# # Copyright (C) 2006-2011 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \ CROSS_COMPILE="$(KERNEL_CROSS)" \ ARCH="$(LINUX_KARCH)" \ KBUILD_HAVE_NLS=no \ CONFIG_SHELL="$(BASH)" \ $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') ifdef CONFIG_STRIP_KERNEL_EXPORTS KERNEL_MAKEOPTS += \ EXTRA_LDSFLAGS="-I$(KERNEL_BUILD_DIR) -include symtab.h" endif INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt ifneq (,$(KERNEL_CC)) KERNEL_MAKEOPTS += CC="$(KERNEL_CC)" endif export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include # defined in quilt.mk Kernel/Patch:=$(Kernel/Patch/Default) ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"") ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"") define Kernel/Prepare/Default bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS) $(Kernel/Patch) touch $(LINUX_DIR)/.quilt_used endef else ifeq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"") define Kernel/Prepare/Default git clone $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR) endef else define Kernel/Prepare/Default git clone --reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY) $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR) endef endif endif else define Kernel/Prepare/Default mkdir -p $(KERNEL_BUILD_DIR) if [ -d $(LINUX_DIR) ]; then \ rmdir $(LINUX_DIR); \ fi ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR) endef endif ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y) ifeq ($(strip $(CONFIG_EXTERNAL_CPIO)),"") define Kernel/SetInitramfs mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old grep -v -e INITRAMFS -e CONFIG_RD_ -e CONFIG_BLK_DEV_INITRD $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config echo 'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config echo "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),CONFIG_INITRAMFS_COMPRESSION_GZIP=y\nCONFIG_RD_GZIP=y,# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set\n# CONFIG_RD_GZIP is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),CONFIG_INITRAMFS_COMPRESSION_BZIP2=y\nCONFIG_RD_BZIP2=y,# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set\n# CONFIG_RD_BZIP2 is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),CONFIG_INITRAMFS_COMPRESSION_LZMA=y\nCONFIG_RD_LZMA=y,# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set\n# CONFIG_RD_LZMA is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),CONFIG_INITRAMFS_COMPRESSION_LZO=y\nCONFIG_RD_LZO=y,# CONFIG_INITRAMFS_COMPRESSION_LZO is not set\n# CONFIG_RD_LZO is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),CONFIG_INITRAMFS_COMPRESSION_XZ=y\nCONFIG_RD_XZ=y,# CONFIG_INITRAMFS_COMPRESSION_XZ is not set\n# CONFIG_RD_XZ is not set)" >> $(LINUX_DIR)/.config endef else define Kernel/SetInitramfs mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_SOURCE="$(call qstrip,$(CONFIG_EXTERNAL_CPIO))"' >> $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config echo "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),CONFIG_INITRAMFS_COMPRESSION_GZIP=y\nCONFIG_RD_GZIP=y,# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set\n# CONFIG_RD_GZIP is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),CONFIG_INITRAMFS_COMPRESSION_BZIP2=y\nCONFIG_RD_BZIP2=y,# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set\n# CONFIG_RD_BZIP2 is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),CONFIG_INITRAMFS_COMPRESSION_LZMA=y\nCONFIG_RD_LZMA=y,# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set\n# CONFIG_RD_LZMA is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),CONFIG_INITRAMFS_COMPRESSION_LZO=y\nCONFIG_RD_LZO=y,# CONFIG_INITRAMFS_COMPRESSION_LZO is not set\n# CONFIG_RD_LZO is not set)" >> $(LINUX_DIR)/.config echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),CONFIG_INITRAMFS_COMPRESSION_XZ=y\nCONFIG_RD_XZ=y,# CONFIG_INITRAMFS_COMPRESSION_XZ is not set\n# CONFIG_RD_XZ is not set)" >> $(LINUX_DIR)/.config endef endif else define Kernel/SetInitramfs mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config endef endif define Kernel/Configure/Default $(LINUX_CONF_CMD) > $(LINUX_DIR)/.config.target # copy CONFIG_KERNEL_* settings over to .config.target awk '/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR)/.config >> $(LINUX_DIR)/.config.target echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override $(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config $(call Kernel/SetInitramfs) rm -rf $(KERNEL_BUILD_DIR)/modules [ -d $(LINUX_DIR)/user_headers ] || $(MAKE) $(KERNEL_MAKEOPTS) INSTALL_HDR_PATH=$(LINUX_DIR)/user_headers headers_install $(SH_FUNC) grep '=[ym]' $(LINUX_DIR)/.config | LC_ALL=C sort | md5s > $(LINUX_DIR)/.vermagic endef define Kernel/CompileModules/Default rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map +$(MAKE) $(KERNEL_MAKEOPTS) modules endef OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id define Kernel/CompileImage/Default $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init) +$(MAKE) $(KERNEL_MAKEOPTS) $(subst ",,$(KERNELNAME)) $(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL) $(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf endef define Kernel/Clean/Default rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured rm -f $(LINUX_KERNEL) $(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean endef >109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 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/* -*-  Mode:C; c-basic-offset:4; tab-width:4; indent-tabs-mode:nil -*- */
/*
 * vmmu.c: virtual memory management unit components.
 * Copyright (c) 2005, Intel Corporation.
 *
 * 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.
 *
 *  Xuefei Xu (Anthony Xu) (Anthony.xu@intel.com)
 *  Yaozu Dong (Eddie Dong) (Eddie.dong@intel.com)
 */
#include <asm/vmx_vcpu.h>
#include <asm/vmx_pal_vsa.h>
#include <xen/sched-if.h>
#include <asm/vhpt.h>

