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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v5 7/7] libxl: Introduce libxl__arch_domain_create
On Thu, 2012-02-23 at 14:51 +0000, Stefano Stabellini wrote:
> Introduce an arch specific internal domain creation function. At the
> moment only x86 provides an implementation.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
(I thought I acked this last time)
> ---
> tools/libxl/Makefile | 6 +-
> tools/libxl/libxl_arch.h | 22 ++++
> tools/libxl/libxl_create.c | 12 +--
> tools/libxl/libxl_internal.h | 2 -
> tools/libxl/libxl_noarch.c | 8 ++
> tools/libxl/libxl_pci.c | 242 ---------------------------------------
> tools/libxl/libxl_x86.c | 259
> ++++++++++++++++++++++++++++++++++++++++++
> 7 files changed, 294 insertions(+), 257 deletions(-)
> create mode 100644 tools/libxl/libxl_arch.h
> create mode 100644 tools/libxl/libxl_noarch.c
> create mode 100644 tools/libxl/libxl_x86.c
>
> diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
> index 41b6ac4..ba5852b 100644
> --- a/tools/libxl/Makefile
> +++ b/tools/libxl/Makefile
> @@ -34,9 +34,9 @@ LIBXL_OBJS-y += libxl_blktap2.o
> else
> LIBXL_OBJS-y += libxl_noblktap2.o
> endif
> -LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o
> -LIBXL_OBJS-$(CONFIG_IA64) += libxl_nocpuid.o
> -LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o
> +LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o libxl_x86.o
> +LIBXL_OBJS-$(CONFIG_IA64) += libxl_nocpuid.o libxl_noarch.o
> +LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o libxl_noarch.o
>
> ifeq ($(CONFIG_NetBSD),y)
> LIBXL_OBJS-y += libxl_netbsd.o
> diff --git a/tools/libxl/libxl_arch.h b/tools/libxl/libxl_arch.h
> new file mode 100644
> index 0000000..d1bbdf7
> --- /dev/null
> +++ b/tools/libxl/libxl_arch.h
> @@ -0,0 +1,22 @@
> +/*
> + * Copyright (C) 2012 Citrix Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU Lesser General Public License as published
> + * by the Free Software Foundation; version 2.1 only. with the special
> + * exception on linking described in file LICENSE.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU Lesser General Public License for more details.
> + */
> +
> +#ifndef LIBXL_ARCH_H
> +#define LIBXL_ARCH_H
> +
> +/* arch specific internal domain creation function */
> +int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
> + uint32_t domid);
> +
> +#endif
> diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
> index f28d814..ff589a8 100644
> --- a/tools/libxl/libxl_create.c
> +++ b/tools/libxl/libxl_create.c
> @@ -18,6 +18,7 @@
> #include "libxl_osdeps.h" /* must come before any other headers */
>
> #include "libxl_internal.h"
> +#include "libxl_arch.h"
>
> #include <xc_dom.h>
> #include <xenguest.h>
> @@ -616,16 +617,7 @@ static int do_domain_create(libxl__gc *gc,
> libxl_domain_config *d_config,
> goto error_out;
> }
> }
> -
> - if (d_config->c_info.type == LIBXL_DOMAIN_TYPE_PV &&
> - d_config->b_info.u.pv.e820_host) {
> - int rc;
> - rc = libxl__e820_alloc(gc, domid, d_config);
> - if (rc)
> - LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
> - "Failed while collecting E820 with: %d (errno:%d)\n",
> - rc, errno);
> - }
> + libxl__arch_domain_create(gc, d_config, domid);
> if ( cb && (d_config->c_info.type == LIBXL_DOMAIN_TYPE_HVM ||
> (d_config->c_info.type == LIBXL_DOMAIN_TYPE_PV &&
> d_config->b_info.u.pv.bootloader ))) {
> diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
> index 8846c68..bd384e2 100644
> --- a/tools/libxl/libxl_internal.h
> +++ b/tools/libxl/libxl_internal.h
> @@ -975,8 +975,6 @@ _hidden int libxl__error_set(libxl__gc *gc, int code);
> _hidden int libxl__file_reference_map(libxl_file_reference *f);
> _hidden int libxl__file_reference_unmap(libxl_file_reference *f);
>
> -_hidden int libxl__e820_alloc(libxl__gc *gc, uint32_t domid,
> libxl_domain_config *d_config);
> -
> /* parse the string @s as a sequence of 6 colon separated bytes in to @mac */
> _hidden int libxl__parse_mac(const char *s, libxl_mac mac);
> /* compare mac address @a and @b. 0 if the same, -ve if a<b and +ve if a>b */
> diff --git a/tools/libxl/libxl_noarch.c b/tools/libxl/libxl_noarch.c
> new file mode 100644
> index 0000000..7893535
> --- /dev/null
> +++ b/tools/libxl/libxl_noarch.c
> @@ -0,0 +1,8 @@
> +#include "libxl_internal.h"
> +#include "libxl_arch.h"
> +
> +int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
> + uint32_t domid)
> +{
> + return 0;
> +}
> diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
> index 33425f5..d960f4b 100644
> --- a/tools/libxl/libxl_pci.c
> +++ b/tools/libxl/libxl_pci.c
> @@ -1147,248 +1147,6 @@ int libxl__device_pci_destroy_all(libxl__gc *gc,
> uint32_t domid)
> return 0;
> }
>
> -static const char *e820_names(int type)
> -{
> - switch (type) {
> - case E820_RAM: return "RAM";
> - case E820_RESERVED: return "Reserved";
> - case E820_ACPI: return "ACPI";
> - case E820_NVS: return "ACPI NVS";
> - case E820_UNUSABLE: return "Unusable";
> - default: break;
> - }
> - return "Unknown";
> -}
> -
> -static int e820_sanitize(libxl_ctx *ctx, struct e820entry src[],
> - uint32_t *nr_entries,
> - unsigned long map_limitkb,
> - unsigned long balloon_kb)
> -{
> - uint64_t delta_kb = 0, start = 0, start_kb = 0, last = 0, ram_end;
> - uint32_t i, idx = 0, nr;
> - struct e820entry e820[E820MAX];
> -
> - if (!src || !map_limitkb || !balloon_kb || !nr_entries)
> - return ERROR_INVAL;
> -
> - nr = *nr_entries;
> - if (!nr)
> - return ERROR_INVAL;
> -
> - if (nr > E820MAX)
> - return ERROR_NOMEM;
> -
> - /* Weed out anything under 1MB */
> - for (i = 0; i < nr; i++) {
> - if (src[i].addr > 0x100000)
> - continue;
> -
> - src[i].type = 0;
> - src[i].size = 0;
> - src[i].addr = -1ULL;
> - }
> -
> - /* Find the lowest and highest entry in E820, skipping over
> - * undesired entries. */
> - start = -1ULL;
> - last = 0;
> - for (i = 0; i < nr; i++) {
> - if ((src[i].type == E820_RAM) ||
> - (src[i].type == E820_UNUSABLE) ||
> - (src[i].type == 0))
> - continue;
> -
> - start = src[i].addr < start ? src[i].addr : start;
> - last = src[i].addr + src[i].size > last ?
> - src[i].addr + src[i].size > last : last;
> - }
> - if (start > 1024)
> - start_kb = start >> 10;
> -
> - /* Add the memory RAM region for the guest */
> - e820[idx].addr = 0;
> - e820[idx].size = (uint64_t)map_limitkb << 10;
> - e820[idx].type = E820_RAM;
> -
> - /* .. and trim if neccessary */
> - if (start_kb && map_limitkb > start_kb) {
> - delta_kb = map_limitkb - start_kb;
> - if (delta_kb)
> - e820[idx].size -= (uint64_t)(delta_kb << 10);
> - }
> - /* Note: We don't touch balloon_kb here. Will add it at the end. */
> - ram_end = e820[idx].addr + e820[idx].size;
> - idx ++;
> -
> - LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Memory: %"PRIu64"kB End of RAM: " \
> - "0x%"PRIx64" (PFN) Delta: %"PRIu64"kB, PCI start: %"PRIu64"kB
> " \
> - "(0x%"PRIx64" PFN), Balloon %"PRIu64"kB\n",
> (uint64_t)map_limitkb,
> - ram_end >> 12, delta_kb, start_kb ,start >> 12,
> - (uint64_t)balloon_kb);
> -
> -
> - /* This whole code below is to guard against if the Intel IGD is passed
> into
> - * the guest. If we don't pass in IGD, this whole code can be ignored.
