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x86/paravirt: Remove unused paravirt_disable_iospace()

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The last use of paravirt_disable_iospace() was removed in 2015 by
commit d1c29465b8 ("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>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20250303004441.250451-1-linux@treblig.org
This commit is contained in:
Dr. David Alan Gilbert 2025-03-03 00:44:41 +00:00 committed by Ingo Molnar
parent 73e8079be9
commit 3101900218
2 changed files with 0 additions and 22 deletions
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2
arch/x86/include/asm/paravirt_types.h
View File

@ -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.
*

20
arch/x86/kernel/paravirt.c
View File

@ -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)
{