static int default_vtlb_sz = DEFAULT_VTLB_SZ;
static int default_vhpt_sz = DEFAULT_VHPT_SZ;

static void __init parse_vtlb_size(char *s)
{
    int sz = parse_size_and_unit(s, NULL);

    if (sz > 0) {
        default_vtlb_sz = fls(sz - 1);
        /* minimum 16KB (for tag uniqueness) */
        if (default_vtlb_sz < 14)
            default_vtlb_sz = 14;
    }
}

static void __init parse_vhpt_size(char *s)
{
    int sz = parse_size_and_unit(s, NULL);
    if (sz > 0) {
        default_vhpt_sz = fls(sz - 1);
        default_vhpt_sz = canonicalize_vhpt_size(default_vhpt_sz);
    }
}

custom_param("vti_vtlb_size", parse_vtlb_size);
custom_param("vti_vhpt_size", parse_vhpt_size);


static int init_domain_vhpt(struct vcpu *v)
{
    int rc;
    u64 size = v->domain->arch.hvm_domain.params[HVM_PARAM_VHPT_SIZE];

    if (size == 0)
        size = default_vhpt_sz;
    else
        size = canonicalize_vhpt_size(size);

    rc = thash_alloc(&(v->arch.vhpt), size, "vhpt");
    v->arch.arch_vmx.mpta = v->arch.vhpt.pta.val;
    return rc;
}


static void free_domain_vhpt(struct vcpu *v)
{
    if (v->arch.vhpt.hash)
        thash_free(&(v->arch.vhpt));
}

int init_domain_tlb(struct vcpu *v)
{
    int rc;

    rc = init_domain_vhpt(v);
    if (rc)
        return rc;

    rc = thash_alloc(&(v->arch.vtlb), default_vtlb_sz, "vtlb");
    if (rc) {
        free_domain_vhpt(v);
        return rc;
    }
    
    return 0;
}


void free_domain_tlb(struct vcpu *v)
{
    if (v->arch.vtlb.hash)
        thash_free(&(v->arch.vtlb));

    free_domain_vhpt(v);
}


int vhpt_enabled(VCPU *vcpu, uint64_t vadr, vhpt_ref_t ref)
{
    ia64_rr  vrr;
    PTA   vpta;
    IA64_PSR  vpsr; 

    vpsr.val = VCPU(vcpu, vpsr);
    vcpu_get_rr(vcpu, vadr, &vrr.rrval);
    vpta.val = vmx_vcpu_get_pta(vcpu);

    if ( vrr.ve & vpta.ve ) {
        switch ( ref ) {
        case DATA_REF:
        case NA_REF:
            return vpsr.dt;
        case INST_REF:
            return vpsr.dt && vpsr.it && vpsr.ic;
        case RSE_REF:
            return vpsr.dt && vpsr.rt;

