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c3dc52fb3c
Don't add KERNEL_TESTING_PATCHVER yet as there are some issues with it. On TP-Link Archer C2300 serial console seems to stop working after preinit: > Press the [f] key and hit [enter] to enter failsafe mode > Press the [1], [2], [3] or [4] key and hit [enter] to select the de� On Netgear R8000P XHCI causes external abort: [ 2.139586] Internal error: synchronous external abort: 0000000096000210 [#1] SMP [ 2.147212] Modules linked in: xhci_plat_hcd(+) xhci_hcd ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug(O) usbcore nls_base usb_common crc32c_generic [ 2.164774] CPU: 0 PID: 358 Comm: kmodloader Tainted: G O 6.6.22 #0 [ 2.172658] Hardware name: Netgear R8000P (DT) [ 2.177229] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.184395] pc : xhci_gen_setup+0x80/0x34c [xhci_hcd] [ 2.189591] lr : xhci_gen_setup+0x74/0x34c [xhci_hcd] [ 2.194788] sp : ffffffc0815d37b0 [ 2.198194] x29: ffffffc0815d37b0 x28: ffffff8002000000 x27: ffffff8001172d88 [ 2.205540] x26: ffffff8002000000 x25: 0000000000000000 x24: ffffffc078b603c0 [ 2.212888] x23: ffffffc078b2a008 x22: ffffff8001172c10 x21: ffffff8002000000 [ 2.220235] x20: ffffff8002000000 x19: ffffff8002000250 x18: 0000000000000000 [ 2.227582] x17: 626d756e20737562 x16: 2064656e67697373 x15: ffffffffffffffff [ 2.234929] x14: ffffff80019e9915 x13: ffffff80019e9913 x12: 00000000ffffffea [ 2.242276] x11: 00000000ffffefff x10: 0000000000000062 x9 : 00000000ffffffd0 [ 2.246760] bcm63138_nand ff801800.nand-controller: timeout waiting for command 0x4 [ 2.249623] x8 : 0000000000000073 x7 : ffffffc0815d37c0 x6 : 0000000000000075 [ 2.257513] bcm63138_nand ff801800.nand-controller: intfc status c00000e0 [ 2.264855] x5 : 0000000000000081 x4 : 0000000000000000 x3 : ffffff8001b61800 [ 2.279193] x2 : ffffffc080b5d000 x1 : ffffff80020003a8 x0 : ffffff8002000398 [ 2.286540] Call trace: [ 2.289048] xhci_gen_setup+0x80/0x34c [xhci_hcd] Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
31 lines
933 B
Diff
31 lines
933 B
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Thu, 12 Aug 2021 11:52:42 +0200
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Subject: [PATCH] arm64: don't issue HVC on boot
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Broadcom's CFE loader seems to miss setting SCR_EL3.HCE which results in
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generating an UNDEF and kernel panic on the first HVC.
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HVC gets issued by kernels 5.12+ while booting, by kexec and KVM. Until
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someone finds a workaround we have to avoid all above.
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Workarounds: 0c93df9622d4 ("arm64: Initialise as nVHE before switching to VHE")
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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---
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arch/arm64/kernel/hyp-stub.S | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/arm64/kernel/hyp-stub.S
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+++ b/arch/arm64/kernel/hyp-stub.S
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@@ -252,7 +252,7 @@ SYM_FUNC_START(finalise_el2)
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b.ne 1f
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mov x0, #HVC_FINALISE_EL2
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- hvc #0
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+// hvc #0
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1:
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ret
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SYM_FUNC_END(finalise_el2)
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