qemu-kvm/kvm-softmmu-physmem-Simplify-flatview_write-and-address_.patch

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From 916423392b46167c6683b0240610bb5a745590da Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 13 Apr 2022 14:51:06 -0400
Subject: [PATCH 2/3] softmmu/physmem: Simplify flatview_write and
address_space_access_valid
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
RH-MergeRequest: 151: hw/intc/arm_gicv3: Check for !MEMTX_OK instead of MEMTX_ERROR
RH-Commit: [2/3] daabe41eefd5c519def592e374fa368e32a680d3 (jmaloy/qemu-kvm)
RH-Bugzilla: 1999236
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1999236
Upstream: Merged
CVE: CVE-2021-3750
commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9
Author: Philippe Mathieu-Daudé <philmd@redhat.com>
Date: Wed Dec 15 19:24:20 2021 +0100
softmmu/physmem: Simplify flatview_write and address_space_access_valid
Remove unuseful local 'result' variables.
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211215182421.418374-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
softmmu/physmem.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 3524c04c2a..483a31be81 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2815,14 +2815,11 @@ static MemTxResult flatview_write(FlatView *fv, hwaddr addr, MemTxAttrs attrs,
hwaddr l;
hwaddr addr1;
MemoryRegion *mr;
- MemTxResult result = MEMTX_OK;
l = len;
mr = flatview_translate(fv, addr, &addr1, &l, true, attrs);
- result = flatview_write_continue(fv, addr, attrs, buf, len,
- addr1, l, mr);
-
- return result;
+ return flatview_write_continue(fv, addr, attrs, buf, len,
+ addr1, l, mr);
}
/* Called within RCU critical section. */
@@ -3119,12 +3116,10 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs)
{
FlatView *fv;
- bool result;
RCU_READ_LOCK_GUARD();
fv = address_space_to_flatview(as);
- result = flatview_access_valid(fv, addr, len, is_write, attrs);
- return result;
+ return flatview_access_valid(fv, addr, len, is_write, attrs);
}
static hwaddr
--
2.27.0