From: Konrad Rzeszutek Wilk <konrad@kernel.org>
To: xen-devel@lists.xenproject.org, ross.lagerwall@citrix.com,
konrad.wilk@oracle.com, julien.grall@arm.com,
sstabellini@kernel.org
Cc: andrew.cooper3@citrix.com, jbeulich@suse.com
Subject: [PATCH v4 09/11] livepatch/tests: Make sure all .livepatch.funcs sections are read-only
Date: Wed, 20 Sep 2017 18:31:46 -0400 [thread overview]
Message-ID: <20170920223148.13137-10-konrad.wilk@oracle.com> (raw)
In-Reply-To: <20170920223148.13137-1-konrad.wilk@oracle.com>
Instead of being writable (.data). This mimics the behavior of what
livepatch-build-tools do.
Other approaches such as 'struct const livepatch_funcs' still result
in the WA section attributes.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
Cc: Ross Lagerwall <ross.lagerwall@citrix.com>
v2: First posting.
v3: Don't do multiple objcopy invocations.
---
xen/test/livepatch/Makefile | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/xen/test/livepatch/Makefile b/xen/test/livepatch/Makefile
index b48669cc13..9e45a81452 100644
--- a/xen/test/livepatch/Makefile
+++ b/xen/test/livepatch/Makefile
@@ -53,7 +53,8 @@ xen_hello_world.o: config.h livepatch_depends.h
.PHONY: $(LIVEPATCH)
$(LIVEPATCH): xen_hello_world_func.o xen_hello_world.o
$(LD) $(LDFLAGS) $(build_id_linker) -r -o $(LIVEPATCH) $^
- $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) $@
+ $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) \
+ --set-section-flags .livepatch.funcs=alloc,readonly $@
#
# This target is only accessible if CONFIG_LIVEPATCH is defined, which
@@ -89,21 +90,24 @@ xen_bye_world.o: config.h hello_world_livepatch_depends.h
.PHONY: $(LIVEPATCH_BYE)
$(LIVEPATCH_BYE): xen_bye_world_func.o xen_bye_world.o
$(LD) $(LDFLAGS) $(build_id_linker) -r -o $(LIVEPATCH_BYE) $^
- $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) $@
+ $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) \
+ --set-section-flags .livepatch.funcs=alloc,readonly $@
xen_replace_world.o: config.h livepatch_depends.h
.PHONY: $(LIVEPATCH_REPLACE)
$(LIVEPATCH_REPLACE): xen_replace_world_func.o xen_replace_world.o
$(LD) $(LDFLAGS) $(build_id_linker) -r -o $(LIVEPATCH_REPLACE) $^
- $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) $@
+ $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) \
+ --set-section-flags .livepatch.funcs=alloc,readonly $@
xen_nop.o: config.h livepatch_depends.h
.PHONY: $(LIVEPATCH_NOP)
$(LIVEPATCH_NOP): xen_nop.o
$(LD) $(LDFLAGS) $(build_id_linker) -r -o $(LIVEPATCH_NOP) $^
- $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) $@
+ $(OBJCOPY) --redefine-sym $(NOTE_SYMBOL)=$@_$(NOTE_SYMBOL) \
+ --set-section-flags .livepatch.funcs=alloc,readonly $@
.PHONY: livepatch
livepatch: $(LIVEPATCH) $(LIVEPATCH_BYE) $(LIVEPATCH_REPLACE) $(LIVEPATCH_NOP)
--
2.13.3
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next prev parent reply other threads:[~2017-09-20 22:32 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 22:31 [PATCH v4] Livepatching patch set for 4.10 Konrad Rzeszutek Wilk
2017-09-20 22:31 ` [PATCH v4 01/11] livepatch: Expand check for safe_for_reapply if livepatch has only .rodata Konrad Rzeszutek Wilk
2017-10-05 13:47 ` Ross Lagerwall
2017-10-05 13:51 ` Konrad Rzeszutek Wilk
2017-10-05 14:08 ` Ross Lagerwall
2017-09-20 22:31 ` [PATCH v4 02/11] livepatch: Tighten alignment checks Konrad Rzeszutek Wilk
2017-09-20 22:31 ` [PATCH v4 03/11] livepatch: Include sizes when an mismatch occurs Konrad Rzeszutek Wilk
2017-09-21 11:58 ` Jan Beulich
2017-10-05 14:06 ` Ross Lagerwall
2017-09-20 22:31 ` [PATCH v4 04/11] livepatch/arm[32, 64]: Don't load and crash on livepatches loaded with wrong text alignment Konrad Rzeszutek Wilk
2017-09-22 14:05 ` Jan Beulich
2017-10-09 8:35 ` Ross Lagerwall
2017-09-20 22:31 ` [PATCH v4 05/11] alternative/x86/arm32: Align altinstructions (and altinstr_replacement) sections Konrad Rzeszutek Wilk
2017-09-21 12:01 ` Jan Beulich
2017-09-20 22:31 ` [PATCH v4 06/11] mkhex: Move it to tools/misc Konrad Rzeszutek Wilk
2017-09-21 8:56 ` Wei Liu
2017-09-20 22:31 ` [PATCH v4 07/11] livepatch/x86/arm[32, 64]: Force .livepatch.depends section to be uint32_t aligned Konrad Rzeszutek Wilk
2017-10-05 14:11 ` Ross Lagerwall
2017-09-20 22:31 ` [PATCH v4 08/11] livepatch/arm/x86: Rename note_depends symbol from test-cases Konrad Rzeszutek Wilk
2017-09-21 12:05 ` Jan Beulich
2017-09-20 22:31 ` Konrad Rzeszutek Wilk [this message]
2017-09-20 22:31 ` [PATCH v4 10/11] livepatch/arm[32, 64]: Modify .livepatch.funcs section to be RW when patching Konrad Rzeszutek Wilk
2017-09-21 12:16 ` Jan Beulich
2017-09-21 14:58 ` Julien Grall
2017-09-21 15:09 ` Jan Beulich
2017-09-20 22:31 ` [PATCH v4 11/11] livepatch: Declare live patching as a supported feature Konrad Rzeszutek Wilk
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