From e9a9eca517d4cd94e816538efc400257e34bc63e Mon Sep 17 00:00:00 2001 From: Maurice Ma <maurice.ma@intel.com> Date: Tue, 11 Oct 2011 11:52:13 +0100 Subject: [PATCH] x86, efi: Convert efi_phys_get_time() args to physical addresses Because callers of efi_phys_get_time() pass virtual stack addresses as arguments, we need to find their corresponding physical addresses and when calling GetTime() in physical mode. Without this patch the following line is printed on boot, "Oops: efitime: can't read time!" Signed-off-by: Maurice Ma <maurice.ma@intel.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matthew Garrett <mjg@redhat.com> Link: http://lkml.kernel.org/r/1318330333-4617-1-git-send-email-matt@console-pimps.org Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/platform/efi/efi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 37718f0f053d..d2376eb7231a 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -238,7 +238,8 @@ static efi_status_t __init phys_efi_get_time(efi_time_t *tm, spin_lock_irqsave(&rtc_lock, flags); efi_call_phys_prelog(); - status = efi_call_phys2(efi_phys.get_time, tm, tc); + status = efi_call_phys2(efi_phys.get_time, virt_to_phys(tm), + virt_to_phys(tc)); efi_call_phys_epilog(); spin_unlock_irqrestore(&rtc_lock, flags); return status; -- GitLab