Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'efi-urgent-for-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fix from Ard Biesheuvel:
"This works around a shortcoming in the memory acceptation API, which
may apparently hog the CPU for long enough to trigger the softlockup
watchdog.
Note that this only affects confidential VMs running under the Intel
TDX hypervisor, which is why I accepted this for now, but this should
obviously be fixed properly in the future"
* tag 'efi-urgent-for-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi/unaccepted: touch soft lockup during memory accept
+4
+4
drivers/firmware/efi/unaccepted_memory.c
+4
drivers/firmware/efi/unaccepted_memory.c
···
4
4
#include <linux/memblock.h>
5
5
#include <linux/spinlock.h>
6
6
#include <linux/crash_dump.h>
7
+
#include <linux/nmi.h>
7
8
#include <asm/unaccepted_memory.h>
8
9
9
10
/* Protects unaccepted memory bitmap and accepting_list */
···
150
149
}
151
150
152
151
list_del(&range.list);
152
+
153
+
touch_softlockup_watchdog();
154
+
153
155
spin_unlock_irqrestore(&unaccepted_memory_lock, flags);
154
156
}
155
157