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Re: [Qemu-devel] [PATCH] Move RAMBlock and ram_list to ram_addr.h
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH] Move RAMBlock and ram_list to ram_addr.h |
Date: |
Mon, 17 Aug 2015 09:19:14 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
* Peter Crosthwaite (address@hidden) wrote:
> Is there a functional reason for making this change, or pure
> organisational? Either way the patch is ok, I'm just looking for the
> motivation as this stuff did pop up in the multi-arch refactorings at
> one stage and I did think about moving it. Can we add a one-liner to
> commit message?
Purely organisational; Paolo asked for it in reply to one of my other
patches, and it was simple enough.
It also makes sense, cpu-all.h is a bit of a dumping ground.
Dave
> Regards,
> Peter
>
> On Fri, Aug 14, 2015 at 3:25 AM, Dr. David Alan Gilbert (git)
> <address@hidden> wrote:
> > From: "Dr. David Alan Gilbert" <address@hidden>
> >
> > Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> > ---
> > include/exec/cpu-all.h | 41 -----------------------------------------
> > include/exec/ram_addr.h | 40 ++++++++++++++++++++++++++++++++++++++++
> > 2 files changed, 40 insertions(+), 41 deletions(-)
> >
> > diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
> > index ea6a9a6..175f376 100644
> > --- a/include/exec/cpu-all.h
> > +++ b/include/exec/cpu-all.h
> > @@ -273,44 +273,6 @@ CPUArchState *cpu_copy(CPUArchState *env);
> >
> > #if !defined(CONFIG_USER_ONLY)
> >
> > -/* memory API */
> > -
> > -typedef struct RAMBlock RAMBlock;
> > -
> > -struct RAMBlock {
> > - struct rcu_head rcu;
> > - struct MemoryRegion *mr;
> > - uint8_t *host;
> > - ram_addr_t offset;
> > - ram_addr_t used_length;
> > - ram_addr_t max_length;
> > - void (*resized)(const char*, uint64_t length, void *host);
> > - uint32_t flags;
> > - /* Protected by iothread lock. */
> > - char idstr[256];
> > - /* RCU-enabled, writes protected by the ramlist lock */
> > - QLIST_ENTRY(RAMBlock) next;
> > - int fd;
> > -};
> > -
> > -static inline void *ramblock_ptr(RAMBlock *block, ram_addr_t offset)
> > -{
> > - assert(offset < block->used_length);
> > - assert(block->host);
> > - return (char *)block->host + offset;
> > -}
> > -
> > -typedef struct RAMList {
> > - QemuMutex mutex;
> > - /* Protected by the iothread lock. */
> > - unsigned long *dirty_memory[DIRTY_MEMORY_NUM];
> > - RAMBlock *mru_block;
> > - /* RCU-enabled, writes protected by the ramlist lock. */
> > - QLIST_HEAD(, RAMBlock) blocks;
> > - uint32_t version;
> > -} RAMList;
> > -extern RAMList ram_list;
> > -
> > /* Flags stored in the low bits of the TLB virtual address. These are
> > defined so that fast path ram access is all zeros. */
> > /* Zero if TLB entry is valid. */
> > @@ -323,9 +285,6 @@ extern RAMList ram_list;
> >
> > void dump_exec_info(FILE *f, fprintf_function cpu_fprintf);
> > void dump_opcount_info(FILE *f, fprintf_function cpu_fprintf);
> > -ram_addr_t last_ram_offset(void);
> > -void qemu_mutex_lock_ramlist(void);
> > -void qemu_mutex_unlock_ramlist(void);
> > #endif /* !CONFIG_USER_ONLY */
> >
> > int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
> > diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
> > index c113f21..c400a75 100644
> > --- a/include/exec/ram_addr.h
> > +++ b/include/exec/ram_addr.h
> > @@ -22,6 +22,46 @@
> > #ifndef CONFIG_USER_ONLY
> > #include "hw/xen/xen.h"
> >
> > +typedef struct RAMBlock RAMBlock;
> > +
> > +struct RAMBlock {
> > + struct rcu_head rcu;
> > + struct MemoryRegion *mr;
> > + uint8_t *host;
> > + ram_addr_t offset;
> > + ram_addr_t used_length;
> > + ram_addr_t max_length;
> > + void (*resized)(const char*, uint64_t length, void *host);
> > + uint32_t flags;
> > + /* Protected by iothread lock. */
> > + char idstr[256];
> > + /* RCU-enabled, writes protected by the ramlist lock */
> > + QLIST_ENTRY(RAMBlock) next;
> > + int fd;
> > +};
> > +
> > +static inline void *ramblock_ptr(RAMBlock *block, ram_addr_t offset)
> > +{
> > + assert(offset < block->used_length);
> > + assert(block->host);
> > + return (char *)block->host + offset;
> > +}
> > +
> > +typedef struct RAMList {
> > + QemuMutex mutex;
> > + /* Protected by the iothread lock. */
> > + unsigned long *dirty_memory[DIRTY_MEMORY_NUM];
> > + RAMBlock *mru_block;
> > + /* RCU-enabled, writes protected by the ramlist lock. */
> > + QLIST_HEAD(, RAMBlock) blocks;
> > + uint32_t version;
> > +} RAMList;
> > +extern RAMList ram_list;
> > +
> > +ram_addr_t last_ram_offset(void);
> > +void qemu_mutex_lock_ramlist(void);
> > +void qemu_mutex_unlock_ramlist(void);
> > +
> > ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
> > bool share, const char *mem_path,
> > Error **errp);
> > --
> > 2.4.3
> >
> >
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK