linux/Documentation/powerpc
Sukadev Bhattiprolu 3a43970d55 KVM: PPC: Book3S HV: Implement H_SVM_INIT_ABORT hcall
Implement the H_SVM_INIT_ABORT hcall which the Ultravisor can use to
abort an SVM after it has issued the H_SVM_INIT_START and before the
H_SVM_INIT_DONE hcalls. This hcall could be used when Ultravisor
encounters security violations or other errors when starting an SVM.

Note that this hcall is different from UV_SVM_TERMINATE ucall which
is used by HV to terminate/cleanup an VM that has becore secure.

The H_SVM_INIT_ABORT basically undoes operations that were done
since the H_SVM_INIT_START hcall - i.e page-out all the VM pages back
to normal memory, and terminate the SVM.

(If we do not bring the pages back to normal memory, the text/data
of the VM would be stuck in secure memory and since the SVM did not
go secure, its MSR_S bit will be clear and the VM wont be able to
access its pages even to do a clean exit).

Based on patches and discussion with Paul Mackerras, Ram Pai and
Bharata Rao.

Signed-off-by: Ram Pai <linuxram@linux.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2020-01-17 15:08:31 +11:00
..
bootwrapper.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
cpu_families.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
cpu_features.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
cxl.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
cxlflash.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
dawr-power9.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
dscr.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
eeh-pci-error-recovery.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
elfnote.rst docs: powerpc: Add missing documentation reference 2019-09-17 23:59:34 +10:00
firmware-assisted-dump.rst powerpc/fadump: update documentation about option to release opalcore 2019-09-14 00:04:45 +10:00
hvcs.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
index.rst powerpc/fsl_booke/32: Document KASLR implementation 2019-11-13 19:27:58 +11:00
isa-versions.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
kaslr-booke32.rst powerpc/fsl_booke/32: Document KASLR implementation 2019-11-13 19:27:58 +11:00
mpc52xx.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
pci_iov_resource_on_powernv.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
pmu-ebb.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
ptrace.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
qe_firmware.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
syscall64-abi.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
transactional_memory.rst docs: powerpc: convert docs to ReST and rename to *.rst 2019-07-17 06:57:51 -03:00
ultravisor.rst KVM: PPC: Book3S HV: Implement H_SVM_INIT_ABORT hcall 2020-01-17 15:08:31 +11:00
vcpudispatch_stats.txt powerpc/pseries: Add documentation for vcpudispatch_stats 2019-07-04 22:27:25 +10:00