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linux5.9: provisionally enable VAS on 4k pagesize

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CONFIG_PPC_VAS depends on 64k pages, but after making a small tweak
to the init code, it seems to work fine on 4k pages, allowing
use of the NX gzip accelerator on POWER9.
This commit is contained in:
Will Springer 2020-11-17 04:16:10 -08:00 committed by q66
parent 930904da84
commit 82232b3248
2 changed files with 31 additions and 3 deletions
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8
srcpkgs/linux5.9/files/ppc64le-dotconfig
View File

@ -1,11 +1,11 @@
#
# Automatically generated file; DO NOT EDIT.
# Linux/powerpc 5.9.6 Kernel Configuration
# Linux/powerpc 5.9.8 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="powerpc64le-linux-musl-gcc (GCC) 9.3.0"
CONFIG_CC_VERSION_TEXT="gcc (GCC) 9.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=90300
CONFIG_LD_VERSION=232000000
CONFIG_LD_VERSION=234000000
CONFIG_CLANG_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
@ -333,6 +333,7 @@ CONFIG_PPC_XIVE_SPAPR=y
CONFIG_PPC_POWERNV=y
CONFIG_OPAL_PRD=m
CONFIG_PPC_MEMTRACE=y
CONFIG_PPC_VAS=y
CONFIG_SCOM_DEBUGFS=y
CONFIG_PPC_PSERIES=y
CONFIG_PPC_SPLPAR=y
@ -9205,6 +9206,7 @@ CONFIG_CRYPTO_HW=y
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_COMPRESS=m
CONFIG_CRYPTO_DEV_NX_COMPRESS_PSERIES=m
CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERNV=m
# CONFIG_CRYPTO_DEV_ATMEL_ECC is not set
# CONFIG_CRYPTO_DEV_ATMEL_SHA204A is not set
# CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set

26
srcpkgs/linux5.9/patches/ppc-vas-on-4k.patch Normal file
View File

@ -0,0 +1,26 @@
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig
index 938803eab0ad..40c81b358004 100644
--- a/arch/powerpc/platforms/powernv/Kconfig
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -35,7 +35,7 @@ config PPC_MEMTRACE
config PPC_VAS
bool "IBM Virtual Accelerator Switchboard (VAS)"
- depends on PPC_POWERNV && PPC_64K_PAGES
+ depends on PPC_POWERNV
default y
help
This enables support for IBM Virtual Accelerator Switchboard (VAS).
diff --git a/arch/powerpc/platforms/powernv/vas.c b/arch/powerpc/platforms/powernv/vas.c
index 598e4cd563fb..d81e55de6db4 100644
--- a/arch/powerpc/platforms/powernv/vas.c
+++ b/arch/powerpc/platforms/powernv/vas.c
@@ -70,7 +70,7 @@ static int init_vas_instance(struct platform_device *pdev)
return -ENODEV;
}
- if (pdev->num_resources != 4) {
+ if (pdev->num_resources < 4) {
pr_err("Unexpected DT configuration for [%s, %d]\n",
pdev->name, vasid);
return -ENODEV;