Hi Himadri,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc1 next-20190726]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Himadri-Pandya/hv_sock-use-HV_HYP_PAGE_SIZE-instead-of-PAGE_SIZE_4K/20190726-085229
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

>> net/vmw_vsock/hyperv_transport.c:58:28: error: 'HV_HYP_PAGE_SIZE' undeclared here (not in a function); did you mean 'HV_MESSAGE_SIZE'?
    #define HVS_SEND_BUF_SIZE (HV_HYP_PAGE_SIZE - sizeof(struct vmpipe_proto_header))
                               ^
>> net/vmw_vsock/hyperv_transport.c:65:10: note: in expansion of macro 'HVS_SEND_BUF_SIZE'
     u8 data[HVS_SEND_BUF_SIZE];
             ^~~~~~~~~~~~~~~~~
   In file included from include/linux/list.h:9:0,
                    from include/linux/module.h:9,
                    from net/vmw_vsock/hyperv_transport.c:11:
   net/vmw_vsock/hyperv_transport.c: In function 'hvs_open_connection':
>> include/linux/kernel.h:845:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:921:27: note: in expansion of macro '__careful_cmp'
    #define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >)
                              ^~~~~~~~~~~~~
>> net/vmw_vsock/hyperv_transport.c:390:12: note: in expansion of macro 'max_t'
      sndbuf = max_t(int, sk->sk_sndbuf, RINGBUFFER_HVS_SND_SIZE);
               ^~~~~
>> include/linux/kernel.h:845:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:913:27: note: in expansion of macro '__careful_cmp'
    #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
                              ^~~~~~~~~~~~~
>> net/vmw_vsock/hyperv_transport.c:391:12: note: in expansion of macro 'min_t'
      sndbuf = min_t(int, sndbuf, RINGBUFFER_HVS_MAX_SIZE);
               ^~~~~
>> include/linux/kernel.h:845:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:921:27: note: in expansion of macro '__careful_cmp'
    #define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >)
                              ^~~~~~~~~~~~~
   net/vmw_vsock/hyperv_transport.c:393:12: note: in expansion of macro 'max_t'
      rcvbuf = max_t(int, sk->sk_rcvbuf, RINGBUFFER_HVS_RCV_SIZE);
               ^~~~~
>> include/linux/kernel.h:845:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:913:27: note: in expansion of macro '__careful_cmp'
    #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
                              ^~~~~~~~~~~~~
   net/vmw_vsock/hyperv_transport.c:394:12: note: in expansion of macro 'min_t'
      rcvbuf = min_t(int, rcvbuf, RINGBUFFER_HVS_MAX_SIZE);
               ^~~~~
   net/vmw_vsock/hyperv_transport.c: In function 'hvs_stream_enqueue':
>> include/linux/kernel.h:845:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:913:27: note: in expansion of macro '__careful_cmp'
    #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
                              ^~~~~~~~~~~~~
   net/vmw_vsock/hyperv_transport.c:681:14: note: in expansion of macro 'min_t'
      to_write = min_t(ssize_t, to_write, HVS_SEND_BUF_SIZE);
                 ^~~~~

vim +58 net/vmw_vsock/hyperv_transport.c

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