diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-08-21 22:38:50 +0400 |
|---|---|---|
| committer | Minda Chen <minda.chen@starfivetech.com> | 2023-11-06 14:24:47 +0300 |
| commit | 7e2ed03be9e3e4206dd950fecb7d1b8e0bf5fa70 (patch) | |
| tree | b7d2c064e270f27834971845255202cb022afcd3 /arch/x86 | |
| parent | d8902607cd38f270dd1ae41bfe301836970189d1 (diff) | |
| download | linux-7e2ed03be9e3e4206dd950fecb7d1b8e0bf5fa70.tar.xz | |
random: Make it work on rt
Delegate the random insertion to the forced threaded interrupt
handler. Store the return IP of the hard interrupt handler in the irq
descriptor and feed it into the random generator as a source of
entropy.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/cpu/mshyperv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index e095c28d27ae..ec01843cb9f1 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -75,11 +75,12 @@ void hv_remove_vmbus_handler(void) DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_stimer0) { struct pt_regs *old_regs = set_irq_regs(regs); + u64 ip = regs ? instruction_pointer(regs) : 0; inc_irq_stat(hyperv_stimer0_count); if (hv_stimer0_handler) hv_stimer0_handler(); - add_interrupt_randomness(HYPERV_STIMER0_VECTOR, 0); + add_interrupt_randomness(HYPERV_STIMER0_VECTOR, 0, ip); ack_APIC_irq(); set_irq_regs(old_regs); |