From: Jan Beulich Date: Wed, 28 Sep 2011 15:57:52 +0000 (+0100) Subject: x86-64: Fix CFI data for interrupt frames X-Git-Tag: v3.2-rc1~157^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eab9e6137f237681a04649e786cc4d942bedd6d1;p=pandora-kernel.git x86-64: Fix CFI data for interrupt frames The patch titled "x86: Don't use frame pointer to save old stack on irq entry" did not properly adjust CFI directives, so this patch is a follow-up to that one. With the old stack pointer no longer stored in a callee-saved register (plus some offset), we now have to use a CFA expression to describe the memory location where it is being found. This requires the use of .cfi_escape (allowing arbitrary byte streams to be emitted into .eh_frame), as there is no .cfi_def_cfa_expression (which also cannot reasonably be expected, as it would require a full expression parser). Signed-off-by: Jan Beulich Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/4E8360200200007800058467@nat28.tlf.novell.com Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed