File xen.2de2b10b2252761baa5dd0077df384dbfcca8212.patch of Package xen

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File xen.2de2b10b2252761baa5dd0077df384dbfcca8212.patch of Package xen

From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Tue, 22 May 2018 21:47:45 +0200
Subject: 2de2b10b2252761baa5dd0077df384dbfcca8212
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

tools/kdd: alternative way of muting spurious gcc warning

Older gcc does not support #pragma GCC diagnostics, so use alternative
approach - change variable type to uint32_t (this code handle 32-bit
requests only anyway), which apparently also avoid gcc complaining about
this (otherwise correct) code.

Fixes 437e00fea04becc91c1b6bc1c0baa636b067a5cc "tools/kdd: mute spurious
gcc warning"

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Release-acked-by: Juergen Gross <jgross@suse.com>
Acked-by: Tim Deegan <tim@xen.org>
---
 tools/debugger/kdd/kdd.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/tools/debugger/kdd/kdd.c
+++ b/tools/debugger/kdd/kdd.c
@@ -678,36 +678,33 @@ static void kdd_handle_read_ctrl(kdd_state *s)
             break;
         case 0x2: /* Control registers */
             if (len > sizeof ctrl.c64) 
                 len = sizeof ctrl.c64;
             memcpy(buf, (uint8_t *)&ctrl, len);
             break;
         default:
             KDD_LOG(s, "Unknown control space 0x%"PRIx64"\n", addr);
             len = 0;
         }
     } else {
         /* 32-bit control-register space starts at 0x[2]cc, for 84 bytes */
-        uint64_t offset = addr;
+        uint32_t offset = addr;
         if (offset > 0x200)
             offset -= 0x200;
         offset -= 0xcc;
         if (offset > sizeof ctrl.c32 || offset + len > sizeof ctrl.c32) {
             KDD_LOG(s, "Request outside of known control space\n");
             len = 0;
         } else {
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Warray-bounds"
             memcpy(buf, ((uint8_t *)&ctrl.c32) + offset, len);
-#pragma GCC diagnostic pop
         }
     }
 
     s->txp.cmd.mem.addr = addr;
     s->txp.cmd.mem.length_req = s->rxp.cmd.mem.length_req;
     s->txp.cmd.mem.length_rsp = len;
     s->txp.cmd.mem.status = ((len) ? KDD_STATUS_SUCCESS : KDD_STATUS_FAILURE);
     kdd_send_cmd(s, KDD_CMD_READ_CTRL, len);
 }
 
 /* MSR access */
 static void kdd_handle_read_msr(kdd_state *s)

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File xen.2de2b10b2252761baa5dd0077df384dbfcca8212.patch of Package xen

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