Re: [Crash-utility] [PATCH] Fix x86 initialization for {hard, soft}irq_ctx
Dave Anderson <anderson(a)redhat.com> writes:
but we stopped supporting 32-bit x86 in RHEL7. And nobody ever
reported it from any other x86 kernel sources.
Ah, I see. I didn't know RHEL7 dropped support of x86.
I also note that in linux-3.15 the data structure name and variables
were
changed to:
struct irq_stack {
u32 stack[THREAD_SIZE/sizeof(u32)];
} __aligned(THREAD_SIZE);
DECLARE_PER_CPU(struct irq_stack *, hardirq_stack);
DECLARE_PER_CPU(struct irq_stack *, softirq_stack);
So your patch would need more work for 3.15 and later kernels.
Right. That patch is for "per_cpu + irq_ctx" kernel.
Supporting irq_stack itself would be easy. But current x86 crash doesn't
work for v4.9 (still using irq_stack), this is because current kernel
changed switch_to() stack frame format (need to do similar with x86_64).
Thanks.
--
OGAWA Hirofumi <hirofumi(a)mail.parknet.co.jp>