        }
    }
    return 0;
}


int unimplemented_gva(VCPU *vcpu,u64 vadr)
{
#if 0
    int bit=vcpu->domain->arch.imp_va_msb;
    u64 ladr =(vadr<<3)>>(3+bit);
    if(!ladr||ladr==(1U<<(61-bit))-1){
        return 0;
    }else{
        return 1;
    }
#else
    return 0;
#endif
}


/*
 * Fetch guest bundle code.
 * INPUT:
 *  gip: guest ip
 *  pbundle: used to return fetched bundle.
 */
unsigned long
fetch_code(VCPU *vcpu, u64 gip, IA64_BUNDLE *pbundle)
{
    u64     gpip=0;   // guest physical IP
    u64     *vpa;
    thash_data_t    *tlb;
    u64     mfn, maddr;
    struct page_info* page;

 again:
    if ( !(VCPU(vcpu, vpsr) & IA64_PSR_IT) ) {   // I-side physical mode
        gpip = pa_clear_uc(gip);	// clear UC bit
    }
    else {
        tlb = vtlb_lookup(vcpu, gip, ISIDE_TLB);
//        if( tlb == NULL )
//             tlb = vtlb_lookup(vcpu, gip, DSIDE_TLB );
        if (tlb)
            gpip = thash_translate(tlb, gip);
    }
    if( gpip){
        mfn = gmfn_to_mfn(vcpu->domain, gpip >>PAGE_SHIFT);
        if (mfn == INVALID_MFN)
            panic_domain(vcpu_regs(vcpu), "fetch_code: invalid memory\n");
        maddr = (mfn << PAGE_SHIFT) | (gpip & (PAGE_SIZE - 1));
    }else{
        tlb = vhpt_lookup(gip);
        if (tlb == NULL) {
            ia64_ptcl(gip, ARCH_PAGE_SHIFT << 2);
            return IA64_RETRY;
        }
        maddr = thash_translate(tlb, gip);
        mfn = maddr >> PAGE_SHIFT;
    }

    page = mfn_to_page(mfn);
    if (get_page(page, vcpu->domain) == 0) {
        if (page_get_owner(page) != vcpu->domain) {
            // This page might be a page granted by another domain.
            panic_domain(NULL, "domain tries to execute foreign domain "
                         "page which might be mapped by grant table.\n");
        }
        goto again;
    }
    vpa = (u64 *)__va(maddr);

    pbundle->i64[0] = *vpa++;
    pbundle->i64[1] = *vpa;
    put_page(page);
    return IA64_NO_FAULT;
}

IA64FAULT vmx_vcpu_itc_i(VCPU *vcpu, u64 pte, u64 itir, u64 ifa)
{
#ifdef VTLB_DEBUG
    int slot;
    u64 ps, va;
    ps = itir_ps(itir);
    va = PAGEALIGN(ifa, ps);
    slot = vtr_find_overlap(vcpu, va, ps, ISIDE_TLB);
    if (slot >=0) {
        // generate MCA.
        panic_domain(vcpu_regs(vcpu),"Tlb conflict!!");
        return IA64_FAULT;
    }
#endif //VTLB_DEBUG    
    pte &= ~PAGE_FLAGS_RV_MASK;
    thash_purge_and_insert(vcpu, pte, itir, ifa, ISIDE_TLB);
    return IA64_NO_FAULT;
}

IA64FAULT vmx_vcpu_itc_d(VCPU *vcpu, u64 pte, u64 itir, u64 ifa)
{
#ifdef VTLB_DEBUG    
    int slot;
    u64 ps, va;
    ps = itir_ps(itir);
    va = PAGEALIGN(ifa, ps);
    slot = vtr_find_overlap(vcpu, va, ps, DSIDE_TLB);
    if (slot >=0) {
        // generate MCA.
        panic_domain(vcpu_regs(vcpu),"Tlb conflict!!");
        return IA64_FAULT;
    }
#endif //VTLB_DEBUG
    pte &= ~PAGE_FLAGS_RV_MASK;
    thash_purge_and_insert(vcpu, pte, itir, ifa, DSIDE_TLB);
    return IA64_NO_FAULT;

