[lkml]   [2013]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject%pa format specifier issues
I went to go use the shiny new %pa specifier:

void test_printk_pa(void)
phys_addr_t p = 0x1234;
printk("p: %pa\n", p);

but gcc is spewing out warnings at me:

> arch/x86/mm/physaddr.c: In function ‘test_printk_pa’:
> arch/x86/mm/physaddr.c:95:2: warning: format ‘%p’ expects argument of type ‘void *’, but argument 2 has type ‘phys_addr_t’ [-Wformat]

I assume that's because gcc doesn't know about '%pa', and just assumes
it's a plain '%p'. Should we be turning these warnings off somehow?

Plus when I actually go to run it, vsnprintf() crashes the kernel, which
usually happens if printk()'s format doesn't match the size of its

Am I doing something really stupid here?

This is using a 32-bit i386 kernel.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2013-03-06 02:41    [W:2.112 / U:0.244 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site