Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* cpu-exec fixes (Emilio, Laurent)
* TCG bugfix in queue.h (Paolo)
* high address load for linuxboot (Zhijian)
* PVH support (Liam, Stefano)
* misc i386 changes (Paolo, Robert, Doug)
* configure tweak for openpty (Thomas)
* elf2dmp port to Windows (Viktor)
* initial improvements to Makefile infrastructure (Yang + GSoC 2013)

# gpg: Signature made Tue 05 Feb 2019 17:34:42 GMT
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (76 commits)
  queue: fix QTAILQ_FOREACH_REVERSE_SAFE
  scsi-generic: Convert from DPRINTF() macro to trace events
  scsi-disk: Convert from DPRINTF() macro to trace events
  pc: Use hotplug_handler_(plug|unplug|unplug_request)
  i386: hvf: Fix smp boot hangs
  hw/vfio/Makefile.objs: Create new CONFIG_* variables for VFIO core and PCI
  hw/i2c/Makefile.objs: Create new CONFIG_* variables for EEPROM and ACPI controller
  hw/tricore/Makefile.objs: Create CONFIG_* for tricore
  hw/openrisc/Makefile.objs: Create CONFIG_* for openrisc
  hw/moxie/Makefile.objs: Conditionally build moxie
  hw/hppa/Makefile.objs: Create CONFIG_* for hppa
  hw/cris/Makefile.objs: Create CONFIG_* for cris
  hw/alpha/Makefile.objs: Create CONFIG_* for alpha
  hw/sparc64/Makefile.objs: Create CONFIG_* for sparc64
  hw/riscv/Makefile.objs: Create CONFIG_* for riscv boards
  hw/nios2/Makefile.objs: Conditionally build nios2
  hw/xtensa/Makefile.objs: Build xtensa_sim and xtensa_fpga conditionally
  hw/lm32/Makefile.objs: Conditionally build lm32 and milkmyst
  hw/sparc/Makefile.objs: CONFIG_* for sun4m and leon3 created
  hw/s390/Makefile.objs: Create new CONFIG_* variables for s390x boards and devices
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	qemu-deprecated.texi

5 files changed, 234 insertions, 2 deletions

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 02f114085f..05f9f45c3d 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -180,7 +180,6 @@ struct MachineClass {
     int default_cpus;
     unsigned int no_serial:1,
         no_parallel:1,
-        use_virtcon:1,
         no_floppy:1,
         no_cdrom:1,
         no_sdcard:1,
diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h
index e2cb675195..690f9238c8 100644
--- a/include/hw/elf_ops.h
+++ b/include/hw/elf_ops.h
@@ -265,7 +265,53 @@ fail:
     return ret;
 }
 
+/*
+ * Given 'nhdr', a pointer to a range of ELF Notes, search through them
+ * for a note matching type 'elf_note_type' and return a pointer to
+ * the matching ELF note.
+ */
+static struct elf_note *glue(get_elf_note_type, SZ)(struct elf_note *nhdr,
+                                                    elf_word note_size,
+                                                    elf_word phdr_align,
+                                                    elf_word elf_note_type)
+{
+    elf_word nhdr_size = sizeof(struct elf_note);
+    elf_word elf_note_entry_offset = 0;
+    elf_word note_type;
+    elf_word nhdr_namesz;
+    elf_word nhdr_descsz;
+
+    if (nhdr == NULL) {
+        return NULL;
+    }
+
+    note_type = nhdr->n_type;
+    while (note_type != elf_note_type) {
+        nhdr_namesz = nhdr->n_namesz;
+        nhdr_descsz = nhdr->n_descsz;
+
+        elf_note_entry_offset = nhdr_size +
+            QEMU_ALIGN_UP(nhdr_namesz, phdr_align) +
+            QEMU_ALIGN_UP(nhdr_descsz, phdr_align);
+
+        /*
+         * If the offset calculated in this iteration exceeds the
+         * supplied size, we are done and no matching note was found.
+         */
+        if (elf_note_entry_offset > note_size) {
+            return NULL;
+        }
+
+        /* skip to the next ELF Note entry */
+        nhdr = (void *)nhdr + elf_note_entry_offset;
+        note_type = nhdr->n_type;
+    }
+
+    return nhdr;
+}
+
 static int glue(load_elf, SZ)(const char *name, int fd,
+                              uint64_t (*elf_note_fn)(void *, void *, bool),
                               uint64_t (*translate_fn)(void *, uint64_t),
                               void *translate_opaque,
                               int must_swab, uint64_t *pentry,
@@ -496,8 +542,39 @@ static int glue(load_elf, SZ)(const char *name, int fd,
                 high = addr + mem_size;
 
             data = NULL;
+
+        } else if (ph->p_type == PT_NOTE && elf_note_fn) {
+            struct elf_note *nhdr = NULL;
+
+            file_size = ph->p_filesz; /* Size of the range of ELF notes */
+            data = g_malloc0(file_size);
+            if (ph->p_filesz > 0) {
+                if (lseek(fd, ph->p_offset, SEEK_SET) < 0) {
+                    goto fail;
+                }
+                if (read(fd, data, file_size) != file_size) {
+                    goto fail;
+                }
+            }
+
+            /*
+             * Search the ELF notes to find one with a type matching the
+             * value passed in via 'translate_opaque'
+             */
+            nhdr = (struct elf_note *)data;
+            assert(translate_opaque != NULL);
+            nhdr = glue(get_elf_note_type, SZ)(nhdr, file_size, ph->p_align,
+                                               *(uint64_t *)translate_opaque);
+            if (nhdr != NULL) {
+                bool is64 =
+                    sizeof(struct elf_note) == sizeof(struct elf64_note);
+                elf_note_fn((void *)nhdr, (void *)&ph->p_align, is64);
+            }
+            g_free(data);
+            data = NULL;
         }
     }
+
     g_free(phdr);
     if (lowaddr)
         *lowaddr = (uint64_t)(elf_sword)low;
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 882fd8dfd2..3ff127ebd0 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -133,6 +133,9 @@ typedef struct PCMachineClass {
 
     /* use DMA capable linuxboot option rom */
     bool linuxboot_dma_enabled;
+
+    /* use PVH to load kernels that support this feature */
+    bool pvh_enabled;
 } PCMachineClass;
 
 #define TYPE_PC_MACHINE "generic-pc-machine"
diff --git a/include/hw/loader.h b/include/hw/loader.h
index de8a29603b..3e1b3a4566 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -93,6 +93,8 @@ const char *load_elf_strerror(int error);
 
 /** load_elf_ram_sym:
  * @filename: Path of ELF file
+ * @elf_note_fn: optional function to parse ELF Note type
+ *               passed via @translate_opaque
  * @translate_fn: optional function to translate load addresses
  * @translate_opaque: opaque data passed to @translate_fn
  * @pentry: Populated with program entry point. Ignored if NULL.
@@ -125,6 +127,7 @@ typedef void (*symbol_fn_t)(const char *st_name, int st_info,
                             uint64_t st_value, uint64_t st_size);
 
 int load_elf_ram_sym(const char *filename,
+                     uint64_t (*elf_note_fn)(void *, void *, bool),
                      uint64_t (*translate_fn)(void *, uint64_t),
                      void *translate_opaque, uint64_t *pentry,
                      uint64_t *lowaddr, uint64_t *highaddr, int big_endian,
@@ -136,6 +139,7 @@ int load_elf_ram_sym(const char *filename,
  * symbol callback function
  */
 int load_elf_ram(const char *filename,
+                 uint64_t (*elf_note_fn)(void *, void *, bool),
                  uint64_t (*translate_fn)(void *, uint64_t),
                  void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
                  uint64_t *highaddr, int big_endian, int elf_machine,
@@ -146,6 +150,7 @@ int load_elf_ram(const char *filename,
  * Same as load_elf_ram(), but always loads the elf as ROM
  */
 int load_elf_as(const char *filename,
+                uint64_t (*elf_note_fn)(void *, void *, bool),
                 uint64_t (*translate_fn)(void *, uint64_t),
                 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
                 uint64_t *highaddr, int big_endian, int elf_machine,
@@ -155,7 +160,9 @@ int load_elf_as(const char *filename,
  * Same as load_elf_as(), but doesn't allow the caller to specify an
  * AddressSpace.
  */
-int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
+int load_elf(const char *filename,
+             uint64_t (*elf_note_fn)(void *, void *, bool),
+             uint64_t (*translate_fn)(void *, uint64_t),
              void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
              uint64_t *highaddr, int big_endian, int elf_machine,
              int clear_lsb, int data_swab);
diff --git a/include/hw/xen/start_info.h b/include/hw/xen/start_info.h
new file mode 100644
index 0000000000..348779eb10
--- /dev/null
+++ b/include/hw/xen/start_info.h
@@ -0,0 +1,146 @@
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Copyright (c) 2016, Citrix Systems, Inc.
+ */
+
+#ifndef __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
+#define __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
+
+/*
+ * Start of day structure passed to PVH guests and to HVM guests in %ebx.
+ *
+ * NOTE: nothing will be loaded at physical address 0, so a 0 value in any
+ * of the address fields should be treated as not present.
+ *
+ *  0 +----------------+
+ *    | magic          | Contains the magic value XEN_HVM_START_MAGIC_VALUE
+ *    |                | ("xEn3" with the 0x80 bit of the "E" set).
+ *  4 +----------------+
+ *    | version        | Version of this structure. Current version is 1. New
+ *    |                | versions are guaranteed to be backwards-compatible.
+ *  8 +----------------+
+ *    | flags          | SIF_xxx flags.
+ * 12 +----------------+
+ *    | nr_modules     | Number of modules passed to the kernel.
+ * 16 +----------------+
+ *    | modlist_paddr  | Physical address of an array of modules
+ *    |                | (layout of the structure below).
+ * 24 +----------------+
+ *    | cmdline_paddr  | Physical address of the command line,
+ *    |                | a zero-terminated ASCII string.
+ * 32 +----------------+
+ *    | rsdp_paddr     | Physical address of the RSDP ACPI data structure.
+ * 40 +----------------+
+ *    | memmap_paddr   | Physical address of the (optional) memory map. Only
+ *    |                | present in version 1 and newer of the structure.
+ * 48 +----------------+
+ *    | memmap_entries | Number of entries in the memory map table. Only
+ *    |                | present in version 1 and newer of the structure.
+ *    |                | Zero if there is no memory map being provided.
+ * 52 +----------------+
+ *    | reserved       | Version 1 and newer only.
+ * 56 +----------------+
+ *
+ * The layout of each entry in the module structure is the following:
+ *
+ *  0 +----------------+
+ *    | paddr          | Physical address of the module.
+ *  8 +----------------+
+ *    | size           | Size of the module in bytes.
+ * 16 +----------------+
+ *    | cmdline_paddr  | Physical address of the command line,
+ *    |                | a zero-terminated ASCII string.
+ * 24 +----------------+
+ *    | reserved       |
+ * 32 +----------------+
+ *
+ * The layout of each entry in the memory map table is as follows:
+ *
+ *  0 +----------------+
+ *    | addr           | Base address
+ *  8 +----------------+
+ *    | size           | Size of mapping in bytes
+ * 16 +----------------+
+ *    | type           | Type of mapping as defined between the hypervisor
+ *    |                | and guest it's starting. E820_TYPE_xxx, for example.
+ * 20 +----------------|
+ *    | reserved       |
+ * 24 +----------------+
+ *
+ * The address and sizes are always a 64bit little endian unsigned integer.
+ *
+ * NB: Xen on x86 will always try to place all the data below the 4GiB
+ * boundary.
+ *
+ * Version numbers of the hvm_start_info structure have evolved like this:
+ *
+ * Version 0:
+ *
+ * Version 1:   Added the memmap_paddr/memmap_entries fields (plus 4 bytes of
+ *              padding) to the end of the hvm_start_info struct. These new
+ *              fields can be used to pass a memory map to the guest. The
+ *              memory map is optional and so guests that understand version 1
+ *              of the structure must check that memmap_entries is non-zero
+ *              before trying to read the memory map.
+ */
+#define XEN_HVM_START_MAGIC_VALUE 0x336ec578
+
+/*
+ * C representation of the x86/HVM start info layout.
+ *
+ * The canonical definition of this layout is above, this is just a way to
+ * represent the layout described there using C types.
+ */
+struct hvm_start_info {
+    uint32_t magic;             /* Contains the magic value 0x336ec578       */
+                                /* ("xEn3" with the 0x80 bit of the "E" set).*/
+    uint32_t version;           /* Version of this structure.                */
+    uint32_t flags;             /* SIF_xxx flags.                            */
+    uint32_t nr_modules;        /* Number of modules passed to the kernel.   */
+    uint64_t modlist_paddr;     /* Physical address of an array of           */
+                                /* hvm_modlist_entry.                        */
+    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
+    uint64_t rsdp_paddr;        /* Physical address of the RSDP ACPI data    */
+                                /* structure.                                */
+    uint64_t memmap_paddr;      /* Physical address of an array of           */
+                                /* hvm_memmap_table_entry. Only present in   */
+                                /* version 1 and newer of the structure      */
+    uint32_t memmap_entries;    /* Number of entries in the memmap table.    */
+                                /* Only present in version 1 and newer of    */
+                                /* the structure. Value will be zero if      */
+                                /* there is no memory map being provided.    */
+    uint32_t reserved;
+};
+
+struct hvm_modlist_entry {
+    uint64_t paddr;             /* Physical address of the module.           */
+    uint64_t size;              /* Size of the module in bytes.              */
+    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
+    uint64_t reserved;
+};
+
+struct hvm_memmap_table_entry {
+    uint64_t addr;              /* Base address of the memory region         */
+    uint64_t size;              /* Size of the memory region in bytes        */
+    uint32_t type;              /* Mapping type                              */
+    uint32_t reserved;
+};
+
+#endif /* __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ */