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499dcd4137
We no longer allocate lppacas in an array, so this patch removes the 1kB static alignment for the structure, and enforces the PAPR alignment requirements at allocation time. We can not reduce the 1kB allocation size however, due to existing KVM hypervisors. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Copyright 2006 Michael Ellerman, IBM Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <asm/machdep.h>
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#include <asm/page.h>
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#include <asm/firmware.h>
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#include <asm/kexec.h>
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#include <asm/xics.h>
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#include <asm/xive.h>
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#include <asm/smp.h>
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#include <asm/plpar_wrappers.h>
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#include "pseries.h"
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void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
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{
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/*
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* Don't risk a hypervisor call if we're crashing
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* XXX: Why? The hypervisor is not crashing. It might be better
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* to at least attempt unregister to avoid the hypervisor stepping
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* on our memory.
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*/
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if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
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int ret;
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int cpu = smp_processor_id();
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int hwcpu = hard_smp_processor_id();
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if (get_lppaca()->dtl_enable_mask) {
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ret = unregister_dtl(hwcpu);
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if (ret) {
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pr_err("WARNING: DTL deregistration for cpu "
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"%d (hw %d) failed with %d\n",
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cpu, hwcpu, ret);
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}
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}
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ret = unregister_slb_shadow(hwcpu);
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if (ret) {
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pr_err("WARNING: SLB shadow buffer deregistration "
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"for cpu %d (hw %d) failed with %d\n",
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cpu, hwcpu, ret);
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}
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ret = unregister_vpa(hwcpu);
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if (ret) {
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pr_err("WARNING: VPA deregistration for cpu %d "
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"(hw %d) failed with %d\n", cpu, hwcpu, ret);
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}
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}
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if (xive_enabled())
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xive_kexec_teardown_cpu(secondary);
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else
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xics_kexec_teardown_cpu(secondary);
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}
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