On 09/05/12 01:27, Gerd Hoffmann wrote:
On 09/02/12 22:42, Kevin O'Connor wrote:
On Tue, Aug 14, 2012 at 07:29:19AM +0200, Gerd Hoffmann wrote:
This patch makes seabios use the acpi pmtimer instead of tsc for
timekeeping. The pmtimer has a fixed frequency and doesn't need
calibration, thus it
Hi,
+u32 pmtimer = inl(ioport);
+return (u64)wraps 24 | pmtimer;
BTW, why is this 24, and if it should be that way, shouldn't the
pmtimer be inl(ioport) 0xff ?
The pmtimer is defined to be 24 bits wide, so the shift is correct.
This is not true in general. It can be either
On 09/02/2012 11:42 PM, Kevin O'Connor wrote:
On Tue, Aug 14, 2012 at 07:29:19AM +0200, Gerd Hoffmann wrote:
This patch makes seabios use the acpi pmtimer instead of tsc for
timekeeping. The pmtimer has a fixed frequency and doesn't need
calibration, thus it doesn't suffer from calibration
On 09/02/12 22:42, Kevin O'Connor wrote:
On Tue, Aug 14, 2012 at 07:29:19AM +0200, Gerd Hoffmann wrote:
This patch makes seabios use the acpi pmtimer instead of tsc for
timekeeping. The pmtimer has a fixed frequency and doesn't need
calibration, thus it doesn't suffer from calibration errors
On Tue, Aug 14, 2012 at 07:29:19AM +0200, Gerd Hoffmann wrote:
This patch makes seabios use the acpi pmtimer instead of tsc for
timekeeping. The pmtimer has a fixed frequency and doesn't need
calibration, thus it doesn't suffer from calibration errors due to a
loaded host machine.
The patch
This patch makes seabios use the acpi pmtimer instead of tsc for
timekeeping. The pmtimer has a fixed frequency and doesn't need
calibration, thus it doesn't suffer from calibration errors due to a
loaded host machine.
[ v2: add CONFIG_PMTIMER ]
Signed-off-by: Gerd Hoffmann kra...@redhat.com
