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2744a7ce34
Switch them over to apic_update_callback() and remove the code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Wei Liu <wei.liu@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#define pr_fmt(fmt) "APIC: " fmt
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#include <asm/apic.h>
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#include "local.h"
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/* The container for function call overrides */
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struct apic_override __x86_apic_override __initdata;
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#define apply_override(__cb) \
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if (__x86_apic_override.__cb) \
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apic->__cb = __x86_apic_override.__cb
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static __init void restore_override_callbacks(void)
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{
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apply_override(eoi);
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apply_override(native_eoi);
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apply_override(write);
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apply_override(read);
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apply_override(send_IPI);
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apply_override(send_IPI_mask);
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apply_override(send_IPI_mask_allbutself);
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apply_override(send_IPI_allbutself);
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apply_override(send_IPI_all);
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apply_override(send_IPI_self);
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apply_override(icr_read);
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apply_override(icr_write);
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apply_override(wakeup_secondary_cpu);
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apply_override(wakeup_secondary_cpu_64);
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}
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void __init apic_setup_apic_calls(void)
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{
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/* Ensure that the default APIC has native_eoi populated */
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apic->native_eoi = apic->eoi;
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}
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void __init apic_install_driver(struct apic *driver)
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{
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if (apic == driver)
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return;
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apic = driver;
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if (IS_ENABLED(CONFIG_X86_X2APIC) && apic->x2apic_set_max_apicid)
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apic->max_apic_id = x2apic_max_apicid;
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/* Copy the original eoi() callback as KVM/HyperV might overwrite it */
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if (!apic->native_eoi)
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apic->native_eoi = apic->eoi;
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/* Apply any already installed callback overrides */
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restore_override_callbacks();
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pr_info("Switched APIC routing to: %s\n", driver->name);
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}
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