[PATCH 38/39] x86/mm/pti: Add Warning when booting on a PCID capable CPU

From: Joerg Roedel Warn the user in case the performance can be significantly improved by switching to a 64-bit kernel. Suggested-by: Andy Lutomirski Signed-off-by: Joerg Roedel --- arch/x86/mm/pti.c | 22 ++ 1 file changed, 22 insertions(+) diff --git a/arch/x86/mm/pti.c

Re: [PATCH 38/39] x86/mm/pti: Add Warning when booting on a PCID capable CPU

On Fri, Jul 13, 2018 at 11:59:44AM -0700, Andy Lutomirski wrote: > On Wed, Jul 11, 2018 at 4:29 AM, Joerg Roedel wrote: > > From: Joerg Roedel > > > > Warn the user in case the performance can be significantly > > improved by switching to a 64-bit kernel. > > ... > > > +#ifdef CONFIG_X86_32 > >

Re: [PATCH 38/39] x86/mm/pti: Add Warning when booting on a PCID capable CPU

On Wed, Jul 11, 2018 at 4:29 AM, Joerg Roedel wrote: > From: Joerg Roedel > > Warn the user in case the performance can be significantly > improved by switching to a 64-bit kernel. ... > +#ifdef CONFIG_X86_32 > + if (boot_cpu_has(X86_FEATURE_PCID)) { I'm a bit confused. Wouldn't the setu

[PATCH 38/39] x86/mm/pti: Add Warning when booting on a PCID capable CPU

From: Joerg Roedel Warn the user in case the performance can be significantly improved by switching to a 64-bit kernel. Suggested-by: Andy Lutomirski Signed-off-by: Joerg Roedel --- arch/x86/mm/pti.c | 16 1 file changed, 16 insertions(+) diff --git a/arch/x86/mm/pti.c b/arc