From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: xen-devel@lists.xenproject.org, konrad@kernel.org,
ross.lagerwall@citrix.com, julien.grall@arm.com,
sstabellini@kernel.org
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Jan Beulich <jbeulich@suse.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: [PATCH v4 16/16] livepatch: In xen_nop test-case remove the .bss and .data sections
Date: Fri, 16 Sep 2016 12:38:28 -0400 [thread overview]
Message-ID: <1474043908-12101-17-git-send-email-konrad.wilk@oracle.com> (raw)
In-Reply-To: <1474043908-12101-1-git-send-email-konrad.wilk@oracle.com>
As they are not needed for the livepatch to work.
Also this allows us to properly test:
"livepatch: Disallow applying after an revert" as the livepatch
will now only have the minimalistic sections:
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .note.gnu.build-i NOTE 0000000000000000 00000040
0000000000000024 0000000000000000 A 0 0 4
[ 2] .text PROGBITS 0000000000000024 00000064
0000000000000000 0000000000000000 AX 0 0 4
[ 3] .livepatch.depend PROGBITS 0000000000000000 00000064
0000000000000024 0000000000000000 A 0 0 1
[ 4] .livepatch.funcs PROGBITS 0000000000000000 000000a0
0000000000000040 0000000000000000 WA 0 0 32
[ 5] .note.GNU-stack PROGBITS 0000000000000000 000000e0
0000000000000000 0000000000000000 X 0 0 1
[ 6] .comment PROGBITS 0000000000000000 000000e0
000000000000002d 0000000000000001 MS 0 0 1
[ 7] .shstrtab STRTAB 0000000000000000 0000010d
0000000000000071 0000000000000000 0 0 1
[ 8] .symtab SYMTAB 0000000000000000 00000400
00000000000000c0 0000000000000018 9 7 8
[ 9] .strtab STRTAB 0000000000000000 000004c0
000000000000000f 0000000000000000 0 0 1
In which only .livepatch.funcs is write-able.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
v4: New submission
---
xen/test/livepatch/Makefile | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xen/test/livepatch/Makefile b/xen/test/livepatch/Makefile
index d7a4735..41ad59d 100644
--- a/xen/test/livepatch/Makefile
+++ b/xen/test/livepatch/Makefile
@@ -104,6 +104,8 @@ xen_nop.o: config.h
.PHONY: $(LIVEPATCH_NOP)
$(LIVEPATCH_NOP): xen_nop.o note.o
$(LD) $(LDFLAGS) $(build_id_linker) -r -o $(LIVEPATCH_NOP) $^
+ $(OBJCOPY) --remove-section=.bss --remove-section=.data $@
+ $(OBJCOPY) --strip-unneeded $@
.PHONY: livepatch
livepatch: $(LIVEPATCH) $(LIVEPATCH_BYE) $(LIVEPATCH_REPLACE) $(LIVEPATCH_NOP)
--
2.5.5
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next prev parent reply other threads:[~2016-09-16 16:38 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-16 16:38 [PATCH v4] Livepatch for ARM 64 and 32 Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 01/16] arm/x86/common: Add HAS_[ALTERNATIVE|EX_TABLE] Konrad Rzeszutek Wilk
2016-09-19 9:09 ` Jan Beulich
2016-09-19 9:26 ` Julien Grall
2016-09-19 14:04 ` Konrad Rzeszutek Wilk
2016-09-19 14:09 ` Julien Grall
2016-09-19 14:43 ` Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 02/16] livepatch: Reject payloads with .alternative or .ex_table if support is not built-in Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 03/16] arm: poison initmem when it is freed Konrad Rzeszutek Wilk
2016-09-19 9:35 ` Julien Grall
2016-09-19 14:19 ` Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 04/16] livepatch: Initial ARM64 support Konrad Rzeszutek Wilk
2016-09-19 10:26 ` Julien Grall
2016-09-19 14:33 ` Konrad Rzeszutek Wilk
2016-09-20 9:40 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 05/16] livepatch: ARM/x86: Check displacement of old_addr and new_addr Konrad Rzeszutek Wilk
2016-09-19 9:19 ` Jan Beulich
2016-09-19 13:12 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 06/16] livepatch: ARM 32|64: Ignore mapping symbols: $[d, a, x] Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 07/16] livepatch/arm/x86: Check payload for for unwelcomed symbols Konrad Rzeszutek Wilk
2016-09-19 9:27 ` Jan Beulich
2016-09-19 13:33 ` Julien Grall
2016-09-19 14:11 ` Jan Beulich
2016-09-19 14:13 ` Julien Grall
2016-09-19 14:48 ` Jan Beulich
2016-09-19 17:32 ` Konrad Rzeszutek Wilk
2016-09-20 7:00 ` Jan Beulich
2016-09-20 9:44 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 08/16] livepatch: Move test-cases to their own sub-directory in test Konrad Rzeszutek Wilk
2016-09-16 16:58 ` Konrad Rzeszutek Wilk
2016-09-16 16:38 ` [PATCH v4 09/16] livepatch: tests: Make them compile under ARM64 Konrad Rzeszutek Wilk
2016-09-19 13:35 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 10/16] livepatch: x86, ARM, alternative: Expose FEATURE_LIVEPATCH Konrad Rzeszutek Wilk
2016-09-19 13:47 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 11/16] xen/arm32: Add an helper to invalidate all instruction caches Konrad Rzeszutek Wilk
2016-09-19 14:24 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 12/16] bug/x86/arm: Align bug_frames sections Konrad Rzeszutek Wilk
2016-09-19 9:29 ` Jan Beulich
2016-09-19 14:34 ` Julien Grall
2016-09-19 14:35 ` Julien Grall
2016-09-19 20:19 ` Konrad Rzeszutek Wilk
2016-09-19 20:26 ` Konrad Rzeszutek Wilk
2016-09-20 9:46 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 13/16] livepatch: Initial ARM32 support Konrad Rzeszutek Wilk
2016-09-19 14:39 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 14/16] livepatch, arm[32|64]: Share arch_livepatch_revert_jmp Konrad Rzeszutek Wilk
2016-09-19 14:43 ` Julien Grall
2016-09-16 16:38 ` [PATCH v4 15/16] livepatch: arm[32, 64], x86: NOP test-case Konrad Rzeszutek Wilk
2016-09-16 16:38 ` Konrad Rzeszutek Wilk [this message]
2016-09-19 9:32 ` [PATCH v4 16/16] livepatch: In xen_nop test-case remove the .bss and .data sections Jan Beulich
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