From 8491908238c4b3397571e9cff55765d59da03a45 Mon Sep 17 00:00:00 2001 From: Julien Olivain Date: Wed, 2 Aug 2023 23:57:17 +0200 Subject: [PATCH] RISC-V: Force no-pie code generation and static link Some toolchains are now enabling PIE for security reasons by default. When XVisor is built with such a RISC-V toolchain, it is crashing just after OpenSBI, in early Xvisor startup (before any message is printed on the console). Hangs looks like those described in: https://github.com/xvisor/xvisor/issues/144 https://github.com/xvisor/xvisor/issues/159 Forcing -fno-pie code generation and -static link will explicitly disable PIE with those toolchains, hence fixing those issues. This issue was observed while using a riscv64 gcc toolchain from: https://toolchains.bootlin.com/downloads/releases/toolchains/riscv64-lp64d/tarballs/riscv64-lp64d--glibc--bleeding-edge-2022.08-1.tar.bz2 Signed-off-by: Julien Olivain Upstream: https://github.com/xvisor/xvisor/pull/170 --- arch/riscv/cpu/generic/objects.mk | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/riscv/cpu/generic/objects.mk b/arch/riscv/cpu/generic/objects.mk index 230da2a1..576603f6 100644 --- a/arch/riscv/cpu/generic/objects.mk +++ b/arch/riscv/cpu/generic/objects.mk @@ -67,6 +67,11 @@ cpu-cflags += -fno-strict-aliasing -O2 cpu-asflags += $(arch-cflags-y) -march=$(march-nonld-isa-y) cpu-ldflags += $(arch-ldflags-y) -march=$(march-ld-isa-y) +cpu-cflags += -fno-pie +cpu-asflags += -fno-pie +cpu-ldflags += -static +cpu-mergeflags += -static + cpu-objs-y+= cpu_entry.o cpu-objs-y+= cpu_proc.o cpu-objs-y+= cpu_tlb.o -- 2.41.0