}




IA64FAULT vmx_vcpu_itr_i(VCPU *vcpu, u64 slot, u64 pte, u64 itir, u64 ifa)
{
#ifdef VTLB_DEBUG
    int index;
#endif    
    u64 ps, va, rid;
    thash_data_t * p_itr;
    ps = itir_ps(itir);
    va = PAGEALIGN(ifa, ps);
#ifdef VTLB_DEBUG    
    index = vtr_find_overlap(vcpu, va, ps, ISIDE_TLB);
    if (index >=0) {
        // generate MCA.
        panic_domain(vcpu_regs(vcpu),"Tlb conflict!!");
        return IA64_FAULT;
    }
    thash_purge_entries(vcpu, va, ps);
#endif

    if (slot >= NITRS) {
        panic_domain(NULL, "bad itr.i slot (%ld)", slot);
        return IA64_FAULT;
    }
        
    pte &= ~PAGE_FLAGS_RV_MASK;
    vcpu_get_rr(vcpu, va, &rid);
    rid = rid& RR_RID_MASK;
    p_itr = (thash_data_t *)&vcpu->arch.itrs[slot];
    vmx_vcpu_set_tr(p_itr, pte, itir, va, rid);
    vcpu_quick_region_set(PSCBX(vcpu,itr_regions),va);
    return IA64_NO_FAULT;
}


IA64FAULT vmx_vcpu_itr_d(VCPU *vcpu, u64 slot, u64 pte, u64 itir, u64 ifa)
{
#ifdef VTLB_DEBUG
    int index;
#endif    
    u64 gpfn;
    u64 ps, va, rid;
    thash_data_t * p_dtr;

    ps = itir_ps(itir);
    va = PAGEALIGN(ifa, ps);
#ifdef VTLB_DEBUG    
    index = vtr_find_overlap(vcpu, va, ps, DSIDE_TLB);
    if (index>=0) {
        // generate MCA.
        panic_domain(vcpu_regs(vcpu),"Tlb conflict!!");
        return IA64_FAULT;
    }
#endif   

    if (slot >= NDTRS) {
        panic_domain(NULL, "bad itr.d slot (%ld)", slot);
        return IA64_FAULT;
    }

    pte &= ~PAGE_FLAGS_RV_MASK;

    /* This is a bad workaround
       In Linux, region 7 use 16M pagesize and is identity mapped.
       VHPT page size is 16K in XEN.  If purge VHPT while guest insert 16M,
       it will iteratively purge VHPT 1024 times, which makes XEN/IPF very
       slow.  XEN doesn't purge VHPT
    */   
    if (ps != _PAGE_SIZE_16M)
        thash_purge_entries(vcpu, va, ps);
    gpfn = pte_pfn(__pte(pte));
    vcpu_get_rr(vcpu, va, &rid);
    rid &= RR_RID_MASK;
    p_dtr = (thash_data_t *)&vcpu->arch.dtrs[slot];
    vmx_vcpu_set_tr((thash_data_t *)&vcpu->arch.dtrs[slot], pte, itir, va, rid);
    vcpu_quick_region_set(PSCBX(vcpu,dtr_regions),va);
    return IA64_NO_FAULT;
}



IA64FAULT vmx_vcpu_ptr_d(VCPU *vcpu,u64 ifa, u64 ps)
{
    int index;
    u64 va;

    va = PAGEALIGN(ifa, ps);
    while ((index = vtr_find_overlap(vcpu, va, ps, DSIDE_TLB)) >= 0) {
        vcpu->arch.dtrs[index].pte.p=0;
    }
    thash_purge_entries(vcpu, va, ps);
    return IA64_NO_FAULT;
}

IA64FAULT vmx_vcpu_ptr_i(VCPU *vcpu, u64 ifa, u64 ps)
{
    int index;
    u64 va;

    va = PAGEALIGN(ifa, ps);
    while ((index = vtr_find_overlap(vcpu, va, ps, ISIDE_TLB)) >= 0) {
        vcpu->arch.itrs[index].pte.p=0;
    }
    thash_purge_entries(vcpu, va, ps);
    return IA64_NO_FAULT;
}

IA64FAULT vmx_vcpu_ptc_l(VCPU *vcpu, u64 va, u64 ps)
{
    va = PAGEALIGN(va, ps);
    thash_purge_entries(vcpu, va, ps);
    return IA64_NO_FAULT;
}