> - *
> - * The reason for this code is that Intel boxes fill their E820 with
> - * E820_RAM amongst E820_RESERVED and we can't just ditch those E820_RAM.
> - * That is b/c any "gaps" in the E820 is considered PCI I/O space by
> - * Linux and it would be utilized by the Intel IGD as I/O space while
> - * in reality it was an RAM region.
> - *
> - * What this means is that we have to walk the E820 and for any region
> - * that is RAM and below 4GB and above ram_end, needs to change its type
> - * to E820_UNUSED. We also need to move some of the E820_RAM regions if
> - * the overlap with ram_end. */
> - for (i = 0; i < nr; i++) {
> - uint64_t end = src[i].addr + src[i].size;
> -
> - /* We don't care about E820_UNUSABLE, but we need to
> - * change the type to zero b/c the loop after this
> - * sticks E820_UNUSABLE on the guest's E820 but ignores
> - * the ones with type zero. */
> - if ((src[i].type == E820_UNUSABLE) ||
> - /* Any region that is within the "RAM region" can
> - * be safely ditched. */
> - (end < ram_end)) {
> - src[i].type = 0;
> - continue;
> - }
> -
> - /* Look only at RAM regions. */
> - if (src[i].type != E820_RAM)
> - continue;
> -
> - /* We only care about RAM regions below 4GB. */
> - if (src[i].addr >= (1ULL<<32))
> - continue;
> -
> - /* E820_RAM overlaps with our RAM region. Move it */
> - if (src[i].addr < ram_end) {
> - uint64_t delta;
> -
> - src[i].type = E820_UNUSABLE;
> - delta = ram_end - src[i].addr;
> - /* The end < ram_end should weed this out */
> - if (src[i].size - delta < 0)
> - src[i].type = 0;
> - else {
> - src[i].size -= delta;
> - src[i].addr = ram_end;
> - }
> - if (src[i].addr + src[i].size != end) {
> - /* We messed up somewhere */
> - src[i].type = 0;
> - LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Computed E820
> wrongly. Continuing on.");
> - }
> - }
> - /* Lastly, convert the RAM to UNSUABLE. Look in the Linux kernel
> - at git commit 2f14ddc3a7146ea4cd5a3d1ecd993f85f2e4f948
> - "xen/setup: Inhibit resource API from using System RAM E820
> - gaps as PCI mem gaps" for full explanation. */
> - if (end > ram_end)
> - src[i].type = E820_UNUSABLE;
> - }
> -
> - /* Check if there is a region between ram_end and start. */
> - if (start > ram_end) {
> - int add_unusable = 1;
> - for (i = 0; i < nr && add_unusable; i++) {
> - if (src[i].type != E820_UNUSABLE)
> - continue;
> - if (ram_end != src[i].addr)
> - continue;
> - if (start != src[i].addr + src[i].size) {
> - /* there is one, adjust it */
> - src[i].size = start - src[i].addr;
> - }
> - add_unusable = 0;
> - }
> - /* .. and if not present, add it in. This is to guard against
> - the Linux guest assuming that the gap between the end of
> - RAM region and the start of the E820_[ACPI,NVS,RESERVED]
> - is PCI I/O space. Which it certainly is _not_. */
> - if (add_unusable) {
> - e820[idx].type = E820_UNUSABLE;
> - e820[idx].addr = ram_end;
> - e820[idx].size = start - ram_end;
> - idx++;
> - }
> - }
> - /* Almost done: copy them over, ignoring the undesireable ones */
> - for (i = 0; i < nr; i++) {
> - if ((src[i].type == E820_RAM) ||
> - (src[i].type == 0))
> - continue;
> -
> - e820[idx].type = src[i].type;
> - e820[idx].addr = src[i].addr;
> - e820[idx].size = src[i].size;
> - idx++;
> - }
> - /* At this point we have the mapped RAM + E820 entries from src. */
> - if (balloon_kb) {
> - /* and if we truncated the RAM region, then add it to the end. */
> - e820[idx].type = E820_RAM;
> - e820[idx].addr = (uint64_t)(1ULL << 32) > last ?
