https://bugs.kde.org/show_bug.cgi?id=407377
--- Comment #1 from tim4...@bmail.ru --- Related Linux kernel code (from https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/vmwgfx/vmwgfx_msg.h#L56): /drivers/gpu/drm/vmwgfx/vmwgfx_msg.h:56 ``` /** * Hypervisor-specific bi-directional communication channel. Should never * execute on bare metal hardware. The caller must make sure to check for * supported hypervisor before using these macros. * * The last two parameters are both input and output and must be initialized. * * @cmd: [IN] Message Cmd * @in_ebx: [IN] Message Len, through EBX * @in_si: [IN] Input argument through SI, set to 0 if not used * @in_di: [IN] Input argument through DI, set ot 0 if not used * @port_num: [IN] port number + [channel id] * @magic: [IN] hypervisor magic value * @eax: [OUT] value of EAX register * @ebx: [OUT] e.g. status from an HB message status command * @ecx: [OUT] e.g. status from a non-HB message status command * @edx: [OUT] e.g. channel id * @si: [OUT] * @di: [OUT] */ #define VMW_PORT(cmd, in_ebx, in_si, in_di, \ port_num, magic, \ eax, ebx, ecx, edx, si, di) \ ({ \ asm volatile ("inl %%dx, %%eax;" : \ "=a"(eax), \ "=b"(ebx), \ "=c"(ecx), \ "=d"(edx), \ "=S"(si), \ "=D"(di) : \ "a"(magic), \ "b"(in_ebx), \ "c"(cmd), \ "d"(port_num), \ "S"(in_si), \ "D"(in_di) : \ "memory"); \ }) ``` -- You are receiving this mail because: You are watching all bug changes.
