From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Feng Tang <feng.tang@intel.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, linux-kernel@vger.kernel.org
Subject: EFI runtime-services on x86_64
Date: Fri, 30 Jul 2010 14:58:48 -0600 [thread overview]
Message-ID: <201007301458.50263.bjorn.helgaas@hp.com> (raw)
Hello Feng,
Can you educate me about your commit 772be899bc, "86: Make EFI RTC
function depend on 32bit again"?
It adds "#ifdef CONFIG_X86_32" to avoid using efi_get_time() and
efi_set_rtc_mmss(), but there's no explanation of *why* those services
only work on 32-bit.
Is this an EFI spec limitation? Do the other EFI runtime services
work on 64-bit, since you didn't touch them? Or do we just not use
any of the others?
Is this something that can be fixed, so we *could* use efi_get_time()
on 64-bit if we did some work? What would need to be done?
Bjorn
next reply other threads:[~2010-07-30 20:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-30 20:58 Bjorn Helgaas [this message]
2010-08-02 2:35 ` Feng Tang
2010-08-02 2:42 ` Huang Ying
2010-08-03 21:45 ` Eric W. Biederman
2010-08-03 21:53 ` Matthew Garrett
2010-08-03 21:58 ` Eric W. Biederman
2010-08-03 22:15 ` Matthew Garrett
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