On 2/1/2016 1:07 PM, Andrew Cooper wrote:
On 01/02/16 07:42, Corneliu ZUZU wrote:
The X86 domain structure already occupied PAGE_SIZE (4096).
Looking @ the memory layout of the structure, we could see that
overall most was occupied by (used the pahole tool on domain.o):
* sizeof(domain.arch) = sizeof(arch_domain) = 3328 bytes.
* sizeof(domain.arch.hvm_domain) = 2224 bytes.
* sizeof(domain.arch.hvm_domain.pl_time) = 1088 bytes.
This patch attempts to free some space, by making the pl_time
field in hvm_domain dynamically allocated.
We xzalloc/xfree it @ hvm_domain_initialise/hvm_domain_destroy.
After this change, the domain structure shrunk w/ 1152 bytes (>1K!).
Signed-off-by: Corneliu ZUZU <cz...@bitdefender.com>
Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com>
Thankyou for doing this - it is exactly the kind of change I had in mind.
~Andrew
Glad to hear that and thank you for the prompt review :) I really needed
this for another patch.
Corneliu.
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