> - (uint64_t)(1ULL << 32) : last;
> - /* also add the balloon memory to the end. */
> - e820[idx].size = (uint64_t)(delta_kb << 10) +
> - (uint64_t)(balloon_kb << 10);
> - idx++;
> -
> - }
> - nr = idx;
> -
> - for (i = 0; i < nr; i++) {
> - LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, ":\t[%"PRIx64" -> %"PRIx64"] %s",
> - e820[i].addr >> 12, (e820[i].addr + e820[i].size) >> 12,
> - e820_names(e820[i].type));
> - }
> -
> - /* Done: copy the sanitized version. */
> - *nr_entries = nr;
> - memcpy(src, e820, nr * sizeof(struct e820entry));
> - return 0;
> -}
> -
> -int libxl__e820_alloc(libxl__gc *gc, uint32_t domid, libxl_domain_config
> *d_config)
> -{
> - libxl_ctx *ctx = libxl__gc_owner(gc);
> - int rc;
> - uint32_t nr;
> - struct e820entry map[E820MAX];
> - libxl_domain_build_info *b_info;
> -
> - if (d_config == NULL || d_config->c_info.type == LIBXL_DOMAIN_TYPE_HVM)
> - return ERROR_INVAL;
> -
> - b_info = &d_config->b_info;
> - if (!b_info->u.pv.e820_host)
> - return ERROR_INVAL;
> -
> - rc = xc_get_machine_memory_map(ctx->xch, map, E820MAX);
> - if (rc < 0) {
> - errno = rc;
> - return ERROR_FAIL;
> - }
> - nr = rc;
> - rc = e820_sanitize(ctx, map, &nr, b_info->target_memkb,
> - (b_info->max_memkb - b_info->target_memkb) +
> - b_info->u.pv.slack_memkb);
> - if (rc)
> - return ERROR_FAIL;
> -
> - rc = xc_domain_set_memory_map(ctx->xch, domid, map, nr);
> -
> - if (rc < 0) {
> - errno = rc;
> - return ERROR_FAIL;
> - }
> - return 0;
> -}
> -
> /*
> * Local variables:
> * mode: C
> diff --git a/tools/libxl/libxl_x86.c b/tools/libxl/libxl_x86.c
> new file mode 100644
> index 0000000..7e11f2d
> --- /dev/null
> +++ b/tools/libxl/libxl_x86.c
> @@ -0,0 +1,259 @@
> +#include "libxl_internal.h"
> +#include "libxl_arch.h"
> +
> +static const char *e820_names(int type)
> +{
> + switch (type) {
> + case E820_RAM: return "RAM";
> + case E820_RESERVED: return "Reserved";
> + case E820_ACPI: return "ACPI";
> + case E820_NVS: return "ACPI NVS";
> + case E820_UNUSABLE: return "Unusable";
> + default: break;
> + }
> + return "Unknown";
> +}
> +
> +static int e820_sanitize(libxl_ctx *ctx, struct e820entry src[],
> + uint32_t *nr_entries,
> + unsigned long map_limitkb,
> + unsigned long balloon_kb)
> +{
> + uint64_t delta_kb = 0, start = 0, start_kb = 0, last = 0, ram_end;
> + uint32_t i, idx = 0, nr;
> + struct e820entry e820[E820MAX];
> +
> + if (!src || !map_limitkb || !balloon_kb || !nr_entries)
> + return ERROR_INVAL;
> +
> + nr = *nr_entries;
> + if (!nr)
> + return ERROR_INVAL;
> +
> + if (nr > E820MAX)
> + return ERROR_NOMEM;
> +
> + /* Weed out anything under 1MB */
> + for (i = 0; i < nr; i++) {
> + if (src[i].addr > 0x100000)
> + continue;
> +
> + src[i].type = 0;
> + src[i].size = 0;
> + src[i].addr = -1ULL;
> + }
> +
> + /* Find the lowest and highest entry in E820, skipping over
> + * undesired entries. */
> + start = -1ULL;
> + last = 0;
> + for (i = 0; i < nr; i++) {
> + if ((src[i].type == E820_RAM) ||
> + (src[i].type == E820_UNUSABLE) ||
> + (src[i].type == 0))
> + continue;
> +
> + start = src[i].addr < start ? src[i].addr : start;
> + last = src[i].addr + src[i].size > last ?
