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Saurabh Sengar 3d6af30f17 x86/hyperv: Use per cpu initial stack for vtl context 
[ Upstream commit 2b4b90e053a29057fb05ba81acce26bddce8d404 ]

Currently, the secondary CPUs in Hyper-V VTL context lack support for
parallel startup. Therefore, relying on the single initial_stack fetched
from the current task structure suffices for all vCPUs.

However, common initial_stack risks stack corruption when parallel startup
is enabled. In order to facilitate parallel startup, use the initial_stack
from the per CPU idle thread instead of the current task.

Fixes: 3be1bc2fe9 ("x86/hyperv: VTL support for Hyper-V")
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1709452896-13342-1-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1709452896-13342-1-git-send-email-ssengar@linux.microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-03-26 18:20:06 -04:00
..
Kconfig x86/hyperv: Use per cpu initial stack for vtl context 2024-03-26 18:20:06 -04:00
Makefile Drivers: hv: Move Hyper-V extended capability check to arch neutral code 2021-06-05 10:22:34 +00:00
channel.c Drivers: hv: vmbus: Introduce {lock,unlock}_requestor() 2022-04-25 15:51:13 +00:00
channel_mgmt.c Drivers: hv: vmbus: Fix vmbus_wait_for_unload() to scan present CPUs 2023-05-23 18:53:16 +00:00
connection.c hyperv-next for v6.6 2023-09-04 11:26:29 -07:00
hv.c x86/hyperv: Remove hv_isolation_type_en_snp 2023-08-25 00:04:57 +00:00
hv_balloon.c hyperv-next for v6.6 2023-09-04 11:26:29 -07:00
hv_common.c hyperv-next for v6.6 2023-09-04 11:26:29 -07:00
hv_debugfs.c hv_debugfs: Make hv_debug_root static 2020-04-04 17:47:43 +01:00
hv_fcopy.c Drivers: hv: remove duplicate word in a comment 2022-09-05 16:28:40 +00:00
hv_kvp.c Drivers: hv: Fix syntax errors in comments 2022-06-08 12:26:28 +00:00
hv_snapshot.c hv_utils: Add comment about max VMbus packet size in VSS driver 2022-02-18 13:08:18 +00:00
hv_trace.c
…
hv_trace.h Drivers: hv: vmbus: Drivers: hv: vmbus: Introduce CHANNELMSG_MODIFYCHANNEL_RESPONSE 2021-04-18 13:03:11 +00:00
hv_trace_balloon.h
…
hv_util.c Drivers: hv: Make remove callback of hyperv driver void returned 2023-01-17 13:41:27 +00:00
hv_utils_transport.c Drivers: hv: utils: Make use of the helper macro LIST_HEAD() 2022-02-09 14:33:21 +00:00
hv_utils_transport.h
…
hyperv_vmbus.h Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the paravisor 2023-08-25 00:04:57 +00:00
ring_buffer.c Drivers: hv: vmbus: Remove second way of mapping ring buffers 2023-04-17 19:19:04 +00:00
vmbus_drv.c Drivers: hv: vmbus: Don't dereference ACPI root object handle 2023-08-22 01:18:32 +00:00