Christophe Leroy c21f5a9ed8 powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX ... When booting through OF, setup_disp_bat() does nothing because disp_BAT are not set. By change, it used to work because BOOTX buffer is mapped 1:1 at address 0x81000000 by the bootloader, and btext_setup_display() sets virt addr same as phys addr. But since commit 215b823707 ("powerpc/32s: set up an early static hash table for KASAN."), a temporary page table overrides the bootloader mapping. This 0x81000000 is also problematic with the newly implemented Kernel Userspace Access Protection (KUAP) because it is within user address space. This patch fixes those issues by properly setting disp_BAT through a call to btext_prepare_BAT(), allowing setup_disp_bat() to properly setup BAT3 for early bootx screen buffer access. Reported-by: Mathieu Malaterre <malat@debian.org> Fixes: 215b823707 ("powerpc/32s: set up an early static hash table for KASAN.") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2019-06-07 19:00:14 +10:00
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asm	powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX	2019-06-07 19:00:14 +10:00
uapi/asm	KVM: PPC: Book3S HV: XIVE: Add a mapping for the source ESB pages	2019-04-30 19:35:16 +10:00