git: f852f4f7b6f1 - stable/14 - EC2: Set PCIe eject timeout to 0

The branch stable/14 has been updated by cperciva:

URL: https://cgit.FreeBSD.org/src/commit/?id=f852f4f7b6f1666b09b16dba4aaab7acdb49980d

commit f852f4f7b6f1666b09b16dba4aaab7acdb49980d
Author:     Colin Percival <cperciva@FreeBSD.org>
AuthorDate: 2025-03-31 04:11:23 +0000
Commit:     Colin Percival <cperciva@FreeBSD.org>
CommitDate: 2025-04-16 03:18:03 +0000

    EC2: Set PCIe eject timeout to 0
    
    Since PCIe device detaching is done via API, there is no opportunity
    to "press the attention button a second time" and thus the 5 second
    timeout mandated by PCIe serves no purpose.
    
    MFC after:      2 weeks
    Sponsored by:   Amazon
    
    (cherry picked from commit 80febaa1714e897d67a8217edc305a0e81498a6f)
---
 release/tools/ec2.conf | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/release/tools/ec2.conf b/release/tools/ec2.conf
index 3675736ab986..2856068459c3 100644
--- a/release/tools/ec2.conf
+++ b/release/tools/ec2.conf
@@ -79,6 +79,12 @@ ec2_common() {
 	# historical "nvd" driver.
 	echo 'hw.nvme.use_nvd="0"' >> ${DESTDIR}/boot/loader.conf
 
+	# Reduce the timeout for PCIe Eject ("hotunplug") requests.  PCIe
+	# mandates a 5 second timeout to allow someone to cancel the eject
+	# by pressing the "Attention button" a second time, but in the EC2
+	# environment this delay serves no purpose.
+	echo 'hw.pci.pcie_hp_detach_timeout="0"' >> ${DESTDIR}/boot/loader.conf
+
 	# Disable KbdInteractiveAuthentication according to EC2 requirements.
 	sed -i '' -e \
 		's/^#KbdInteractiveAuthentication yes/KbdInteractiveAuthentication no/' \