But QEMU may use other firmware/payload than SeaBIOS which might
require less than 1 MB of RAM.
On Thu, Aug 9, 2012 at 10:15 AM, Markus Armbruster arm...@redhat.com wrote:
Kevin O'Connor ke...@koconnor.net writes:
On Wed, Aug 08, 2012 at 01:50:13PM +0200, Markus Armbruster wrote:
Watch this:
On Tue, Aug 07, 2012 at 05:45:07PM +0200, Gerd Hoffmann wrote:
Hi,
This pull updates seabios in qemu to the latest bits from seabios
master, so the upcoming 1.2 qemu release gets all the new shiny
stuff added recently. I'd like to have a new seabios release for
inclusion into qemu 1.2
On 08/09/2012 02:57 PM, Gerd Hoffmann wrote:
Use kvmclock for tsc calibration when running on kvm. Without this the
tsc frequency calibrated by seabios can be *way* off in case the virtual
machine is booted on a loaded host. I've seen seabios calibrating 27
instead of ca. 2800 MHz, resulting
No, I am not.
But I believe QEMU does have the functionality to load an arbitrary firmware.
So the firmware doesn't necessarily have to be SeaBIOS.
Don't know if its possible to make QEMU use an UEFI or OpenFirmware
image instead, or if such an image exists.
On Thu, Aug 9, 2012 at 2:59 PM, Peter
Hi,
+u64 kvm_tsc_khz(void)
+{
+u32 eax, ebx, ecx, edx, msr;
+struct pvclock_vcpu_time_info time;
+u32 addr = (u32)(time);
+u64 khz;
+
+/* check presence and figure msr number */
+cpuid(KVM_CPUID_FEATURES, eax, ebx, ecx, edx);
+if (eax
On 08/09/2012 05:12 PM, Gerd Hoffmann wrote:
Hi,
er, the documentation says 4 bytes (so stack alignment works). I
distinctly remember having a large alignment requirement so we don't
cross a page or slot boundary... something's wrong here.
case MSR_KVM_SYSTEM_TIME: {
[ ... ]
Hi,
So what do you suggest? The options I see are:
(1) Use this patch (with alignment issue fixed of course).
(2) Do a full kvmclock implementation. Feels a bit like overkill.
(3) SeaBIOS can fallback to the PIT for timing on machines which
have no TSC. We could do that too
On 08/09/2012 05:18 PM, Gerd Hoffmann wrote:
Hi,
So what do you suggest? The options I see are:
(1) Use this patch (with alignment issue fixed of course).
(2) Do a full kvmclock implementation. Feels a bit like overkill.
(3) SeaBIOS can fallback to the PIT for timing on machines
On 08/09/2012 04:57 PM, Gerd Hoffmann wrote:
Hi,
+u64 kvm_tsc_khz(void)
+{
+u32 eax, ebx, ecx, edx, msr;
+struct pvclock_vcpu_time_info time;
+u32 addr = (u32)(time);
+u64 khz;
+
+/* check presence and figure msr number */
+cpuid(KVM_CPUID_FEATURES, eax, ebx,
It should be kHz not khz.
-msr, (u32)khz / 1000);
+msr, (u32)kHz / 1000);
On Thu, Aug 9, 2012 at 2:53 PM, Avi Kivity a...@redhat.com wrote:
On 08/09/2012 02:57 PM, Gerd Hoffmann wrote:
Use kvmclock for tsc calibration when running on kvm. Without this the
tsc
On Thu, Aug 09, 2012 at 05:01:34PM +0300, Avi Kivity wrote:
On 08/09/2012 04:57 PM, Gerd Hoffmann wrote:
Hi,
+u64 kvm_tsc_khz(void)
+{
+u32 eax, ebx, ecx, edx, msr;
+struct pvclock_vcpu_time_info time;
+u32 addr = (u32)(time);
+u64 khz;
+
+/* check
On Thu, Aug 09, 2012 at 03:53:24PM +0300, Avi Kivity wrote:
On 08/09/2012 02:57 PM, Gerd Hoffmann wrote:
Use kvmclock for tsc calibration when running on kvm. Without this the
tsc frequency calibrated by seabios can be *way* off in case the virtual
machine is booted on a loaded host. I've
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