diff mbox series

[PULL,v2,13/31] lsi: check if SIGP bit is already set in Wait reselect

Message ID 1552323335-46779-14-git-send-email-pbonzini@redhat.com
State New
Headers show
Series [PULL,v2,01/31] memory: Do not update coalesced IO range in the case of NOP | expand

Commit Message

Paolo Bonzini March 11, 2019, 4:55 p.m. UTC 
From: Sven Schnelle <svens@stackframe.org>

If SIGP is set, the 'Wait for Reselection' command should jump
immediately to the address stored in the second DWORD of the
instruction. This fixes spurious hangs in the HP-UX 11.11
installer when the SIGP bit gets set by the kernel before the
'Wait for Reselection' command is executed by SCRIPTS.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Tested-by: Helge Deller <deller@gmx.de>
Message-Id: <20190217113717.7077-1-svens@stackframe.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/scsi/lsi53c895a.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index 8ba07f8..bcff859 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -1297,8 +1297,10 @@  again:
                 }
                 break;
             case 2: /* Wait Reselect */
-                if (!lsi_irq_on_rsl(s)) {
-                    lsi_wait_reselect(s);
+                if (s->istat0 & LSI_ISTAT0_SIGP) {
+                    s->dsp = s->dnad;
+                } else if (!lsi_irq_on_rsl(s)) {
+                        lsi_wait_reselect(s);
                 }
                 break;
             case 3: /* Set */