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| author | Borislav Petkov (AMD) <bp@alien8.de> | 2023-11-30 16:39:33 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-12-11 10:14:28 +0100 |
| commit | f789383fa34a266d0c1a76f272043a15a8edf733 (patch) | |
| tree | d0e586941169d155434a5405d1eb8b76bd9f7f67 /arch/x86/include/asm/ia32.h | |
| parent | 79c603ee43b2674fba0257803bab265147821955 (diff) | |
| download | lwn-f789383fa34a266d0c1a76f272043a15a8edf733.tar.gz lwn-f789383fa34a266d0c1a76f272043a15a8edf733.zip | |
x86/ia32: State that IA32 emulation is disabled
Issue a short message once, on the first try to load a 32-bit process to
save people time when wondering why it won't load and trying to execute
it, would say:
-bash: ./strsep32: cannot execute binary file: Exec format error
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/r/20231130155213.1407-1-bp@alien8.de
Diffstat (limited to 'arch/x86/include/asm/ia32.h')
| -rw-r--r-- | arch/x86/include/asm/ia32.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h index 5a2ae24b1204..094886a8717e 100644 --- a/arch/x86/include/asm/ia32.h +++ b/arch/x86/include/asm/ia32.h @@ -2,7 +2,6 @@ #ifndef _ASM_X86_IA32_H #define _ASM_X86_IA32_H - #ifdef CONFIG_IA32_EMULATION #include <linux/compat.h> @@ -84,4 +83,14 @@ static inline bool ia32_enabled(void) #endif +static inline bool ia32_enabled_verbose(void) +{ + bool enabled = ia32_enabled(); + + if (IS_ENABLED(CONFIG_IA32_EMULATION) && !enabled) + pr_notice_once("32-bit emulation disabled. You can reenable with ia32_emulation=on\n"); + + return enabled; +} + #endif /* _ASM_X86_IA32_H */ |