[PATCH] x86/paravirt: Remove unused paravirt_disable_iospace

[linux@treblig.org]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

The last use of paravirt_disable_iospace() was removed in 2015 by
commit d1c29465b8a5 ("lguest: don't disable iospace.")

Remove it.

Note the comment above it about 'entry.S' is unrelated to this
but stayed when intervening code got deleted.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
---
 arch/x86/kernel/paravirt.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 1ccaa3397a67..debe92854774 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -90,26 +90,6 @@ void paravirt_set_sched_clock(u64 (*func)(void))
 	static_call_update(pv_sched_clock, func);
 }
 
-/* These are in entry.S */
-static struct resource reserve_ioports = {
-	.start = 0,
-	.end = IO_SPACE_LIMIT,
-	.name = "paravirt-ioport",
-	.flags = IORESOURCE_IO | IORESOURCE_BUSY,
-};
-
-/*
- * Reserve the whole legacy IO space to prevent any legacy drivers
- * from wasting time probing for their hardware.  This is a fairly
- * brute-force approach to disabling all non-virtual drivers.
- *
- * Note that this must be called very early to have any effect.
- */
-int paravirt_disable_iospace(void)
-{
-	return request_resource(&ioport_resource, &reserve_ioports);
-}
-
 #ifdef CONFIG_PARAVIRT_XXL
 static noinstr void pv_native_write_cr2(unsigned long val)
 {
-- 
2.48.1