xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xen/x86: retrieve keyboard shift status flags from hypervisor.

Browse Source 
The xen c/s 25873 allows the hypervisor to retrieve the NUMLOCK flag.
With this patch, the Linux kernel can get the state according to the
data in the BIOS.

Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk
2012-09-21 12:30:35 -04:00
parent a5f9515570
commit ffb8b233c2
2 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/xen/enlighten.c
View File

@@ -1440,11 +1440,19 @@ asmlinkage void __init xen_start_kernel(void)
const struct dom0_vga_console_info *info =
(void *)((char *)xen_start_info +
xen_start_info->console.dom0.info_off);
struct xen_platform_op op = {
.cmd = XENPF_firmware_info,
.interface_version = XENPF_INTERFACE_VERSION,
.u.firmware_info.type = XEN_FW_KBD_SHIFT_FLAGS,
};
xen_init_vga(info, xen_start_info->console.dom0.info_size);
xen_start_info->console.domU.mfn = 0;
xen_start_info->console.domU.evtchn = 0;
if (HYPERVISOR_dom0_op(&op) == 0)
boot_params.kbd_status = op.u.firmware_info.u.kbd_shift_flags;
xen_init_apic();
/* Make sure ACS will be enabled */