> + src[i].addr + src[i].size > last : last;
> + }
> + if (start > 1024)
> + start_kb = start >> 10;
> +
> + /* Add the memory RAM region for the guest */
> + e820[idx].addr = 0;
> + e820[idx].size = (uint64_t)map_limitkb << 10;
> + e820[idx].type = E820_RAM;
> +
> + /* .. and trim if neccessary */
> + if (start_kb && map_limitkb > start_kb) {
> + delta_kb = map_limitkb - start_kb;
> + if (delta_kb)
> + e820[idx].size -= (uint64_t)(delta_kb << 10);
> + }
> + /* Note: We don't touch balloon_kb here. Will add it at the end. */
> + ram_end = e820[idx].addr + e820[idx].size;
> + idx ++;
> +
> + LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Memory: %"PRIu64"kB End of RAM: " \
> + "0x%"PRIx64" (PFN) Delta: %"PRIu64"kB, PCI start: %"PRIu64"kB
> " \
> + "(0x%"PRIx64" PFN), Balloon %"PRIu64"kB\n",
> (uint64_t)map_limitkb,
> + ram_end >> 12, delta_kb, start_kb ,start >> 12,
> + (uint64_t)balloon_kb);
> +
> +
> + /* This whole code below is to guard against if the Intel IGD is passed
> into
> + * the guest. If we don't pass in IGD, this whole code can be ignored.
> + *
> + * The reason for this code is that Intel boxes fill their E820 with
> + * E820_RAM amongst E820_RESERVED and we can't just ditch those E820_RAM.
> + * That is b/c any "gaps" in the E820 is considered PCI I/O space by
> + * Linux and it would be utilized by the Intel IGD as I/O space while
> + * in reality it was an RAM region.
> + *
> + * What this means is that we have to walk the E820 and for any region
> + * that is RAM and below 4GB and above ram_end, needs to change its type
> + * to E820_UNUSED. We also need to move some of the E820_RAM regions if
> + * the overlap with ram_end. */
> + for (i = 0; i < nr; i++) {
> + uint64_t end = src[i].addr + src[i].size;
> +
> + /* We don't care about E820_UNUSABLE, but we need to
> + * change the type to zero b/c the loop after this
> + * sticks E820_UNUSABLE on the guest's E820 but ignores
> + * the ones with type zero. */
> + if ((src[i].type == E820_UNUSABLE) ||
> + /* Any region that is within the "RAM region" can
> + * be safely ditched. */
> + (end < ram_end)) {
> + src[i].type = 0;
> + continue;
> + }
> +
> + /* Look only at RAM regions. */
> + if (src[i].type != E820_RAM)
> + continue;
> +
> + /* We only care about RAM regions below 4GB. */
> + if (src[i].addr >= (1ULL<<32))
> + continue;
> +
> + /* E820_RAM overlaps with our RAM region. Move it */
> + if (src[i].addr < ram_end) {
> + uint64_t delta;
> +
> + src[i].type = E820_UNUSABLE;
> + delta = ram_end - src[i].addr;
> + /* The end < ram_end should weed this out */
> + if (src[i].size - delta < 0)
> + src[i].type = 0;
> + else {
> + src[i].size -= delta;
> + src[i].addr = ram_end;
> + }
> + if (src[i].addr + src[i].size != end) {
> + /* We messed up somewhere */
> + src[i].type = 0;
> + LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Computed E820
> wrongly. Continuing on.");
> + }
> + }
> + /* Lastly, convert the RAM to UNSUABLE. Look in the Linux kernel
> + at git commit 2f14ddc3a7146ea4cd5a3d1ecd993f85f2e4f948
> + "xen/setup: Inhibit resource API from using System RAM E820
> + gaps as PCI mem gaps" for full explanation. */
> + if (end > ram_end)
> + src[i].type = E820_UNUSABLE;
> + }
> +
> + /* Check if there is a region between ram_end and start. */
