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f68aa100d8
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Juergen Gross f68aa100d8 xen: reset legacy rtc flag for PV domU 
A Xen PV guest doesn't have a legacy RTC device, so reset the legacy
RTC flag. Otherwise the following WARN splat will occur at boot:

[    1.333404] WARNING: CPU: 1 PID: 1 at /home/gross/linux/head/drivers/rtc/rtc-mc146818-lib.c:25 mc146818_get_time+0x1be/0x210
[    1.333404] Modules linked in:
[    1.333404] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G        W         5.14.0-rc7-default+ #282
[    1.333404] RIP: e030:mc146818_get_time+0x1be/0x210
[    1.333404] Code: c0 64 01 c5 83 fd 45 89 6b 14 7f 06 83 c5 64 89 6b 14 41 83 ec 01 b8 02 00 00 00 44 89 63 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 <0f> 0b 48 c7 c7 30 0e ef 82 4c 89 e6 e8 71 2a 24 00 48 c7 c0 ff ff
[    1.333404] RSP: e02b:ffffc90040093df8 EFLAGS: 00010002
[    1.333404] RAX: 00000000000000ff RBX: ffffc90040093e34 RCX: 0000000000000000
[    1.333404] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000000000000000d
[    1.333404] RBP: ffffffff82ef0e30 R08: ffff888005013e60 R09: 0000000000000000
[    1.333404] R10: ffffffff82373e9b R11: 0000000000033080 R12: 0000000000000200
[    1.333404] R13: 0000000000000000 R14: 0000000000000002 R15: ffffffff82cdc6d4
[    1.333404] FS:  0000000000000000(0000) GS:ffff88807d440000(0000) knlGS:0000000000000000
[    1.333404] CS:  10000e030 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.333404] CR2: 0000000000000000 CR3: 000000000260a000 CR4: 0000000000050660
[    1.333404] Call Trace:
[    1.333404]  ? wakeup_sources_sysfs_init+0x30/0x30
[    1.333404]  ? rdinit_setup+0x2b/0x2b
[    1.333404]  early_resume_init+0x23/0xa4
[    1.333404]  ? cn_proc_init+0x36/0x36
[    1.333404]  do_one_initcall+0x3e/0x200
[    1.333404]  kernel_init_freeable+0x232/0x28e
[    1.333404]  ? rest_init+0xd0/0xd0
[    1.333404]  kernel_init+0x16/0x120
[    1.333404]  ret_from_fork+0x1f/0x30

Cc: <stable@vger.kernel.org>
Fixes: 8d152e7a5c ("x86/rtc: Replace paravirt rtc check with platform legacy quirk")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20210903084937.19392-3-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-09-15 08:42:03 +02:00
..
alpha libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
arc ARC: fp: set FPU_STATUS.FWE to enable FPU_STATUS update on context switch 2021-08-03 18:58:33 -07:00
arm ARM fixes for 5.14: 2021-08-27 09:00:43 -07:00
arm64 arm64 fix for 5.14 2021-08-26 11:26:00 -07:00
csky Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
h8300 libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
hexagon Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
ia64 libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
m68k libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
microblaze Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
mips TTY/Serial fixes for 5.14-rc5 2021-08-08 10:23:13 -07:00
nds32 nds32: fix up stack guard gap 2021-07-21 15:51:37 +02:00
nios2 Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
openrisc Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
parisc Revert "parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat" 2021-08-29 10:13:32 -07:00
powerpc powerpc fixes for 5.14 #7 2021-08-28 10:40:41 -07:00
riscv RISC-V Fixes for 5.14-rc8 (or 5.14) 2021-08-27 11:04:57 -07:00
s390 s390/pci: fix use after free of zpci_dev 2021-08-18 10:12:42 +02:00
sh libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
sparc Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi (mac80211) 2021-07-30 16:01:36 -07:00
um Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
x86 xen: reset legacy rtc flag for PV domU 2021-09-15 08:42:03 +02:00
xtensa libata-5.14-2021-07-30 2021-07-30 10:56:47 -07:00
.gitignore
Kconfig Kconfig: Introduce ARCH_WANTS_NO_INSTR and CC_HAS_NO_PROFILE_FN_ATTR 2021-06-22 11:07:18 -07:00