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Sometimes the UEFI memory map changes between GetMemoryMap() and ExitBootServices(), making the MapKey value incorrect. Per the UEFI spec, the memory map should then be fetched again and exiting retried. Signed-off-by: Tom Huibregtse <thuibregtse at xes-inc.com> --- efi/main.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 70 insertions(+), 11 deletions(-) diff --git a/efi/main.c b/efi/main.c index 6a748412..d7fb637e 100644 --- a/efi/main.c +++ b/efi/main.c @@ -1008,16 +1008,81 @@ static in...

I am a UEFI/BIOS developer. We UEFI PXE boot dozens of times per night. We have run into this error more than a couple of times. We have also done thousands of UEFI PXE boots with debug statements to prove that the patch works. From: "Tom Huibregtse via Syslinux" <syslinux at syslinux.org> To: syslinux at syslinux.org Sent: Thursday, June 11, 2020 8:04:06 AM Subject: [syslinux] [PATCH] efi/main: add retry to exit_boot() Sometimes the UEFI memory map changes between GetMemoryMap() and ExitBootServices(), making the MapKey value...

Hi, Le 18/06/2020 ? 22:24, Tom Huibregtse via Syslinux a ?crit?: > I am a UEFI/BIOS developer. We UEFI PXE boot dozens of times per night. We have run into this error more than a couple of times. We have also done thousands of UEFI PXE boots with debug statements to prove that the patch works. <snip> As far as I can tell, the d...