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| author | Michael Brown | 2023-02-11 16:07:00 +0100 |
|---|---|---|
| committer | Michael Brown | 2023-02-11 16:11:51 +0100 |
| commit | 3c83843e111ece30d3dfb5143d5e6aed6164d587 (patch) | |
| tree | 157d81c6cb2df8f6d086b9189a40837f79de7565 /src/arch/x86/image/bzimage.c | |
| parent | [eisa] Check for system board presence before probing for slots (diff) | |
| download | ipxe-3c83843e111ece30d3dfb5143d5e6aed6164d587.tar.gz ipxe-3c83843e111ece30d3dfb5143d5e6aed6164d587.tar.xz ipxe-3c83843e111ece30d3dfb5143d5e6aed6164d587.zip | |
[rng] Check for several functioning RTC interrupts
Commit 74222cd ("[rng] Check for functioning RTC interrupt") added a
check that the RTC is capable of generating interrupts via the legacy
PIC, since this mechanism appears to be broken in some Hyper-V virtual
machines.
Experimentation shows that the RTC is sometimes capable of generating
a single interrupt, but will then generate no subsequent interrupts.
This currently causes rtc_entropy_check() to falsely detect that the
entropy gathering mechanism is functional.
Fix by checking for several RTC interrupts before declaring that it is
a functional entropy source.
Reported-by: Andreas Hammarskjöld <junior@2PintSoftware.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch/x86/image/bzimage.c')
0 files changed, 0 insertions, 0 deletions