IA64FAULT vmx_vcpu_ptc_e(VCPU *vcpu, u64 va)
{
    thash_purge_all(vcpu);
    return IA64_NO_FAULT;
}

IA64FAULT vmx_vcpu_ptc_g(VCPU *vcpu, u64 va, u64 ps)
{
    return vmx_vcpu_ptc_ga(vcpu, va, ps);
}
/*
IA64FAULT vmx_vcpu_ptc_ga(VCPU *vcpu, u64 va, u64 ps)
{
    vmx_vcpu_ptc_l(vcpu, va, ps);
    return IA64_NO_FAULT;
}
 */
struct ptc_ga_args {
    unsigned long vadr;
    unsigned long rid;
    unsigned long ps;
    struct vcpu *vcpu;
};

static void ptc_ga_remote_func (void *varg)
{
    u64 oldrid, moldrid, mpta, oldpsbits, vadr, flags;
    struct ptc_ga_args *args = (struct ptc_ga_args *)varg;
    VCPU *v = args->vcpu;
    int cpu = v->processor;

    vadr = args->vadr;

    /* Try again if VCPU has migrated. */
    if (cpu != current->processor)
        return;
    local_irq_save(flags);
    if (!spin_trylock(&per_cpu(schedule_data, cpu).schedule_lock))
        goto bail2;
    if (v->processor != cpu)
        goto bail1;
    oldrid = VMX(v, vrr[0]);
    VMX(v, vrr[0]) = args->rid;
    oldpsbits = VMX(v, psbits[0]);
    VMX(v, psbits[0]) = VMX(v, psbits[REGION_NUMBER(vadr)]);
    moldrid = ia64_get_rr(0x0);
    ia64_set_rr(0x0,vrrtomrr(v,args->rid));
    mpta = ia64_get_pta();
    ia64_set_pta(v->arch.arch_vmx.mpta&(~1));
    ia64_srlz_d();
    vadr = PAGEALIGN(vadr, args->ps);
    thash_purge_entries_remote(v, vadr, args->ps);
    VMX(v, vrr[0]) = oldrid; 
    VMX(v, psbits[0]) = oldpsbits;
    ia64_set_rr(0x0,moldrid);
    ia64_set_pta(mpta);
    ia64_dv_serialize_data();
    args->vcpu = NULL;
bail1:
    spin_unlock(&per_cpu(schedule_data, cpu).schedule_lock);
bail2:
    local_irq_restore(flags);
}


IA64FAULT vmx_vcpu_ptc_ga(VCPU *vcpu, u64 va, u64 ps)
{

    struct domain *d = vcpu->domain;
    struct vcpu *v;
    struct ptc_ga_args args;
    int cpu;

    args.vadr = va;
    vcpu_get_rr(vcpu, va, &args.rid);
    args.ps = ps;
    for_each_vcpu (d, v) {
        if (!v->is_initialised)
            continue;

        if (v == vcpu) {
            vmx_vcpu_ptc_l(v, va, ps);
            continue;
        }

        args.vcpu = v;
        do {
            cpu = v->processor;
            if (cpu != current->processor) {
                spin_barrier(&per_cpu(schedule_data, cpu).schedule_lock);
                /* Flush VHPT on remote processors. */
                smp_call_function_single(cpu, &ptc_ga_remote_func, &args, 1);
            } else {
                ptc_ga_remote_func(&args);
            }
        } while (args.vcpu != NULL);
    }
    return IA64_NO_FAULT;
}


u64 vmx_vcpu_thash(VCPU *vcpu, u64 vadr)
{
    PTA vpta;
    ia64_rr vrr;
    u64 pval;
    u64 vhpt_offset;
    u64 mask;

    vpta.val = vmx_vcpu_get_pta(vcpu);
    vcpu_get_rr(vcpu, vadr, &vrr.rrval);
    mask = (1UL << vpta.size) - 1;
    if (vpta.vf) {
        vadr = (vadr & 0x1fffffffffffffffUL) >> vrr.ps;
        vhpt_offset = vadr ^ vrr.rid;
        pval = (vpta.val & ~0x7fffUL) + ((vhpt_offset << 5) & mask);