[Qemu-devel] [RFC PATCH 07/56] cpus: Make memsave, pmemsave sizes, addresses unsigned in QAPI/QMP

Markus Armbruster posted 56 patches 8 years, 6 months ago
[Qemu-devel] [RFC PATCH 07/56] cpus: Make memsave, pmemsave sizes, addresses unsigned in QAPI/QMP
Posted by Markus Armbruster 8 years, 6 months ago
Sizes, virtual and physical addresses should use QAPI type 'size'
(uint64_t).  memsave, pmemsave parameters @val, @size are 'int'
(int64_t).  qmp_memsave() and qmp_pmemsave() implicitly convert to
target_ulong or hwaddr.

Change the parameters to 'size'.

Both commands now accept size and address values between 2^63 and
2^64-1.  They accept negative values as before, because that's how the
QObject input visitor works for backward compatibility.

The HMP commands' size parameters remain uint32_t, as HMP args_type
strings can't do uint64_t byte counts: 'l' is signed, and 'o'
multiplies by 2^20.  Their address parameters remain int64_t for the
same reason.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 cpus.c           | 6 +++---
 qapi-schema.json | 5 +++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/cpus.c b/cpus.c
index 9bed61e..8c5ee05 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1947,14 +1947,14 @@ CpuInfoList *qmp_query_cpus(Error **errp)
     return head;
 }
 
-void qmp_memsave(int64_t addr, int64_t size, const char *filename,
+void qmp_memsave(uint64_t addr, uint64_t size, const char *filename,
                  bool has_cpu, int64_t cpu_index, Error **errp)
 {
     FILE *f;
     uint32_t l;
     CPUState *cpu;
     uint8_t buf[1024];
-    int64_t orig_addr = addr, orig_size = size;
+    uint64_t orig_addr = addr, orig_size = size;
 
     if (!has_cpu) {
         cpu_index = 0;
@@ -1994,7 +1994,7 @@ exit:
     fclose(f);
 }
 
-void qmp_pmemsave(int64_t addr, int64_t size, const char *filename,
+void qmp_pmemsave(uint64_t addr, uint64_t size, const char *filename,
                   Error **errp)
 {
     FILE *f;
diff --git a/qapi-schema.json b/qapi-schema.json
index f4a71df..80458fa 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2460,7 +2460,8 @@
 #
 ##
 { 'command': 'memsave',
-  'data': {'val': 'int', 'size': 'int', 'filename': 'str', '*cpu-index': 'int'} }
+  'data': {'val': 'size', 'size': 'size', 'filename': 'str',
+           '*cpu-index': 'int'} }
 
 ##
 # @pmemsave:
@@ -2489,7 +2490,7 @@
 #
 ##
 { 'command': 'pmemsave',
-  'data': {'val': 'int', 'size': 'int', 'filename': 'str'} }
+  'data': {'val': 'size', 'size': 'size', 'filename': 'str'} }
 
 ##
 # @cont:
-- 
2.7.5


Re: [Qemu-devel] [RFC PATCH 07/56] cpus: Make memsave, pmemsave sizes, addresses unsigned in QAPI/QMP
Posted by Dr. David Alan Gilbert 8 years, 6 months ago
* Markus Armbruster (armbru@redhat.com) wrote:
> Sizes, virtual and physical addresses should use QAPI type 'size'
> (uint64_t).  memsave, pmemsave parameters @val, @size are 'int'
> (int64_t).  qmp_memsave() and qmp_pmemsave() implicitly convert to
> target_ulong or hwaddr.
> 
> Change the parameters to 'size'.
> 
> Both commands now accept size and address values between 2^63 and
> 2^64-1.  They accept negative values as before, because that's how the
> QObject input visitor works for backward compatibility.
> 
> The HMP commands' size parameters remain uint32_t, as HMP args_type
> strings can't do uint64_t byte counts: 'l' is signed, and 'o'
> multiplies by 2^20.  Their address parameters remain int64_t for the
> same reason.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  cpus.c           | 6 +++---
>  qapi-schema.json | 5 +++--
>  2 files changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/cpus.c b/cpus.c
> index 9bed61e..8c5ee05 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -1947,14 +1947,14 @@ CpuInfoList *qmp_query_cpus(Error **errp)
>      return head;
>  }
>  
> -void qmp_memsave(int64_t addr, int64_t size, const char *filename,
> +void qmp_memsave(uint64_t addr, uint64_t size, const char *filename,
>                   bool has_cpu, int64_t cpu_index, Error **errp)
>  {
>      FILE *f;
>      uint32_t l;
>      CPUState *cpu;
>      uint8_t buf[1024];
> -    int64_t orig_addr = addr, orig_size = size;
> +    uint64_t orig_addr = addr, orig_size = size;
>  
>      if (!has_cpu) {
>          cpu_index = 0;

