From a3e8fe814ad15c16735cdf394454a8bd96eb4d56 Mon Sep 17 00:00:00 2001 From: Brian Gerst Date: Thu, 23 Jan 2025 14:07:33 -0500 Subject: [PATCH] x86/build: Raise the minimum GCC version to 8.1 Stack protector support on 64-bit currently requires that the percpu section is linked at absolute address 0, because older compilers fixed the location of the canary value relative to the GS segment base. GCC 8.1 introduced options to change where the canary value is located, allowing it to be configured as a standard per-CPU variable. This has already been done for 32-bit. Doing the same for 64-bit will enable removing the code needed to support zero-based percpu. Signed-off-by: Brian Gerst Signed-off-by: Ingo Molnar Reviewed-by: Ard Biesheuvel Cc: Linus Torvalds Link: https://lore.kernel.org/r/20250123190747.745588-2-brgerst@gmail.com --- scripts/min-tool-version.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh index 91c91201212c4..06c4e410ecaba 100755 --- a/scripts/min-tool-version.sh +++ b/scripts/min-tool-version.sh @@ -19,6 +19,8 @@ binutils) gcc) if [ "$ARCH" = parisc64 ]; then echo 12.0.0 + elif [ "$SRCARCH" = x86 ]; then + echo 8.1.0 else echo 5.1.0 fi