search for: 8ad0778

...pu_ops = { .iret = native_iret, .swapgs = native_swapgs, - .set_iopl_mask = native_set_iopl_mask, + INIT_SET_IOPL_MASK(native_set_iopl_mask) .io_delay = native_io_delay, .start_context_switch = paravirt_nop, diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f044..8ad0778 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -912,7 +912,7 @@ static void xen_load_sp0(struct tss_struct *tss, xen_mc_issue(PARAVIRT_LAZY_CPU); } -static void xen_set_iopl_mask(unsigned mask) +static void __maybe_unused xen_set_iopl_mask(unsigned mask) { struct ph...

...pu_ops = { .iret = native_iret, .swapgs = native_swapgs, - .set_iopl_mask = native_set_iopl_mask, + INIT_SET_IOPL_MASK(native_set_iopl_mask) .io_delay = native_io_delay, .start_context_switch = paravirt_nop, diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f044..8ad0778 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -912,7 +912,7 @@ static void xen_load_sp0(struct tss_struct *tss, xen_mc_issue(PARAVIRT_LAZY_CPU); } -static void xen_set_iopl_mask(unsigned mask) +static void __maybe_unused xen_set_iopl_mask(unsigned mask) { struct ph...

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.

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

...> target->thread.io_bitmap_ptr, > 0, IO_BITMAP_BYTES); > +#else > + return -ENXIO; > +#endif > } > > /* > diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c > index 1a3f044..8ad0778 100644 > --- a/arch/x86/xen/enlighten.c > +++ b/arch/x86/xen/enlighten.c > @@ -912,7 +912,7 @@ static void xen_load_sp0(struct tss_struct *tss, > xen_mc_issue(PARAVIRT_LAZY_CPU); > } > > -static void xen_set_iopl_mask(unsigned mask) > +static void __maybe_unused xen...

....io_bitmap_ptr) return -ENXIO; return user_regset_copyout(&pos, &count, &kbuf, &ubuf, target->thread.io_bitmap_ptr, 0, IO_BITMAP_BYTES); +#else + return -ENXIO; +#endif } /* diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f044..8ad0778 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -912,7 +912,7 @@ static void xen_load_sp0(struct tss_struct *tss, xen_mc_issue(PARAVIRT_LAZY_CPU); } -static void xen_set_iopl_mask(unsigned mask) +static void __maybe_unused xen_set_iopl_mask(unsigned mask) { struct ph...

....io_bitmap_ptr) return -ENXIO; return user_regset_copyout(&pos, &count, &kbuf, &ubuf, target->thread.io_bitmap_ptr, 0, IO_BITMAP_BYTES); +#else + return -ENXIO; +#endif } /* diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f044..8ad0778 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -912,7 +912,7 @@ static void xen_load_sp0(struct tss_struct *tss, xen_mc_issue(PARAVIRT_LAZY_CPU); } -static void xen_set_iopl_mask(unsigned mask) +static void __maybe_unused xen_set_iopl_mask(unsigned mask) { struct ph...