[PATCH 3 of 3] [PATCH] kvm-userspace: fix gdbstub kvm integration

[Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx>
# Date 1228989958 -3600
# Node ID f80fb35de91fe69dae889c70948c9a53212ee444
# Parent  6f228c807ad0b239b7342d2974debfc66418d784
[PATCH] kvm-userspace: fix gdbstub kvm integration

From: Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx>

Some recent qemu upstream merges brought in a new concept to not use "env" as
current cpu in gdb_handle_packet anymore. But the kvm calls still do, this
leads to SIGDEV's as env is not initialized when calling the functions like
kvm_save_registers.

Insted there is now a gdbstate structure holding current cpu for
step/continue and "other" ops splitted.

This patch changes the kvm_save_registers calls to use the right CPUState
variable for the kvm calls in gdb_handle_packet.

Signed-off-by: Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx>
---

[diffstat]
 gdbstub.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

[diff]

diff --git a/qemu/gdbstub.c b/qemu/gdbstub.c
--- a/qemu/gdbstub.c
+++ b/qemu/gdbstub.c
@@ -1348,7 +1348,7 @@ static int gdb_handle_packet(GDBState *s
         }
         break;
     case 'g':
-        kvm_save_registers(env);
+        kvm_save_registers(s->g_cpu);
         len = 0;
         for (addr = 0; addr < num_g_regs; addr++) {
             reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr);
@@ -1366,7 +1366,7 @@ static int gdb_handle_packet(GDBState *s
             len -= reg_size;
             registers += reg_size;
         }
-        kvm_load_registers(env);
+        kvm_load_registers(s->g_cpu);
         put_packet(s, "OK");
         break;
     case 'm':
--
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