|
 |
c7c90d |
From ca87b042011f83f8851f0f76b3599d627d61463d Mon Sep 17 00:00:00 2001
|
|
|
c7c90d |
From: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
c7c90d |
Date: Thu, 8 Mar 2018 15:58:19 +0100
|
|
|
c7c90d |
Subject: [PATCH 06/17] address_space_rw: address_space_to_flatview needs RCU
|
|
|
c7c90d |
lock
|
|
|
c7c90d |
|
|
|
c7c90d |
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
c7c90d |
Message-id: <20180308155819.20598-7-pbonzini@redhat.com>
|
|
|
c7c90d |
Patchwork-id: 79192
|
|
|
c7c90d |
O-Subject: [RHEL7.5 qemu-kvm-rhev PATCH 6/6] address_space_rw: address_space_to_flatview needs RCU lock
|
|
|
c7c90d |
Bugzilla: 1554930
|
|
|
c7c90d |
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
|
|
|
c7c90d |
RH-Acked-by: Thomas Huth <thuth@redhat.com>
|
|
|
c7c90d |
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
|
|
|
c7c90d |
|
|
|
c7c90d |
address_space_rw is calling address_space_to_flatview but it can
|
|
|
c7c90d |
be called outside the RCU lock. To fix it, transform flatview_rw
|
|
|
c7c90d |
into address_space_rw, since flatview_rw is otherwise unused.
|
|
|
c7c90d |
|
|
|
c7c90d |
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
|
|
|
c7c90d |
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
c7c90d |
(cherry pick from commit db84fd973eba3f1e121416dcab73a4e8a60f2526)
|
|
|
c7c90d |
|
|
|
c7c90d |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
c7c90d |
---
|
|
|
c7c90d |
exec.c | 28 ++++++++++------------------
|
|
|
c7c90d |
1 file changed, 10 insertions(+), 18 deletions(-)
|
|
|
c7c90d |
|
|
|
c7c90d |
diff --git a/exec.c b/exec.c
|
|
|
c7c90d |
index 58ad24b..12ec761 100644
|
|
|
c7c90d |
--- a/exec.c
|
|
|
c7c90d |
+++ b/exec.c
|
|
|
c7c90d |
@@ -3045,24 +3045,6 @@ static MemTxResult flatview_read(FlatView *fv, hwaddr addr,
|
|
|
c7c90d |
addr1, l, mr);
|
|
|
c7c90d |
}
|
|
|
c7c90d |
|
|
|
c7c90d |
-static MemTxResult flatview_rw(FlatView *fv, hwaddr addr, MemTxAttrs attrs,
|
|
|
c7c90d |
- uint8_t *buf, int len, bool is_write)
|
|
|
c7c90d |
-{
|
|
|
c7c90d |
- if (is_write) {
|
|
|
c7c90d |
- return flatview_write(fv, addr, attrs, (uint8_t *)buf, len);
|
|
|
c7c90d |
- } else {
|
|
|
c7c90d |
- return flatview_read(fv, addr, attrs, (uint8_t *)buf, len);
|
|
|
c7c90d |
- }
|
|
|
c7c90d |
-}
|
|
|
c7c90d |
-
|
|
|
c7c90d |
-MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
|
|
|
c7c90d |
- MemTxAttrs attrs, uint8_t *buf,
|
|
|
c7c90d |
- int len, bool is_write)
|
|
|
c7c90d |
-{
|
|
|
c7c90d |
- return flatview_rw(address_space_to_flatview(as),
|
|
|
c7c90d |
- addr, attrs, buf, len, is_write);
|
|
|
c7c90d |
-}
|
|
|
c7c90d |
-
|
|
|
c7c90d |
MemTxResult address_space_read_full(AddressSpace *as, hwaddr addr,
|
|
|
c7c90d |
MemTxAttrs attrs, uint8_t *buf, int len)
|
|
|
c7c90d |
{
|
|
|
c7c90d |
@@ -3096,6 +3078,16 @@ MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
|
|
|
c7c90d |
return result;
|
|
|
c7c90d |
}
|
|
|
c7c90d |
|
|
|
c7c90d |
+MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
|
|
|
c7c90d |
+ uint8_t *buf, int len, bool is_write)
|
|
|
c7c90d |
+{
|
|
|
c7c90d |
+ if (is_write) {
|
|
|
c7c90d |
+ return address_space_write(as, addr, attrs, buf, len);
|
|
|
c7c90d |
+ } else {
|
|
|
c7c90d |
+ return address_space_read_full(as, addr, attrs, buf, len);
|
|
|
c7c90d |
+ }
|
|
|
c7c90d |
+}
|
|
|
c7c90d |
+
|
|
|
c7c90d |
void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
|
|
|
c7c90d |
int len, int is_write)
|
|
|
c7c90d |
{
|
|
|
c7c90d |
--
|
|
|
c7c90d |
1.8.3.1
|
|
|
c7c90d |
|