On 08/26/2015 12:11 AM, Stefan Hajnoczi wrote:
On Fri, Aug 14, 2015 at 10:52:03PM +0800, Xiao Guangrong wrote:
@@ -257,14 +258,91 @@ static void build_nfit_table(GSList *device_list, char
*buf)
}
}
+struct dsm_buffer {
+/* RAM page. */
+uint32_t handle;
+uint8_t
On Fri, Aug 14, 2015 at 10:52:03PM +0800, Xiao Guangrong wrote:
@@ -257,14 +258,91 @@ static void build_nfit_table(GSList *device_list, char
*buf)
}
}
+struct dsm_buffer {
+/* RAM page. */
+uint32_t handle;
+uint8_t arg0[16];
+uint32_t arg1;
+uint32_t arg2;
This memory range is used to transfer data between ACPI in guest and Qemu,
it occupies two pages:
- one is RAM-based used to save the input info of _DSM method and Qemu reuse
it store output info
- another one is MMIO-based, ACPI write data to this page to transfer the
control to Qemu
