Thread (212 messages) 212 messages, 19 authors, 2020-09-10

Re: [PATCH 17/22] arm64: vdso: disable LTO

From: Nick Desaulniers <hidden>
Date: 2020-06-24 20:59:16
Also in: linux-arch, linux-kbuild, linux-pci, lkml

On Wed, Jun 24, 2020 at 1:33 PM Sami Tolvanen [off-list ref] wrote:
Filter out CC_FLAGS_LTO for the vDSO.
Just curious about this patch (and the following one for x86's vdso),
do you happen to recall specifically what the issues with the vdso's
are?
quoted hunk ↗ jump to hunk
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---
 arch/arm64/kernel/vdso/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index 556d424c6f52..cfad4c296ca1 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -29,8 +29,8 @@ ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \
 ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18
 ccflags-y += -DDISABLE_BRANCH_PROFILING

-CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS)
-KBUILD_CFLAGS                  += $(DISABLE_LTO)
+CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) \
+                               $(CC_FLAGS_LTO)
 KASAN_SANITIZE                 := n
 UBSAN_SANITIZE                 := n
 OBJECT_FILES_NON_STANDARD      := y
--
2.27.0.212.ge8ba1cc988-goog

-- 
Thanks,
~Nick Desaulniers

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help