Kernel 5.9

xeno74 · Post by **xeno74** » Sun Aug 09, 2020 5:54 pm

Aneesh Kumar has released a patch because of the X1000 boot issue.

commit 919a177bcdaf1eaeaeecc0d0f50a688629d7b5df
Author: Aneesh Kumar K.V <[email protected]>
Date:   Sun Aug 9 20:37:38 2020 +0530

   powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)

   On p6 and before we should avoid updating UAMOR SPRN. This resulted
   in boot failure on Nemo board.

   Fixes: 269e829f48a0 ("powerpc/book3s64/pkey: Disable pkey on POWER6 and before")
   Reported-by: Christian Zigotzky <[email protected]>
   Signed-off-by: Aneesh Kumar K.V <[email protected]>

diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index 69a6b87f2bb4..b1d091a97611 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -73,12 +73,6 @@ static int scan_pkey_feature(void)
   if (early_radix_enabled())
       return 0;

-    /*
-     * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1
-     */
-    if (!early_cpu_has_feature(CPU_FTR_ARCH_206))
-        return 0;
-
   ret = of_scan_flat_dt(dt_scan_storage_keys, &pkeys_total);
   if (ret == 0) {
       /*
@@ -124,6 +118,12 @@ void __init pkey_early_init_devtree(void)
            __builtin_popcountl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)
               != (sizeof(u64) * BITS_PER_BYTE));

+    /*
+     * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1
+     */
+    if (!early_cpu_has_feature(CPU_FTR_ARCH_206))
+        return;
+
   /* scan the device tree for pkey feature */
   pkeys_total = scan_pkey_feature();
   if (!pkeys_total)

If this patch works then we can release the alpha3 tomorrow.

xeno74 · Post by **xeno74** » Mon Aug 10, 2020 12:33 pm

X1000: There were some other problems like not displaying boot messages or only one CPU core so Aneesh has released a new patch.

Code: Select all

On p6 and before we should avoid updating UAMOR SPRN. This resulted
in boot failure on Nemo board.

Fixes: 269e829f48a0 ("powerpc/book3s64/pkey: Disable pkey on POWER6 and before")
Reported-by: Christian Zigotzky <[email protected]>
Signed-off-by: Aneesh Kumar K.V <[email protected]>
---
 arch/powerpc/mm/book3s64/hash_utils.c |  5 ++---
 arch/powerpc/mm/book3s64/pkeys.c      | 12 ++++++------
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 1478fceeb683..1da9dbba9217 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -1115,9 +1115,8 @@ void hash__early_init_mmu_secondary(void)
 			&& cpu_has_feature(CPU_FTR_HVMODE))
 		tlbiel_all();
 
-#ifdef CONFIG_PPC_MEM_KEYS
-	mtspr(SPRN_UAMOR, default_uamor);
-#endif
+	if (IS_ENABLED(CONFIG_PPC_MEM_KEYS) && mmu_has_feature(MMU_FTR_PKEY))
+		mtspr(SPRN_UAMOR, default_uamor);
 }
 #endif /* CONFIG_SMP */
 
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index 69a6b87f2bb4..b1d091a97611 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -73,12 +73,6 @@ static int scan_pkey_feature(void)
 	if (early_radix_enabled())
 		return 0;
 
-	/*
-	 * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1
-	 */
-	if (!early_cpu_has_feature(CPU_FTR_ARCH_206))
-		return 0;
-
 	ret = of_scan_flat_dt(dt_scan_storage_keys, &pkeys_total);
 	if (ret == 0) {
 		/*
@@ -124,6 +118,12 @@ void __init pkey_early_init_devtree(void)
 		     __builtin_popcountl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)
 				!= (sizeof(u64) * BITS_PER_BYTE));
 
+	/*
+	 * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1
+	 */
+	if (!early_cpu_has_feature(CPU_FTR_ARCH_206))
+		return;
+
 	/* scan the device tree for pkey feature */
 	pkeys_total = scan_pkey_feature();
 	if (!pkeys_total)
-- 
2.26.2

xeno74 · Post by **xeno74** » Mon Aug 10, 2020 1:55 pm

Hi All,

Here is the third alpha of kernel 5.9 for testing.

New:

Download: linux-image-5.9-alpha3-X1000_X5000.tar.gz

Please test the kernels.

