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| author |   Thomas Gleixner <tglx@linutronix.de> | 2019-11-11 23:03:29 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-16 11:24:05 +0100 |
| commit | a24ca9976843156eabbc5f2d798954b5674d1b61 (patch) | |
| tree | c1388bd5a00df2d9be5ca8efd602984a9dfbb6e8 /arch/x86/xen | |
| parent | x86/iopl: Restrict iopl() permission scope (diff) | |
| download | linux-dev-a24ca9976843156eabbc5f2d798954b5674d1b61.tar.xz linux-dev-a24ca9976843156eabbc5f2d798954b5674d1b61.zip | |
x86/iopl: Remove legacy IOPL option
The IOPL emulation via the I/O bitmap is sufficient. Remove the legacy
cruft dealing with the (e)flags based IOPL mechanism.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com> (Paravirt and Xen parts)
Acked-by: Andy Lutomirski <luto@kernel.org>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 5bfea374a160..ae4a41ca19f6 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -837,15 +837,6 @@ static void xen_load_sp0(unsigned long sp0) this_cpu_write(cpu_tss_rw.x86_tss.sp0, sp0); } -void xen_set_iopl_mask(unsigned mask) -{ - struct physdev_set_iopl set_iopl; - - /* Force the change at ring 0. */ - set_iopl.iopl = (mask == 0) ? 1 : (mask >> 12) & 3; - HYPERVISOR_physdev_op(PHYSDEVOP_set_iopl, &set_iopl); -} - static void xen_io_delay(void) { } @@ -1055,7 +1046,6 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { .write_idt_entry = xen_write_idt_entry, .load_sp0 = xen_load_sp0, - .set_iopl_mask = xen_set_iopl_mask, .io_delay = xen_io_delay, /* Xen takes care of %gs when switching to usermode for us */ |