Messages in this thread | | | Date | Wed, 18 May 2016 18:23:59 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v12 10/13] arch/x86: enable task isolation functionality |
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On Tue, Apr 05, 2016 at 01:38:39PM -0400, Chris Metcalf wrote: > diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c > index 06cbe25861f1..b02205085571 100644 > --- a/arch/x86/kernel/traps.c > +++ b/arch/x86/kernel/traps.c > @@ -36,6 +36,7 @@ > #include <linux/mm.h> > #include <linux/smp.h> > #include <linux/io.h> > +#include <linux/isolation.h> > > #ifdef CONFIG_EISA > #include <linux/ioport.h> > @@ -382,6 +383,7 @@ dotraplinkage void do_bounds(struct pt_regs *regs, long error_code) > case 2: /* Bound directory has invalid entry. */ > if (mpx_handle_bd_fault()) > goto exit_trap; > + task_isolation_exception("bounds check"); > break; /* Success, it was handled */ > case 1: /* Bound violation. */ > info = mpx_generate_siginfo(regs); > diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c > index 5ce1ed02f7e8..025e9d2850c1 100644 > --- a/arch/x86/mm/fault.c > +++ b/arch/x86/mm/fault.c > @@ -14,6 +14,7 @@ > #include <linux/prefetch.h> /* prefetchw */ > #include <linux/context_tracking.h> /* exception_enter(), ... */ > #include <linux/uaccess.h> /* faulthandler_disabled() */ > +#include <linux/isolation.h> /* task_isolation_exception */ > > #include <asm/cpufeature.h> /* boot_cpu_has, ... */ > #include <asm/traps.h> /* dotraplinkage, ... */ > @@ -1259,6 +1260,7 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code, > local_irq_enable(); > error_code |= PF_USER; > flags |= FAULT_FLAG_USER; > + task_isolation_exception("page fault at %#lx", address); > } else { > if (regs->flags & X86_EFLAGS_IF) > local_irq_enable();
That seems to miss a whole bunch of exceptions... what up?
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