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Message-ID: <4A0136F4.4010504@kernel.org>
Date: Wed, 06 May 2009 00:06:28 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Ingo Molnar <mingo@...e.hu>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: printk %0*X is broken.
it seems someone broke
printk( "%0*X\n", width, x);
looks like 0 is dumped.
YH
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 0 00000000 mask FF0 00000000 write-back
[ 0.000000] 1 base 10 00000000 mask FFF 80000000 write-back
[ 0.000000] 2 base 0 80000000 mask FFF 80000000 uncachable
[ 0.000000] 3 base 0 7F800000 mask FFF FF800000 uncachable
code:
for (i = 0; i < num_var_ranges; ++i) {
if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))
printk(KERN_DEBUG " %u base %0*X%05X000 mask %0*X%05X000 %s\n",
i,
high_width,
mtrr_state.var_ranges[i].base_hi,
mtrr_state.var_ranges[i].base_lo >> 12,
high_width,
mtrr_state.var_ranges[i].mask_hi,
mtrr_state.var_ranges[i].mask_lo >> 12,
mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff));
else
printk(KERN_DEBUG " %u disabled\n", i);
}
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