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authorDavid Gibson <david@gibson.dropbear.id.au>2012-12-03 16:42:14 +0000
committerAlexander Graf <agraf@suse.de>2012-12-14 13:12:57 +0100
commitb162d02e9450201c656edce290f33994a6d2ad33 (patch)
treef92b44cda712d8f3a8a9496f3c7acd2617ea1b73 /target-ppc
parent9e2c12988bebca7b99c0cd064b23fb7ea6643c86 (diff)
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target-ppc: Don't use hwaddr to represent hardware state
The hwaddr type is somewhat vaguely defined as being able to contain bus addresses on the widest possible bus in the system. For that reason it's discouraged for representing specific pieces of persistent hardware state, which should instead use an explicit width type that matches the bits available in real hardware. In particular, because of the possibility that the size of hwaddr might change if different buses are added to the target in future, it's not suitable for use in vm state descriptions for savevm and migration. This patch purges such unwise uses of hwaddr from the ppc target code, which turns out to be just one. The ppcemb_tlb_t struct, used on a number of embedded ppc models to represent a TLB entry contains a hwaddr for the real address field. This patch changes it to be a fixed uint64_t which is suitable enough for all machine types which use this structure. Other uses of hwaddr in CPUPPCState turn out not to be problematic: htab_base and htab_mask are just used for the convenience of the TCG code; the underlying machine state is the SDR1 register, which is stored with a suitable type already. Likewise the mpic_cpu_base field is only used internally and does not represent fundamental hardware state which needs to be saved. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
-rw-r--r--target-ppc/cpu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 5f1dc8b..742d4f8 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -355,7 +355,7 @@ struct ppc6xx_tlb_t {
typedef struct ppcemb_tlb_t ppcemb_tlb_t;
struct ppcemb_tlb_t {
- hwaddr RPN;
+ uint64_t RPN;
target_ulong EPN;
target_ulong PID;
target_ulong size;