On Thu, Dec 10, 2015 at 1:58 PM, Tony Luck <[email protected]> wrote:
> Copy the existing page fault fixup mechanisms to create a new table
> to be used when fixing machine checks. Note:
> 1) At this time we only provide a macro to annotate assembly code
> 2) We assume all fixups will in code builtin to the kernel.
> 3) Only for x86_64
> 4) New code under CONFIG_MCE_KERNEL_RECOVERY
>
> Signed-off-by: Tony Luck <[email protected]>
> ---
> +#ifdef CONFIG_MCE_KERNEL_RECOVERY
> +int fixup_mcexception(struct pt_regs *regs, u64 addr)
> +{
> + const struct exception_table_entry *fixup;
> + unsigned long new_ip;
> +
> + fixup = search_mcexception_tables(regs->ip);
> + if (fixup) {
> + new_ip = ex_fixup_addr(fixup);
> +
> + regs->ip = new_ip;
> + regs->ax = BIT(63) | addr;
Can this be an actual #define?
--Andy
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