On Fri, Jan 29, 2016 at 2:32 PM, Corneliu ZUZU
wrote:
> On 1/29/2016 6:47 PM, Lengyel, Tamas wrote:
>
>
> by leaving there only the x86-specific part, i.e.:
>> struct {
>> uint8_t mov_to_msr_enabled : 1;
>> uint8_t mov_to_msr_extended : 1;
>> } monitor;
On 1/29/2016 7:09 PM, Jan Beulich wrote:
On 29.01.16 at 17:24, wrote:
One could shrink the domain structure by transforming some of its fields
to pointers, e.g. I could transform the pl_time field into a pointer and
dynamically allocate its data when domain_create is called.
Sounds like a reas
On 1/29/2016 6:47 PM, Lengyel, Tamas wrote:
by leaving there only the x86-specific part, i.e.:
struct {
uint8_t mov_to_msr_enabled : 1;
uint8_t mov_to_msr_extended : 1;
} monitor;
and moving the rest directly into the domain str
On 29/01/16 17:09, Jan Beulich wrote:
On 29.01.16 at 17:24, wrote:
>> To investigate I compiled the unaltered domain.c & used the pahole tool
>> (part of dwarves package) to obtain the complete layout of the domain
>> structure (& its members).
>> What I obtained:
>> * sizeof(struct do
>>> On 29.01.16 at 17:24, wrote:
> To investigate I compiled the unaltered domain.c & used the pahole tool
> (part of dwarves package) to obtain the complete layout of the domain
> structure (& its members).
> What I obtained:
> * sizeof(struct domain) is already = 4096 bytes (= PAGE_SIZE)
> by leaving there only the x86-specific part, i.e.:
> struct {
> uint8_t mov_to_msr_enabled : 1;
> uint8_t mov_to_msr_extended : 1;
> } monitor;
>
> and moving the rest directly into the domain structure, i.e. add @ the end
> of struct domain [@ xen/inclu
I'm trying to refactor some arch-specific code into common code and was
surprised to find out that the x86 domain structure already occupies
PAGE_SIZE bytes, couldn't even add an unsigned short field in it w/o
causing a compile-time error.
I'm using the master branch of git://xenbits.xenproject.
