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Blame SOURCES/kvm-Simplify-machine-option-queries-with-qemu_get_machin.patch

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From cfb7a42b4241cf1a8dea0f33947c66671923f694 Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Tue, 6 Aug 2013 13:17:05 +0200
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Subject: [PATCH 12/28] Simplify -machine option queries with qemu_get_machine_opts()
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <1375795025-28674-7-git-send-email-armbru@redhat.com>
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Patchwork-id: 52996
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O-Subject: [PATCH 7.0 qemu-kvm 6/6] Simplify -machine option queries with qemu_get_machine_opts()
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Bugzilla: 980782
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Michal Novotny <minovotn@redhat.com>
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RH-Acked-by: Orit Wasserman <owasserm@redhat.com>
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The previous two commits fixed bugs in -machine option queries.  I
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can't find fault with the remaining queries, but let's use
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qemu_get_machine_opts() everywhere, for consistency, simplicity and
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robustness.
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Message-id: 1372943363-24081-7-git-send-email-armbru@redhat.com
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Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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(cherry picked from commit 2ff3de685a875ece3ee21256736c0a9dbf39dc4c)
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---
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 device_tree.c  | 28 ++++++++++------------------
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 exec.c         | 12 ++++--------
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 hw/arm/boot.c  |  8 +-------
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 hw/ppc/e500.c  | 12 +++---------
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 hw/ppc/spapr.c | 28 ++++++++++------------------
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 vl.c           | 22 ++++++----------------
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 6 files changed, 34 insertions(+), 76 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 device_tree.c  |   28 ++++++++++------------------
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 exec.c         |   12 ++++--------
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 hw/arm/boot.c  |    8 +-------
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 hw/ppc/e500.c  |   12 +++---------
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 hw/ppc/spapr.c |   28 ++++++++++------------------
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 vl.c           |   22 ++++++----------------
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 6 files changed, 34 insertions(+), 76 deletions(-)
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diff --git a/device_tree.c b/device_tree.c
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index 56af24b..77cbe04 100644
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--- a/device_tree.c
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+++ b/device_tree.c
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@@ -21,6 +21,7 @@
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 #include "config.h"
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 #include "qemu-common.h"
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 #include "sysemu/device_tree.h"
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+#include "sysemu/sysemu.h"
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 #include "hw/loader.h"
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 #include "qemu/option.h"
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 #include "qemu/config-file.h"
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@@ -239,14 +240,10 @@ uint32_t qemu_devtree_alloc_phandle(void *fdt)
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      * which phandle id to start allocting phandles.
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      */
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     if (!phandle) {
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-        QemuOpts *machine_opts;
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-        machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-        if (machine_opts) {
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-            const char *phandle_start;
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-            phandle_start = qemu_opt_get(machine_opts, "phandle_start");
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-            if (phandle_start) {
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-                phandle = strtoul(phandle_start, NULL, 0);
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-            }
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+        const char *phandle_start = qemu_opt_get(qemu_get_machine_opts(),
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+                                                 "phandle_start");
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+        if (phandle_start) {
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+            phandle = strtoul(phandle_start, NULL, 0);
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         }
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     }
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@@ -307,15 +304,10 @@ int qemu_devtree_add_subnode(void *fdt, const char *name)
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 void qemu_devtree_dumpdtb(void *fdt, int size)
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 {
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-    QemuOpts *machine_opts;
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-
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts) {
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-        const char *dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
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-        if (dumpdtb) {
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-            /* Dump the dtb to a file and quit */
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-            exit(g_file_set_contents(dumpdtb, fdt, size, NULL) ? 0 : 1);
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-        }
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-    }
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+    const char *dumpdtb = qemu_opt_get(qemu_get_machine_opts(), "dumpdtb");
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+    if (dumpdtb) {
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+        /* Dump the dtb to a file and quit */
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+        exit(g_file_set_contents(dumpdtb, fdt, size, NULL) ? 0 : 1);
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+    }
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 }
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diff --git a/exec.c b/exec.c
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index aec65c5..ee22b9b 100644
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--- a/exec.c
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+++ b/exec.c
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@@ -31,6 +31,7 @@
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 #include "hw/qdev.h"
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 #include "qemu/osdep.h"
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 #include "sysemu/kvm.h"
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+#include "sysemu/sysemu.h"
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 #include "hw/xen/xen.h"
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 #include "qemu/timer.h"
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 #include "qemu/config-file.h"
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@@ -979,12 +980,10 @@ ram_addr_t last_ram_offset(void)
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 static void qemu_ram_setup_dump(void *addr, ram_addr_t size)
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 {
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     int ret;
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-    QemuOpts *machine_opts;
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     /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts &&
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-        !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) {
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+    if (!qemu_opt_get_bool(qemu_get_machine_opts(),
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+                           "dump-guest-core", true)) {
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         ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP);
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         if (ret) {
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             perror("qemu_madvise");
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@@ -1031,10 +1030,7 @@ void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev)
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 static int memory_try_enable_merging(void *addr, size_t len)
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 {
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-    QemuOpts *opts;
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-
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-    opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (opts && !qemu_opt_get_bool(opts, "mem-merge", true)) {
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+    if (!qemu_opt_get_bool(qemu_get_machine_opts(), "mem-merge", true)) {
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         /* disabled by the user */
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         return 0;
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     }
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diff --git a/hw/arm/boot.c b/hw/arm/boot.c
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index 6bffc3d..6436109 100644
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--- a/hw/arm/boot.c
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+++ b/hw/arm/boot.c
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@@ -365,7 +365,6 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
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     uint64_t elf_entry;
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     hwaddr entry;
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     int big_endian;
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-    QemuOpts *machine_opts;
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     /* Load the kernel.  */
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     if (!info->kernel_filename) {
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@@ -373,12 +372,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
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         exit(1);
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     }
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts) {
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-        info->dtb_filename = qemu_opt_get(machine_opts, "dtb");
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-    } else {
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-        info->dtb_filename = NULL;
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-    }
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+    info->dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
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     if (!info->secondary_cpu_reset_hook) {
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         info->secondary_cpu_reset_hook = default_reset_secondary;
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diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
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index c9ae512..ef3e571 100644
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--- a/hw/ppc/e500.c
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+++ b/hw/ppc/e500.c
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@@ -137,7 +137,6 @@ static int ppce500_load_device_tree(CPUPPCState *env,
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     uint32_t clock_freq = 400000000;
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     uint32_t tb_freq = 400000000;
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     int i;
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-    const char *toplevel_compat = NULL; /* user override */
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     char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
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     char soc[128];
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     char mpic[128];
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@@ -158,14 +157,9 @@ static int ppce500_load_device_tree(CPUPPCState *env,
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             0x0, 0xe1000000,
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             0x0, 0x10000,
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         };
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-    QemuOpts *machine_opts;
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-    const char *dtb_file = NULL;
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-
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts) {
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-        dtb_file = qemu_opt_get(machine_opts, "dtb");
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-        toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
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-    }
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+    QemuOpts *machine_opts = qemu_get_machine_opts();
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+    const char *dtb_file = qemu_opt_get(machine_opts, "dtb");
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+    const char *toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
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     if (dtb_file) {
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         char *filename;
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diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
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index c96ac81..6a46488 100644
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--- a/hw/ppc/spapr.c
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+++ b/hw/ppc/spapr.c
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@@ -678,27 +678,19 @@ static void spapr_cpu_reset(void *opaque)
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 static void spapr_create_nvram(sPAPREnvironment *spapr)
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 {
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-    QemuOpts *machine_opts;
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-    DeviceState *dev;
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+    DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram");
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+    const char *drivename = qemu_opt_get(qemu_get_machine_opts(), "nvram");
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-    dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram");
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+    if (drivename) {
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+        BlockDriverState *bs;
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts) {
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-        const char *drivename;
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-
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-        drivename = qemu_opt_get(machine_opts, "nvram");
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-        if (drivename) {
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-            BlockDriverState *bs;
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-
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-            bs = bdrv_find(drivename);
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-            if (!bs) {
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-                fprintf(stderr, "No such block device \"%s\" for nvram\n",
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-                        drivename);
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-                exit(1);
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-            }
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-            qdev_prop_set_drive_nofail(dev, "drive", bs);
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+        bs = bdrv_find(drivename);
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+        if (!bs) {
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+            fprintf(stderr, "No such block device \"%s\" for nvram\n",
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+                    drivename);
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+            exit(1);
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         }
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+        qdev_prop_set_drive_nofail(dev, "drive", bs);
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     }
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     qdev_init_nofail(dev);
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diff --git a/vl.c b/vl.c
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index 0ed9257..d424af7 100644
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--- a/vl.c
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+++ b/vl.c
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@@ -1037,15 +1037,9 @@ static int parse_sandbox(QemuOpts *opts, void *opaque)
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     return 0;
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 }
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-/*********QEMU USB setting******/
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 bool usb_enabled(bool default_usb)
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 {
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-    QemuOpts *mach_opts;
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-    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (mach_opts) {
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-        return qemu_opt_get_bool(mach_opts, "usb", default_usb);
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-    }
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-    return default_usb;
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+    return qemu_opt_get_bool(qemu_get_machine_opts(), "usb", default_usb);
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 }
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 #ifndef _WIN32
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@@ -4136,14 +4130,10 @@ int main(int argc, char **argv, char **envp)
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         qtest_init();
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     }
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-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
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-    if (machine_opts) {
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-        kernel_filename = qemu_opt_get(machine_opts, "kernel");
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-        initrd_filename = qemu_opt_get(machine_opts, "initrd");
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-        kernel_cmdline = qemu_opt_get(machine_opts, "append");
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-    } else {
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-        kernel_filename = initrd_filename = kernel_cmdline = NULL;
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-    }
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+    machine_opts = qemu_get_machine_opts();
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+    kernel_filename = qemu_opt_get(machine_opts, "kernel");
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+    initrd_filename = qemu_opt_get(machine_opts, "initrd");
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+    kernel_cmdline = qemu_opt_get(machine_opts, "append");
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     if (!kernel_cmdline) {
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         kernel_cmdline = "";
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@@ -4161,7 +4151,7 @@ int main(int argc, char **argv, char **envp)
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         exit(1);
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     }
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-    if (!linux_boot && machine_opts && qemu_opt_get(machine_opts, "dtb")) {
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+    if (!linux_boot && qemu_opt_get(machine_opts, "dtb")) {
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         fprintf(stderr, "-dtb only allowed with -kernel option\n");
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         exit(1);
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     }
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-- 
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1.7.1
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