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Last-Modified: Mon, 16 Feb 2026 16:42:17 GMT
Expires: Thu, 14 Feb 2036 16:42:17 GMT
ETag: "09cb63cef74dba3f52eac9904521a86739c46117"

/*
 * hvm_vlapic.h: virtualize LAPIC definitions.
 *
 * Copyright (c) 2004, Intel Corporation.
 * Copyright (c) 2006 Keir Fraser, XenSource Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 */

#ifndef __ASM_X86_HVM_VLAPIC_H__
#define __ASM_X86_HVM_VLAPIC_H__

#include <xen/tasklet.h>
#include <asm/msr.h>
#include <public/hvm/ioreq.h>
#include <asm/hvm/vpt.h>

#define MAX_VECTOR      256

#define vcpu_vlapic(x)   (&(x)->arch.hvm_vcpu.vlapic)
#define vlapic_vcpu(x)   (container_of((x), struct vcpu, arch.hvm_vcpu.vlapic))
#define vlapic_domain(x) (vlapic_vcpu(x)->domain)

#define VLAPIC_ID(vlapic)   \
    (GET_xAPIC_ID(vlapic_get_reg((vlapic), APIC_ID)))

/*
 * APIC can be disabled in two ways:
 *  1. 'Hardware disable': via IA32_APIC_BASE_MSR[11]
 *     CPU should behave as if it does not have an APIC.
 *  2. 'Software disable': via APIC_SPIV[8].
 *     APIC is visible but does not respond to interrupt messages.
 */
#define VLAPIC_HW_DISABLED              0x1
#define VLAPIC_SW_DISABLED              0x2
#define vlapic_sw_disabled(vlapic) ((vlapic)->hw.disabled & VLAPIC_SW_DISABLED)
#define vlapic_hw_disabled(vlapic) ((vlapic)->hw.disabled & VLAPIC_HW_DISABLED)
#define vlapic_disabled(vlapic)    ((vlapic)->hw.disabled)
#define vlapic_enabled(vlapic)     (!vlapic_disabled(vlapic))

#define vlapic_base_address(vlapic)                             \
    ((vlapic)->hw.apic_base_msr & MSR_IA32_APICBASE_BASE)
#define vlapic_x2apic_mode(vlapic)                              \
    ((vlapic)->hw.apic_base_msr & MSR_IA32_APICBASE_EXTD)

struct vlapic {
    struct hvm_hw_lapic      hw;
    struct hvm_hw_lapic_regs *regs;
    struct periodic_time     pt;
    s_time_t                 timer_last_update;
    struct page_info         *regs_page;
    /* INIT-SIPI-SIPI work gets deferred to a tasklet. */
    struct {
        struct vcpu          *target;
        uint32_t             icr;
        struct tasklet       tasklet;
    } init_sipi;
};

static inline uint32_t vlapic_get_reg(struct vlapic *vlapic, uint32_t reg)
{
    return *((uint32_t *)(&vlapic->regs->data[reg]));
}

static inline void vlapic_set_reg(
    struct vlapic *vlapic, uint32_t reg, uint32_t val)
{
    *((uint32_t *)(&vlapic->regs->data[reg])) = val;
}

bool_t is_vlapic_lvtpc_enabled(struct vlapic *vlapic);

int vlapic_set_irq(struct vlapic *vlapic, uint8_t vec, uint8_t trig);

int vlapic_has_pending_irq(struct vcpu *v);
int vlapic_ack_pending_irq(struct vcpu *v, int vector);

int  vlapic_init(struct vcpu *v);
void vlapic_destroy(struct vcpu *v);

void vlapic_reset(struct vlapic *vlapic);

void vlapic_msr_set(struct vlapic *vlapic, uint64_t value);
void vlapic_tdt_msr_set(struct vlapic *vlapic, uint64_t value);
uint64_t vlapic_tdt_msr_get(struct vlapic *vlapic);

int vlapic_accept_pic_intr(struct vcpu *v);

void vlapic_adjust_i8259_target(struct domain *d);

void vlapic_EOI_set(struct vlapic *vlapic);
void vlapic_handle_EOI_induced_exit(struct vlapic *vlapic, int vector);

int vlapic_ipi(struct vlapic *vlapic, uint32_t icr_low, uint32_t icr_high);

int vlapic_apicv_write(struct vcpu *v, unsigned int offset);

struct vlapic *vlapic_lowest_prio(
    struct domain *d, struct vlapic *source,
    int short_hand, uint8_t dest, uint8_t dest_mode);

bool_t vlapic_match_dest(
    struct vlapic *target, struct vlapic *source,
    int short_hand, uint8_t dest, uint8_t dest_mode);

#endif /* __ASM_X86_HVM_VLAPIC_H__ */
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</pre></td>
<td class='lines'><pre><code><style>pre { line-height: 125%; margin: 0; }
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<span class="c1"># A little script I whipped up to make it easy to</span>
<span class="c1"># patch source trees and have sane error handling</span>
<span class="c1"># -Erik</span>
<span class="c1">#</span>
<span class="c1"># (c) 2002 Erik Andersen &lt;andersen@codepoet.org&gt;</span>

<span class="c1"># Set directories from arguments, or use defaults.</span>
<span class="nv">targetdir</span><span class="o">=</span><span class="si">${</span><span class="nv">1</span><span class="p">-.</span><span class="si">}</span>
<span class="nv">patchdir</span><span class="o">=</span><span class="si">${</span><span class="nv">2</span><span class="p">-../kernel-patches</span><span class="si">}</span>
<span class="nv">patchpattern</span><span class="o">=</span><span class="si">${</span><span class="nv">3</span><span class="p">-*</span><span class="si">}</span>

<span class="k">if</span> <span class="o">[</span> ! -d <span class="s2">&quot;</span><span class="si">${</span><span class="nv">targetdir</span><span class="si">}</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="p">;</span> <span class="k">then</span>
    <span class="nb">echo</span> <span class="s2">&quot;Aborting.  &#39;</span><span class="si">${</span><span class="nv">targetdir</span><span class="si">}</span><span class="s2">&#39; is not a directory.&quot;</span>
    <span class="nb">exit</span> <span class="m">1</span>
<span class="k">fi</span>
<span class="k">if</span> <span class="o">[</span> ! -d <span class="s2">&quot;</span><span class="si">${</span><span class="nv">patchdir</span><span class="si">}</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="p">;</span> <span class="k">then</span>
    <span class="nb">echo</span> <span class="s2">&quot;Aborting.  &#39;</span><span class="si">${</span><span class="nv">patchdir</span><span class="si">}</span><span class="s2">&#39; is not a directory.&quot;</span>
    <span class="nb">exit</span> <span class="m">1</span>
<span class="k">fi</span>
    
<span class="k">for</span> i in <span class="si">${</span><span class="nv">patchdir</span><span class="si">}</span>/<span class="si">${</span><span class="nv">patchpattern</span><span class="si">}</span> <span class="p">;</span> <span class="k">do</span> 
    <span class="k">case</span> <span class="s2">&quot;</span><span class="nv">$i</span><span class="s2">&quot;</span> in
	*.gz<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;gzip&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;gunzip -dc&quot;</span><span class="p">;</span> <span class="p">;;</span> 
	*.bz<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;bzip&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;bunzip -dc&quot;</span><span class="p">;</span> <span class="p">;;</span> 
	*.bz2<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;bzip2&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;bunzip2 -dc&quot;</span><span class="p">;</span> <span class="p">;;</span> 
	*.zip<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;zip&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;unzip -d&quot;</span><span class="p">;</span> <span class="p">;;</span> 
	*.Z<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;compress&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;uncompress -c&quot;</span><span class="p">;</span> <span class="p">;;</span> 
	*<span class="o">)</span>
	<span class="nv">type</span><span class="o">=</span><span class="s2">&quot;plaintext&quot;</span><span class="p">;</span> <span class="nv">uncomp</span><span class="o">=</span><span class="s2">&quot;cat&quot;</span><span class="p">;</span> <span class="p">;;</span> 
    <span class="k">esac</span>
    <span class="o">[</span> -d <span class="s2">&quot;</span><span class="si">${</span><span class="nv">i</span><span class="si">}</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> <span class="nb">echo</span> <span class="s2">&quot;Ignoring subdirectory </span><span class="si">${</span><span class="nv">i</span><span class="si">}</span><span class="s2">&quot;</span> <span class="o">&amp;&amp;</span> <span class="k">continue</span>	
    <span class="nb">echo</span> <span class="s2">&quot;&quot;</span>
    <span class="nb">echo</span> <span class="s2">&quot;Applying </span><span class="si">${</span><span class="nv">i</span><span class="si">}</span><span class="s2"> using </span><span class="si">${</span><span class="nv">type</span><span class="si">}</span><span class="s2">: &quot;</span> 
    <span class="si">${</span><span class="nv">uncomp</span><span class="si">}</span> <span class="si">${</span><span class="nv">i</span><span class="si">}</span> <span class="p">|</span> <span class="si">${</span><span class="nv">PATCH</span><span class="k">:-</span><span class="nv">patch</span><span class="si">}</span> -f -p1 -E -d <span class="si">${</span><span class="nv">targetdir</span><span class="si">}</span> 
    <span class="k">if</span> <span class="o">[</span> <span class="nv">$?</span> !<span class="o">=</span> <span class="m">0</span> <span class="o">]</span> <span class="p">;</span> <span class="k">then</span>
        <span class="nb">echo</span> <span class="s2">&quot;Patch failed!  Please fix </span><span class="nv">$i</span><span class="s2">!&quot;</span>
	<span class="nb">exit</span> <span class="m">1</span>
    <span class="k">fi</span>
<span class="k">done</span>

<span class="c1"># Check for rejects...</span>
<span class="k">if</span> <span class="o">[</span> <span class="s2">&quot;`find </span><span class="nv">$targetdir</span><span class="s2">/ &#39;(&#39; -name &#39;*.rej&#39; -o -name &#39;.*.rej&#39; &#39;)&#39; -print`&quot;</span> <span class="o">]</span> <span class="p">;</span> <span class="k">then</span>
    <span class="nb">echo</span> <span class="s2">&quot;Aborting.  Reject files found.&quot;</span>
    <span class="nb">exit</span> <span class="m">1</span>
<span class="k">fi</span>

<span class="c1"># Remove backup files</span>
find <span class="nv">$targetdir</span>/ <span class="s1">&#39;(&#39;</span> -name <span class="s1">&#39;*.orig&#39;</span> -o -name <span class="s1">&#39;.*.orig&#39;</span> <span class="s1">&#39;)&#39;</span> -exec rm -f <span class="o">{}</span> <span class="se">\;</span>
</pre></div>
</code></pre></td></tr></table>
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