search for: init_set_iopl_mask

.../asm/paravirt_types.h index 7549b8b..3caf2a8 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -143,6 +143,7 @@ struct pv_cpu_ops { void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); void (*set_iopl_mask)(unsigned mask); +#define INIT_SET_IOPL_MASK(f) .set_iopl_mask = f, void (*wbinvd)(void); void (*io_delay)(void); diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 548d25f..e7969d4 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -383,7 +383,7 @@ __visible struct pv_cpu_ops pv_cpu_ops...

.../asm/paravirt_types.h index 7549b8b..3caf2a8 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -143,6 +143,7 @@ struct pv_cpu_ops { void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); void (*set_iopl_mask)(unsigned mask); +#define INIT_SET_IOPL_MASK(f) .set_iopl_mask = f, void (*wbinvd)(void); void (*io_delay)(void); diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 548d25f..e7969d4 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -383,7 +383,7 @@ __visible struct pv_cpu_ops pv_cpu_ops...

...ys_ioperm 240 - -240 init_tss 8576 384 -8192 Signed-off-by: Josh Triplett <josh at joshtriplett.org> --- v3: Eliminated several #ifdefs, and in particular almost all #ifdefs in .c files, by adding a macro INIT_SET_IOPL_MASK to use in place of the initializer for set_iopl_mask, and using __maybe_unused rather than wrapping function definitions in #ifdef. Rebased on v3.18-rc1. Recomputed bloat-o-meter. I assume this should go through the x86 tree rather than the tiny tree. arch/x86/Kconfig...

...ys_ioperm 240 - -240 init_tss 8576 384 -8192 Signed-off-by: Josh Triplett <josh at joshtriplett.org> --- v3: Eliminated several #ifdefs, and in particular almost all #ifdefs in .c files, by adding a macro INIT_SET_IOPL_MASK to use in place of the initializer for set_iopl_mask, and using __maybe_unused rather than wrapping function definitions in #ifdef. Rebased on v3.18-rc1. Recomputed bloat-o-meter. I assume this should go through the x86 tree rather than the tiny tree. arch/x86/Kconfig...

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

...240 - -240 > init_tss 8576 384 -8192 > > Signed-off-by: Josh Triplett <josh at joshtriplett.org> > --- > v3: Eliminated several #ifdefs, and in particular almost all #ifdefs in > .c files, by adding a macro INIT_SET_IOPL_MASK to use in place of > the initializer for set_iopl_mask, and using __maybe_unused rather > than wrapping function definitions in #ifdef. Rebased on v3.18-rc1. > Recomputed bloat-o-meter. > > I assume this should go through the x86 tree rather than the tiny tree. > >...

This patch series makes it possible to compile out the userspace IO system calls, iopl and ioperm. The first patch does some 32/64 unification in copy_thread to make subsequent changes easier. The second patch simplifies the complex calculation of the TSS segment limit, which also makes it easier to change in the last patch. Patches 3-9 introduce helpers to make it easier to compile out IO.

This patch series makes it possible to compile out the userspace IO system calls, iopl and ioperm. The first patch does some 32/64 unification in copy_thread to make subsequent changes easier. The second patch simplifies the complex calculation of the TSS segment limit, which also makes it easier to change in the last patch. Patches 3-9 introduce helpers to make it easier to compile out IO.

On Wed, 29 Oct 2014, Josh Triplett wrote: > v3: Eliminated several #ifdefs, and in particular almost all #ifdefs in > .c files, by adding a macro INIT_SET_IOPL_MASK to use in place of > the initializer for set_iopl_mask, and using __maybe_unused rather > than wrapping function definitions in #ifdef. Rebased on v3.18-rc1. > Recomputed bloat-o-meter. Can you please split this patch into smaller pieces? - Seperate the code move to head...

...caf2a8..a22a5d4 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -142,8 +142,12 @@ struct pv_cpu_ops { void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); +#ifdef CONFIG_X86_IOPORT void (*set_iopl_mask)(unsigned mask); #define INIT_SET_IOPL_MASK(f) .set_iopl_mask = f, +#else +#define INIT_SET_IOPL_MASK(f) +#endif void (*wbinvd)(void); void (*io_delay)(void); diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 1fa78f7..6e0b639 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/p...

...caf2a8..a22a5d4 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -142,8 +142,12 @@ struct pv_cpu_ops { void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); +#ifdef CONFIG_X86_IOPORT void (*set_iopl_mask)(unsigned mask); #define INIT_SET_IOPL_MASK(f) .set_iopl_mask = f, +#else +#define INIT_SET_IOPL_MASK(f) +#endif void (*wbinvd)(void); void (*io_delay)(void); diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 1fa78f7..6e0b639 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/p...