Re: [PATCH v2 01/12] kexec: Allow architecture code to opt-out at runtime
From: Eric W. Biederman <hidden>
Date: 2021-11-01 21:12:28
Also in:
kexec, kvm, linux-coco, lkml, stable
Possibly related (same subject, not in this thread)
- 2021-11-02 · Re: [PATCH v2 01/12] kexec: Allow architecture code to opt-out at runtime · Eric W. Biederman <hidden>
- 2021-11-01 · Re: [PATCH v2 01/12] kexec: Allow architecture code to opt-out at runtime · Borislav Petkov <bp@alien8.de>
- 2021-09-13 · [PATCH v2 01/12] kexec: Allow architecture code to opt-out at runtime · Joerg Roedel <joro@8bytes.org>
Borislav Petkov [off-list ref] writes:
On Mon, Sep 13, 2021 at 05:55:52PM +0200, Joerg Roedel wrote:quoted
From: Joerg Roedel <redacted> Allow a runtime opt-out of kexec support for architecture code in case the kernel is running in an environment where kexec is not properly supported yet. This will be used on x86 when the kernel is running as an SEV-ES guest. SEV-ES guests need special handling for kexec to hand over all CPUs to the new kernel. This requires special hypervisor support and handling code in the guest which is not yet implemented. Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Joerg Roedel <redacted> --- include/linux/kexec.h | 1 + kernel/kexec.c | 14 ++++++++++++++ kernel/kexec_file.c | 9 +++++++++ 3 files changed, 24 insertions(+)I guess I can take this through the tip tree along with the next one.
I seem to remember the consensus when this was reviewed that it was unnecessary and there is already support for doing something like this at a more fine grained level so we don't need a new kexec hook. Eric _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization