lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 9 Dec 2016 10:24:05 -0800 From: Andy Lutomirski <luto@...nel.org> To: x86@...nel.org Cc: One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>, Borislav Petkov <bp@...en8.de>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Brian Gerst <brgerst@...il.com>, Matthew Whitehead <tedheadster@...il.com>, Henrique de Moraes Holschuh <hmh@....eng.br>, Peter Zijlstra <peterz@...radead.org>, xen-devel <Xen-devel@...ts.xen.org>, Juergen Gross <jgross@...e.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Andrew Cooper <andrew.cooper3@...rix.com>, Andy Lutomirski <luto@...nel.org> Subject: [PATCH v4 1/4] x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels We support various non-Intel CPUs that don't have the CPUID instruction, so the M486 test was wrong. For now, fix it with a big hammer: handle missing CPUID on all 32-bit CPUs. Reported-by: One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk> Signed-off-by: Andy Lutomirski <luto@...nel.org> --- arch/x86/include/asm/processor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 984a7bf17f6a..64fbc937d586 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -595,7 +595,7 @@ static inline void sync_core(void) { int tmp; -#ifdef CONFIG_M486 +#ifdef CONFIG_X86_32 /* * Do a CPUID if available, otherwise do a jump. The jump * can conveniently enough be the jump around CPUID. -- 2.9.3
Powered by blists - more mailing lists