This patch proposes to add an extra .note section in the corefile to dump the
CPUID information of a machine. This is being done to solve the issue of tools
like the debuggers having to deal with coredumps from machines with varying
XSAVE layouts in spite of having the same XCR0 bits. The new proposed .note
section, at this point, consists of an array of records containing the
information of each extended feature that is present. This provides details
about the offsets and the sizes of the various extended save state components
of the machine where the application crash occurred. Requesting a review for
this patch.
Vignesh Balasubramanian (1):
x86/elf: Add a new .note section containing xfeatures buffer layout
info to x86 core files
arch/x86/Kconfig | 1 +
arch/x86/include/asm/elf.h | 9 ++++
arch/x86/kernel/fpu/xstate.c | 87 ++++++++++++++++++++++++++++++++++++
fs/binfmt_elf.c | 4 +-
include/uapi/linux/elf.h | 1 +
5 files changed, 100 insertions(+), 2 deletions(-)
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2.34.1