Thanks,
Christian

xeno74 · Post by **xeno74** » Tue Aug 11, 2020 3:59 pm

Hi All,

Here is the alpha4 for testing.

New:

X1000: pkeys-v2.patch for solving the boot issue (Thanks to Aneesh Kumar)
Linux Git log
Phoronix articles, reviews and news stories covering Linux 5.9

Download: linux-image-5.9-alpha4-X1000_X5000.tar.gz

Please test the kernels.

Thanks,
Christian

xeno74 · Post by **xeno74** » Wed Aug 12, 2020 4:42 pm

Hi All,

I released the alpha5 for testing today.

New:

Virtual e5500 QEMU machine with a VirtIO-GPU: virtio_gpu patch for solving the swiotlb issue
Linux Git log
Phoronix articles, reviews and news stories covering Linux 5.9

Download: linux-image-5.9-alpha5-X1000_X5000.tar.gz

Please test the kernels.

Thanks,
Christian

xeno74 · Post by **xeno74** » Fri Aug 14, 2020 8:56 pm

FYI:

Code: Select all

[GIT PULL] Please pull powerpc/linux.git powerpc-5.9-2 tag

Hi Linus,

Please pull a powerpc fix for 5.9:

The following changes since commit 7b9de97711225559af213dc52b6ea883ef1ea7a8:

 powerpc/ptrace: Fix build error in pkey_get() (2020-08-07 18:27:26 -0700)

are available in the git repository at:

 https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git tags/powerpc-5.9-2

for you to fetch changes up to 6553fb799f601497ca0703682e2aff131197dc5c:

 powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000) (2020-08-10 23:07:21 +1000)

- ------------------------------------------------------------------
powerpc fixes for 5.9 #2

One fix for a boot crash on some platforms introduced by the recent pkey
refactoring.

Thanks to:
 Christian Zigotzky, Aneesh Kumar K.V.

- ------------------------------------------------------------------
Aneesh Kumar K.V (1):
     powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)


arch/powerpc/mm/book3s64/hash_utils.c |  5 ++---
arch/powerpc/mm/book3s64/pkeys.c      | 12 ++++++------
2 files changed, 8 insertions(+), 9 deletions(-)

xeno74 · Post by **xeno74** » Sat Aug 15, 2020 2:41 pm

Hi All,

I released the alpha6 of kernel 5.9 for the X1000 and X5000 today.

New:

PowerPC fixes 5.9-2 (We don't need the pkeys-v2 patch for the X1000 anymore)
KVM updates
Linux Git log
Phoronix articles, reviews and news stories covering Linux 5.9

Download: linux-image-5.9-alpha6-X1000_X5000.tar.gz

Please test the kernels.

Thanks,
Christian

xeno74 · Post by **xeno74** » Mon Aug 17, 2020 11:40 am

Hi All,

The RC1 of kernel 5.9 is available for the X1000 and X5000.

New:

Issues:

Virtual e5500 QEMU machine with a VirtIO-GPU: The issue with the VirtIO-GPU still exists. Therefore we still need the virtio_gpu patch.
X5000: We still need the dpaa-v1 patch because of the DPAA issue on Ubuntu 16.04.

Download: linux-image-5.9-rc1-X1000_X5000.tar.gz

Please test the kernels.

Thanks,
Christian

xeno74 · Post by **xeno74** » Tue Aug 18, 2020 1:24 pm

Great news because of the issue with the VirtIO-GPU.

Gerd Hoffmann wrote: It is fixed in drm-misc-next (commit 51c3b0cc32d2e17581fce5b487ee95bbe9e8270a).

Will cherry-pick into drm-misc-fixes once the branch is 5.9-based, which
in turn should bring it to 5.9-rc2 or -rc3.

take care,
Gerd

Link to drm-misc-next (commit 51c3b0cc32d2e17581fce5b487ee95bbe9e8270a)

xeno74 · Post by **xeno74** » Wed Aug 19, 2020 12:14 pm

Hi All,

I compiled a new RC1 with Gerd's and our patch today. With these patches, the VirtIO-GPU works without any problems. I can use higher resolutions again.

Download: linux-image-5.9-rc1-3-X5000.tar.gz

Screenshot of the RC1-3 with the VirtIO-GPU in a virtual e5500 QEMU/KVM HV machine on my X5000:

Cheers,
Christian

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