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From 55294fc4a955491f1fd947e4d98bd6df832c88ba Mon Sep 17 00:00:00 2001
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From: Matthew Rosato <mjrosato@linux.ibm.com>
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Date: Fri, 3 Dec 2021 09:27:03 -0500
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Subject: [PATCH 01/42] s390x/pci: use a reserved ID for the default PCI group
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 226: s390: Enhanced Interpretation for PCI Functions and Secure Execution guest dump
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RH-Bugzilla: 1664378 2043909
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Jon Maloy <jmaloy@redhat.com>
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RH-Commit: [1/41] ad3ed38dec95acf0da04d7669fe772d798d039fc
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The current default PCI group being used can technically collide with a
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real group ID passed from a hostdev. Let's instead use a group ID that
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comes from a special pool (0xF0-0xFF) that is architected to be reserved
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for simulated devices.
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Fixes: 28dc86a072 ("s390x/pci: use a PCI Group structure")
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Reviewed-by: Eric Farman <farman@linux.ibm.com>
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Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
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Message-Id: <20211203142706.427279-2-mjrosato@linux.ibm.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry picked from commit b2892a2b9d45d25b909108ca633d19f9d8d673f5)
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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include/hw/s390x/s390-pci-bus.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
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index aa891c178d..2727e7bdef 100644
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--- a/include/hw/s390x/s390-pci-bus.h
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+++ b/include/hw/s390x/s390-pci-bus.h
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@@ -313,7 +313,7 @@ typedef struct ZpciFmb {
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} ZpciFmb;
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QEMU_BUILD_BUG_MSG(offsetof(ZpciFmb, fmt0) != 48, "padding in ZpciFmb");
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-#define ZPCI_DEFAULT_FN_GRP 0x20
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+#define ZPCI_DEFAULT_FN_GRP 0xFF
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typedef struct S390PCIGroup {
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ClpRspQueryPciGrp zpci_group;
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int id;
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--
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2.37.3
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