a little bit further down is a:
            error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRId64
                             " specified", orig_addr, orig_size);

that PRId64 should be a PRIu64 now

However, other than that;


Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

> @@ -1994,7 +1994,7 @@ exit:
>      fclose(f);
>  }
>  
> -void qmp_pmemsave(int64_t addr, int64_t size, const char *filename,
> +void qmp_pmemsave(uint64_t addr, uint64_t size, const char *filename,
>                    Error **errp)
>  {
>      FILE *f;
> diff --git a/qapi-schema.json b/qapi-schema.json
> index f4a71df..80458fa 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -2460,7 +2460,8 @@
>  #
>  ##
>  { 'command': 'memsave',
> -  'data': {'val': 'int', 'size': 'int', 'filename': 'str', '*cpu-index': 'int'} }
> +  'data': {'val': 'size', 'size': 'size', 'filename': 'str',
> +           '*cpu-index': 'int'} }
>  
>  ##
>  # @pmemsave:
> @@ -2489,7 +2490,7 @@
>  #
>  ##
>  { 'command': 'pmemsave',
> -  'data': {'val': 'int', 'size': 'int', 'filename': 'str'} }
> +  'data': {'val': 'size', 'size': 'size', 'filename': 'str'} }
>  
>  ##
>  # @cont:
> -- 
> 2.7.5
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK

Re: [Qemu-devel] [RFC PATCH 07/56] cpus: Make memsave, pmemsave sizes, addresses unsigned in QAPI/QMP
Posted by Markus Armbruster 8 years, 6 months ago
"Dr. David Alan Gilbert" <dgilbert@redhat.com> writes:

> * Markus Armbruster (armbru@redhat.com) wrote:
>> Sizes, virtual and physical addresses should use QAPI type 'size'
>> (uint64_t).  memsave, pmemsave parameters @val, @size are 'int'
>> (int64_t).  qmp_memsave() and qmp_pmemsave() implicitly convert to
>> target_ulong or hwaddr.
>> 
>> Change the parameters to 'size'.
>> 
>> Both commands now accept size and address values between 2^63 and
>> 2^64-1.  They accept negative values as before, because that's how the
>> QObject input visitor works for backward compatibility.
>> 
>> The HMP commands' size parameters remain uint32_t, as HMP args_type
>> strings can't do uint64_t byte counts: 'l' is signed, and 'o'
>> multiplies by 2^20.  Their address parameters remain int64_t for the
>> same reason.
>> 
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>>  cpus.c           | 6 +++---
>>  qapi-schema.json | 5 +++--
>>  2 files changed, 6 insertions(+), 5 deletions(-)
>> 
>> diff --git a/cpus.c b/cpus.c
>> index 9bed61e..8c5ee05 100644
>> --- a/cpus.c
>> +++ b/cpus.c
>> @@ -1947,14 +1947,14 @@ CpuInfoList *qmp_query_cpus(Error **errp)
>>      return head;
>>  }
>>  
>> -void qmp_memsave(int64_t addr, int64_t size, const char *filename,
>> +void qmp_memsave(uint64_t addr, uint64_t size, const char *filename,
>>                   bool has_cpu, int64_t cpu_index, Error **errp)
>>  {
>>      FILE *f;
>>      uint32_t l;
>>      CPUState *cpu;
>>      uint8_t buf[1024];
>> -    int64_t orig_addr = addr, orig_size = size;
>> +    uint64_t orig_addr = addr, orig_size = size;
>>  
>>      if (!has_cpu) {
>>          cpu_index = 0;
>
> a little bit further down is a:
>             error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRId64
>                              " specified", orig_addr, orig_size);
>
> that PRId64 should be a PRIu64 now

Will fix.

> However, other than that;
>
>
> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Thanks!