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Peter Anvin" , Nathan Chancellor , Tom Rix , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: Baoquan He , Philipp Rudo , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Ross Zwisler , Steven Rostedt , Simon Horman , Nick Desaulniers , llvm@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, Ricardo Ribalda , stable@vger.kernel.org X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1187; i=ribalda@chromium.org; h=from:subject:message-id; bh=IIFsucnr6ARsGWNiLz4pZTsRxLveIe3HXXJvtbCwLyQ=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBkT7LYnFaWGIKBUoEDbI1Rl1OZD+N1VfYBBA8K+ Cbk2bC/+xiJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCZE+y2AAKCRDRN9E+zzrE iL1pD/96xL2PRv+b9c7ULiPFv8LkyB4WqI/RqOYMHi4+V20nXkJNCl6THZaw46/PXI/ahEyqbtV aINfUi019U0CyjpAbSooeKs0kYmoILtUBcV+0muqaF2FSOLayMDme2oWP94AoGFc9DpK4yF2gc5 piDu93s5rsKR/7UN9swT4exK5JuK5+1K4cRxXRDCk6cT4oDu9VaxWu3jpwJ9N1yZJJaFd9ozcBD tiBzCs9QZ+d8Rk3oo8twJIHoh0jz0VWeHaG6YiiaOuHgmmMmkMn0zafEIdbDZF/ssNRo6NmqhSE 1ut2XoCk4RYoTYZ9D7PimkELbpvJDFePmQAnTXBkBRFIGJjPmn6uXKENW1XxAWV+ZKkY8EjjPiA 7cyOsfuYzGYAKL1B8nlX9IqUkf1xyZvHIhcU0Ekyj9usjx91kt5YQzBHOjlIVMQR3GeOaHiH/I8 qEEESlRHhE+X0b8NCKCUNOlnRvRMDqx7hVLoBich9HqrKbEXRAFcIsigOIOsyrRZ0PsD0mYfSBK NtuPU6Hdo3+JtSls9wVkvPngnrCvKBu7ntG9SyL/5RYHMzf4cs2YMwSzTP9xGgcVCZcgslRbcT2 DQ2SxSadihHzYdn+eTWojbcD6m8KMroml7R3GT3eai+zzKi+LGRymBIYHJ29ghn9S636na8PXcW An9ssGUe6z7KqUQ== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230501_053904_210808_28049488 X-CRM114-Status: GOOD ( 10.74 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org If PGO is enabled, the purgatory ends up with multiple .text sections. This is not supported by kexec and crashes the system. Cc: stable@vger.kernel.org Fixes: 930457057abe ("kernel/kexec_file.c: split up __kexec_load_puragory") Signed-off-by: Ricardo Ribalda --- arch/x86/purgatory/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 82fec66d46d2..7a7a4901ed41 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -14,6 +14,11 @@ $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE CFLAGS_sha256.o := -D__DISABLE_EXPORTS +# When profile optimization is enabled, llvm emits two different overlapping +# text sections, which is not supported by kexec. Remove profile optimization +# flags. +KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%,$(KBUILD_CFLAGS)) + # When linking purgatory.ro with -r unresolved symbols are not checked, # also link a purgatory.chk binary without -r to check for unresolved symbols. PURGATORY_LDFLAGS := -e purgatory_start -z nodefaultlib