The following commit has been merged into the x86/core branch of tip: Commit-ID: 3101900218d7b6acbdee8af3e7bcf04acf5bf9ef Gitweb: https://git.kernel.org/tip/3101900218d7b6acbdee8af3e7bcf04acf5bf9ef Author: Dr. David Alan Gilbert <linux@xxxxxxxxxxx> AuthorDate: Mon, 03 Mar 2025 00:44:41 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Mon, 03 Mar 2025 11:19:52 +01:00 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 <linux@xxxxxxxxxxx> Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Reviewed-by: Juergen Gross <jgross@xxxxxxxx> Link: https://lore.kernel.org/r/20250303004441.250451-1-linux@xxxxxxxxxxx --- 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 8b36a95..8e21a1a 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 1dc114c..d0b789d 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) {
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