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| author | Nicolai Stange <nstange@suse.de> | 2018-07-29 12:15:33 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-08-05 09:53:13 +0200 |
| commit | 447ae316670230d7d29430e2cbf1f5db4f49d14c (patch) | |
| tree | 9ab0392a39391993a79ec49f77c1ab26e8ff74a8 /arch/x86/mm/pti.c | |
| parent | x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d (diff) | |
| download | linux-447ae316670230d7d29430e2cbf1f5db4f49d14c.tar.xz linux-447ae316670230d7d29430e2cbf1f5db4f49d14c.zip | |
x86: Don't include linux/irq.h from asm/hardirq.h
The next patch in this series will have to make the definition of
irq_cpustat_t available to entering_irq().
Inclusion of asm/hardirq.h into asm/apic.h would cause circular header
dependencies like
asm/smp.h
asm/apic.h
asm/hardirq.h
linux/irq.h
linux/topology.h
linux/smp.h
asm/smp.h
or
linux/gfp.h
linux/mmzone.h
asm/mmzone.h
asm/mmzone_64.h
asm/smp.h
asm/apic.h
asm/hardirq.h
linux/irq.h
linux/irqdesc.h
linux/kobject.h
linux/sysfs.h
linux/kernfs.h
linux/idr.h
linux/gfp.h
and others.
This causes compilation errors because of the header guards becoming
effective in the second inclusion: symbols/macros that had been defined
before wouldn't be available to intermediate headers in the #include chain
anymore.
A possible workaround would be to move the definition of irq_cpustat_t
into its own header and include that from both, asm/hardirq.h and
asm/apic.h.
However, this wouldn't solve the real problem, namely asm/harirq.h
unnecessarily pulling in all the linux/irq.h cruft: nothing in
asm/hardirq.h itself requires it. Also, note that there are some other
archs, like e.g. arm64, which don't have that #include in their
asm/hardirq.h.
Remove the linux/irq.h #include from x86' asm/hardirq.h.
Fix resulting compilation errors by adding appropriate #includes to *.c
files as needed.
Note that some of these *.c files could be cleaned up a bit wrt. to their
set of #includes, but that should better be done from separate patches, if
at all.
Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/mm/pti.c')
| -rw-r--r-- | arch/x86/mm/pti.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c index 4d418e705878..fb752d9a3ce9 100644 --- a/arch/x86/mm/pti.c +++ b/arch/x86/mm/pti.c @@ -45,6 +45,7 @@ #include <asm/pgalloc.h> #include <asm/tlbflush.h> #include <asm/desc.h> +#include <asm/sections.h> #undef pr_fmt #define pr_fmt(fmt) "Kernel/User page tables isolation: " fmt |