From 7a9fd716c7bd585b13e7e48e62b577fd4c675faa Mon Sep 17 00:00:00 2001 From: Maurice Ma 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 Signed-off-by: Matt Fleming Cc: Zhang Rui Cc: Matthew Garrett Link: http://lkml.kernel.org/r/1318330333-4617-1-git-send-email-matt@console-pimps.org Signed-off-by: Ingo Molnar --- 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 37718f0f053d5..d2376eb7231af 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; -- 2.39.5