Geert Uytterhoeven <[email protected]> writes:
> On '030, the relevant code is:
>
> if (mmusr & (MMU_I | MMU_WP)) {
> if (ssw & 4) {
> printk("Data %s fault at %#010lx in %s (pc=%#lx)\n",
> ssw & RW ? "read" : "write",
> fp->un.fmtb.daddr,
> space_names[ssw & DFC], fp->ptregs.pc);
> goto buserr;
> }
> /* Don't try to do anything further if an exception was
> handled. */
> if (do_page_fault (&fp->ptregs, addr, errorcode) < 0)
> return;
>
> But we never get to do_page_fault(), as ssw = 5 (SUPER_DATA).
>
> The "if (ssw & 4) { ... }" chunk was added in commit
> e48d483d581278fae02a5fffeba2b1fef47be4d4 (from full-history-linux):
I guess it just reinstates the condition in the first hunk.
- if (fp->ptregs.sr & PS_S) {
- /* kernel fault must be a data fault to user space */
Andreas.
--
Andreas Schwab, [email protected]
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