diff mbox series

[v5,6/6] target/i386: Prohibit target specific KVM prototypes on user emulation

Message ID 20230913093009.83520-7-philmd@linaro.org (mailing list archive)
State New, archived
Headers show
Series target/i386: Restrict system-specific features from user emulation | expand

Commit Message

Philippe Mathieu-Daudé Sept. 13, 2023, 9:30 a.m. UTC 
None of these target-specific prototypes should be used
by user emulation. Remove their declaration there, so we
get a compile failure if ever used (instead of having to
deal with linker and its possible optimizations, such
dead code removal).

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/i386/kvm/kvm_i386.h | 4 ++++
 target/i386/cpu.c          | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/i386/kvm/kvm_i386.h b/target/i386/kvm/kvm_i386.h
index 55d4e68c34..5ef73f0a1c 100644
--- a/target/i386/kvm/kvm_i386.h
+++ b/target/i386/kvm/kvm_i386.h
@@ -13,6 +13,10 @@ 
 
 #include "sysemu/kvm.h"
 
+#ifdef CONFIG_USER_ONLY
+#error Cannot include kvm_i386.h from user emulation
+#endif
+
 #ifdef CONFIG_KVM
 
 #define kvm_pit_in_kernel() \
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index c201ff26bd..db8ed6284d 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -26,7 +26,7 @@ 
 #include "tcg/helper-tcg.h"
 #include "sysemu/reset.h"
 #include "sysemu/hvf.h"
-#include "kvm/kvm_i386.h"
+#include "sysemu/kvm.h"
 #include "sev.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
@@ -40,6 +40,7 @@ 
 #include "exec/address-spaces.h"
 #include "hw/boards.h"
 #include "hw/i386/sgx-epc.h"
+#include "kvm/kvm_i386.h"
 #endif
 
 #include "disas/capstone.h"