From: Dr. David Alan Gilbert Date: Mon, 3 Mar 2025 00:44:41 +0000 (+0000) Subject: x86/paravirt: Remove unused paravirt_disable_iospace() X-Git-Tag: v6.15-rc1~216^2~90 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3101900218d7b6acbdee8af3e7bcf04acf5bf9ef;p=thirdparty%2Flinux.git x86/paravirt: Remove unused paravirt_disable_iospace() 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 Signed-off-by: Borislav Petkov (AMD) Signed-off-by: Ingo Molnar Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/20250303004441.250451-1-linux@treblig.org --- diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 8b36a9562191c..8e21a1a85e74c 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. * diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 1dc114c810ac9..d0b789d042459 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) {