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authorPaolo Bonzini <pbonzini@redhat.com>2020-02-28 10:42:31 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2020-02-28 10:45:28 +0100
commit4f337faf1c55e55bdc49df13fcb3a3c45655899e (patch)
tree362de3a83d19657b9bf767c0250b8bcda33803e2
parent575b255c1663c8fccc41fe965dcac281e3113c65 (diff)
KVM: allow disabling -Werror
Restrict -Werror to well-tested configurations and allow disabling it via Kconfig. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/Kconfig13
-rw-r--r--arch/x86/kvm/Makefile2
2 files changed, 14 insertions, 1 deletions
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 991019d5eee1..1bb4927030af 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -59,6 +59,19 @@ config KVM
If unsure, say N.
+config KVM_WERROR
+ bool "Compile KVM with -Werror"
+ # KASAN may cause the build to fail due to larger frames
+ default y if X86_64 && !KASAN
+ # We use the dependency on !COMPILE_TEST to not be enabled
+ # blindly in allmodconfig or allyesconfig configurations
+ depends on (X86_64 && !KASAN) || !COMPILE_TEST
+ depends on EXPERT
+ help
+ Add -Werror to the build flags for (and only for) i915.ko.
+
+ If in doubt, say "N".
+
config KVM_INTEL
tristate "KVM for Intel (and compatible) processors support"
depends on KVM && IA32_FEAT_CTL
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 4654e97a05cc..e553f0fdd87d 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
ccflags-y += -Iarch/x86/kvm
-ccflags-y += -Werror
+ccflags-$(CONFIG_KVM_WERROR) += -Werror
KVM := ../../../virt/kvm

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