> + if (start > ram_end) {
> + int add_unusable = 1;
> + for (i = 0; i < nr && add_unusable; i++) {
> + if (src[i].type != E820_UNUSABLE)
> + continue;
> + if (ram_end != src[i].addr)
> + continue;
> + if (start != src[i].addr + src[i].size) {
> + /* there is one, adjust it */
> + src[i].size = start - src[i].addr;
> + }
> + add_unusable = 0;
> + }
> + /* .. and if not present, add it in. This is to guard against
> + the Linux guest assuming that the gap between the end of
> + RAM region and the start of the E820_[ACPI,NVS,RESERVED]
> + is PCI I/O space. Which it certainly is _not_. */
> + if (add_unusable) {
> + e820[idx].type = E820_UNUSABLE;
> + e820[idx].addr = ram_end;
> + e820[idx].size = start - ram_end;
> + idx++;
> + }
> + }
> + /* Almost done: copy them over, ignoring the undesireable ones */
> + for (i = 0; i < nr; i++) {
> + if ((src[i].type == E820_RAM) ||
> + (src[i].type == 0))
> + continue;
> +
> + e820[idx].type = src[i].type;
> + e820[idx].addr = src[i].addr;
> + e820[idx].size = src[i].size;
> + idx++;
> + }
> + /* At this point we have the mapped RAM + E820 entries from src. */
> + if (balloon_kb) {
> + /* and if we truncated the RAM region, then add it to the end. */
> + e820[idx].type = E820_RAM;
> + e820[idx].addr = (uint64_t)(1ULL << 32) > last ?
> + (uint64_t)(1ULL << 32) : last;
> + /* also add the balloon memory to the end. */
> + e820[idx].size = (uint64_t)(delta_kb << 10) +
> + (uint64_t)(balloon_kb << 10);
> + idx++;
> +
> + }
> + nr = idx;
> +
> + for (i = 0; i < nr; i++) {
> + LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, ":\t[%"PRIx64" -> %"PRIx64"] %s",
> + e820[i].addr >> 12, (e820[i].addr + e820[i].size) >> 12,
> + e820_names(e820[i].type));
> + }
> +
> + /* Done: copy the sanitized version. */
> + *nr_entries = nr;
> + memcpy(src, e820, nr * sizeof(struct e820entry));
> + return 0;
> +}
> +
> +static int libxl__e820_alloc(libxl__gc *gc, uint32_t domid,
> libxl_domain_config *d_config)
> +{
> + libxl_ctx *ctx = libxl__gc_owner(gc);
> + int rc;
> + uint32_t nr;
> + struct e820entry map[E820MAX];
> + libxl_domain_build_info *b_info;
> +
> + if (d_config == NULL || d_config->c_info.type == LIBXL_DOMAIN_TYPE_HVM)
> + return ERROR_INVAL;
> +
> + b_info = &d_config->b_info;
> + if (!b_info->u.pv.e820_host)
> + return ERROR_INVAL;
> +
> + rc = xc_get_machine_memory_map(ctx->xch, map, E820MAX);
> + if (rc < 0) {
> + errno = rc;
> + return ERROR_FAIL;
> + }
> + nr = rc;
> + rc = e820_sanitize(ctx, map, &nr, b_info->target_memkb,
> + (b_info->max_memkb - b_info->target_memkb) +
> + b_info->u.pv.slack_memkb);
> + if (rc)
> + return ERROR_FAIL;
> +
> + rc = xc_domain_set_memory_map(ctx->xch, domid, map, nr);
> +
> + if (rc < 0) {
> + errno = rc;
> + return ERROR_FAIL;
> + }
> + return 0;
> +}
> +
> +int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
> + uint32_t domid)
> +{
> + int rc = 0;
> + if (d_config->c_info.type == LIBXL_DOMAIN_TYPE_PV &&
> + d_config->b_info.u.pv.e820_host) {
> + rc = libxl__e820_alloc(gc, domid, d_config);
> + if (rc)
> + LIBXL__LOG_ERRNO(libxl__gc_owner(gc), LIBXL__LOG_ERROR,
> + "Failed while collecting E820 with: %d (errno:%d)\n",
> + rc, errno);
> + }
> + return rc;
> +}
> --
> 1.7.2.5
>
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