "C"?
local_paca->soft_enabled = enable
Yes we did discussed this and parked it to handle in the follow on
patchset.
Nick did suggest something of this sort,
__asm__ __volatile__("stb %1,%0" : "=m" (local_paca->soft_enabled) : "r"
(enable));
Balbir Singh.
