From: "Dr. David Alan Gilbert" <linux@xxxxxxxxxxx>
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@xxxxxxxxxxx>
---
v2
Cleaned up the header
arch/x86/include/asm/paravirt_types.h | 2 --
arch/x86/kernel/paravirt.c | 20 --------------------
2 files changed, 22 deletions(-)
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index fea56b04f436..3c54ac5a9af4 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -242,8 +242,6 @@ extern struct paravirt_patch_template pv_ops;
#define paravirt_ptr(op) [paravirt_opptr] "m" (pv_ops.op)
-int paravirt_disable_iospace(void);
-
/* This generates an indirect call based on the operation type number. */
#define PARAVIRT_CALL \
ANNOTATE_RETPOLINE_SAFE \
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
