| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <774fd766a8b9bcb9173b5e677d5dad0df2d3970f.1724173828.git.christophe.leroy@csgroup.eu> Date: Tue, 20 Aug 2024 19:23:52 +0200 From: Christophe Leroy <christophe.leroy@...roup.eu> To: CASAUBON Jean Michel <jean-michel.casaubon@...soprasteria.com>, Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, Naveen N Rao <naveen@...nel.org> Cc: Christophe Leroy <christophe.leroy@...roup.eu>, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org Subject: [PATCH 08/14] powerpc/8xx: Inconditionally use task PGDIR in ITLB misses Now that modules exec page tables are preallocated, the instruction TLBmiss handler can use task PGDIR inconditionally. Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu> --- arch/powerpc/kernel/head_8xx.S | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 66ee0a31d99d..f9a05648a522 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -199,18 +199,7 @@ instruction_counter: mfspr r10, SPRN_SRR0 /* Get effective address of fault */ INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11) mtspr SPRN_MD_EPN, r10 -#ifdef CONFIG_EXECMEM - mfcr r11 - compare_to_kernel_boundary r10, r10 -#endif mfspr r10, SPRN_M_TWB /* Get level 1 table */ -#ifdef CONFIG_EXECMEM - blt+ 3f - rlwinm r10, r10, 0, 20, 31 - oris r10, r10, (swapper_pg_dir - PAGE_OFFSET)@ha -3: - mtcr r11 -#endif lwz r11, (swapper_pg_dir-PAGE_OFFSET)@l(r10) /* Get level 1 entry */ mtspr SPRN_MD_TWC, r11 mfspr r10, SPRN_MD_TWC -- 2.44.0
Powered by blists - more mailing lists