Re: [patch 2/2] x86_64: align RODATA kernel section to 2MB withCONFIG_DEBUG_RODATA

[Suresh Siddha]

On Wed, 2009-10-14 at 20:24 -0700, Sam Ravnborg wrote:
> > +#else
> > +
> > +#define X64_ALIGN_DEBUG_RODATA_BEGIN
> > +#define X64_ALIGN_DEBUG_RODATA_END
> > +
> > +#endif
> 
> A coment describing the purpose of
> this would be nice.

I will update this in the next version of the patch.

> > @@ -726,9 +726,13 @@ void set_kernel_text_ro(void)
> >  
> >  void mark_rodata_ro(void)
> >  {
> > -	unsigned long start = PFN_ALIGN(_text), end = PFN_ALIGN(__end_rodata);
> > +	unsigned long start = PFN_ALIGN(_text);
> >  	unsigned long rodata_start =
> >  		((unsigned long)__start_rodata + PAGE_SIZE - 1) & PAGE_MASK;
> > +	unsigned long end = (unsigned long) &__end_rodata_hpage_align;
> Here the symbol seems to be referenced unconditionally.

This function is defined only for CONFIG_DEBUG_RODATA.

thanks,
suresh

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