[packages/xen] - added some ggc9 fixes

[baggins]

commit 56bb081c5b0b96004e28051d093fc6236ac66b1f
Author: Jan Rękorajski <baggins at pld-linux.org>
Date:   Sun Oct 27 13:02:23 2019 +0100

    - added some ggc9 fixes

 gcc9.patch | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 xen.spec   |  4 +++-
 2 files changed, 77 insertions(+), 1 deletion(-)
---
diff --git a/xen.spec b/xen.spec
index 449b028..5cd599e 100644
--- a/xen.spec
+++ b/xen.spec
@@ -41,7 +41,7 @@ Summary(pl.UTF-8):	Xen - monitor maszyny wirtualnej
 Name:		xen
 # NOTE: 4.9.0 being prepared on DEVEL branch
 Version:	4.6.6
-Release:	1
+Release:	2
 License:	GPL v2, interface parts on BSD-like
 Group:		Applications/System
 # for available versions see https://www.xenproject.org/developers/teams/hypervisor.html
@@ -105,6 +105,7 @@ Patch26:	deprecated-readdir_r.patch
 Patch27:	ipxe-build.patch
 Patch28:	sysmacros.patch
 Patch29:	unused-function.patch
+Patch30:	gcc9.patch
 URL:		http://www.xen.org/products/xenhyp.html
 BuildRequires:	autoconf >= 2.67
 %ifarch %{ix86} %{x8664}
@@ -411,6 +412,7 @@ Nadzorca Xen w postaci, która może być uruchomiona wprost z firmware
 %patch27 -p1
 %patch28 -p1
 %patch29 -p1
+%patch30 -p1
 
 # stubdom sources
 ln -s %{SOURCE10} %{SOURCE11} %{SOURCE12} %{SOURCE13} %{SOURCE14} stubdom
diff --git a/gcc9.patch b/gcc9.patch
new file mode 100644
index 0000000..92fae00
--- /dev/null
+++ b/gcc9.patch
@@ -0,0 +1,74 @@
+From 3fd3b266d4198c06e8e421ca515d9ba09ccd5155 Mon Sep 17 00:00:00 2001
+From: Jan Beulich <jbeulich at suse.com>
+Date: Mon, 13 May 2019 09:51:23 +0200
+Subject: [PATCH] trace: fix build with gcc9
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+While I've not observed this myself, gcc 9 (imo validly) reportedly may
+complain
+
+trace.c: In function '__trace_hypercall':
+trace.c:826:19: error: taking address of packed member of 'struct <anonymous>' may result in an unaligned pointer value [-Werror=address-of-packed-member]
+  826 |     uint32_t *a = d.args;
+
+and the fix is rather simple - remove the __packed attribute. Introduce
+a BUILD_BUG_ON() as replacement, for the unlikely case that Xen might
+get ported to an architecture where array alignment higher that that of
+its elements.
+
+Reported-by: Martin Liška <martin.liska at suse.com>
+Signed-off-by: Jan Beulich <jbeulich at suse.com>
+Acked-by: George Dunlap <george.dunlap at citrix.com>
+---
+ xen/common/trace.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/xen/common/trace.c b/xen/common/trace.c
+index cc294fc38473..d1ef81407b71 100644
+--- a/xen/common/trace.c
++++ b/xen/common/trace.c
+@@ -819,12 +819,18 @@ void __trace_var(u32 event, bool_t cycles, unsigned int extra,
+ void __trace_hypercall(uint32_t event, unsigned long op,
+                        const xen_ulong_t *args)
+ {
+-    struct __packed {
++    struct {
+         uint32_t op;
+         uint32_t args[6];
+     } d;
+     uint32_t *a = d.args;
+ 
++    /*
++     * In lieu of using __packed above, which gcc9 legitimately doesn't
++     * like in combination with the address of d.args[] taken.
++     */
++    BUILD_BUG_ON(offsetof(typeof(d), args) != sizeof(d.op));
++
+ #define APPEND_ARG32(i)                         \
+     do {                                        \
+         unsigned i_ = (i);                      \
+--- xen-4.11.1/xen/drivers/passthrough/vtd/vtd.h.orig	2018-11-29 14:04:11.000000000 +0000
++++ xen-4.11.1/xen/drivers/passthrough/vtd/vtd.h	2019-02-05 21:32:50.056774501 +0000
+@@ -28,7 +28,7 @@
+ /* Allow for both IOAPIC and IOSAPIC. */
+ #define IO_xAPIC_route_entry IO_APIC_route_entry
+ 
+-struct IO_APIC_route_remap_entry {
++struct __packed IO_APIC_route_remap_entry {
+     union {
+         u64 val;
+         struct {
+--- xen-4.11.1/xen/arch/x86/cpu/mtrr/generic.c.orig	2018-11-29 14:04:11.000000000 +0000
++++ xen-4.11.1/xen/arch/x86/cpu/mtrr/generic.c	2019-02-10 19:24:09.378805103 +0000
+@@ -171,6 +171,9 @@
+ 	printk("%sMTRR variable ranges %sabled:\n", level,
+ 	       mtrr_state.enabled ? "en" : "dis");
+ 	width = (paddr_bits - PAGE_SHIFT + 3) / 4;
++	if (  width > 64 ) {
++		width=64;
++	}
+ 
+ 	for (i = 0; i < num_var_ranges; ++i) {
+ 		if (mtrr_state.var_ranges[i].mask & MTRR_PHYSMASK_VALID)
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/packages/xen.git/commitdiff/56bb081c5b0b96004e28051d093fc6236ac66b1f