Re: Fix BUG_ON() reporting in real mode on powerpc

On 02/17/2016 12:46 PM, Balbir Singh wrote:

quoted

quoted

It might be a little better to do this:

		bugaddr = regs->nip;
		if (REGION_ID(bugaddr) == 0 && !(regs->msr & MSR_IR))
			bugaddr += PAGE_OFFSET;

It is possible to execute from addresses with the 0xc000... on top in
real mode, because the CPU ignores the top 4 address bits in real
mode.

Good catch! Thank you

Changelog:
     Don't add PAGE_OFFSET blindly, check if REGION_ID is 0

Cant we use USER_REGION_ID directly ?