From: Quentin Perret <qperret@google.com>
To: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org,
james.morse@arm.com, julien.thierry.kdev@gmail.com,
suzuki.poulose@arm.com
Cc: android-kvm@google.com, seanjc@google.com, mate.toth-pal@arm.com,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
linux-arm-kernel@lists.infradead.org, kernel-team@android.com,
kvmarm@lists.cs.columbia.edu, tabba@google.com, ardb@kernel.org,
mark.rutland@arm.com, dbrazdil@google.com, qperret@google.com
Subject: [PATCH v6 01/38] arm64: lib: Annotate {clear, copy}_page() as position-independent
Date: Fri, 19 Mar 2021 10:01:09 +0000 [thread overview]
Message-ID: <20210319100146.1149909-2-qperret@google.com> (raw)
In-Reply-To: <20210319100146.1149909-1-qperret@google.com>
From: Will Deacon <will@kernel.org>
clear_page() and copy_page() are suitable for use outside of the kernel
address space, so annotate them as position-independent code.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
---
arch/arm64/lib/clear_page.S | 4 ++--
arch/arm64/lib/copy_page.S | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/lib/clear_page.S b/arch/arm64/lib/clear_page.S
index 073acbf02a7c..b84b179edba3 100644
--- a/arch/arm64/lib/clear_page.S
+++ b/arch/arm64/lib/clear_page.S
@@ -14,7 +14,7 @@
* Parameters:
* x0 - dest
*/
-SYM_FUNC_START(clear_page)
+SYM_FUNC_START_PI(clear_page)
mrs x1, dczid_el0
and w1, w1, #0xf
mov x2, #4
@@ -25,5 +25,5 @@ SYM_FUNC_START(clear_page)
tst x0, #(PAGE_SIZE - 1)
b.ne 1b
ret
-SYM_FUNC_END(clear_page)
+SYM_FUNC_END_PI(clear_page)
EXPORT_SYMBOL(clear_page)
diff --git a/arch/arm64/lib/copy_page.S b/arch/arm64/lib/copy_page.S
index e7a793961408..29144f4cd449 100644
--- a/arch/arm64/lib/copy_page.S
+++ b/arch/arm64/lib/copy_page.S
@@ -17,7 +17,7 @@
* x0 - dest
* x1 - src
*/
-SYM_FUNC_START(copy_page)
+SYM_FUNC_START_PI(copy_page)
alternative_if ARM64_HAS_NO_HW_PREFETCH
// Prefetch three cache lines ahead.
prfm pldl1strm, [x1, #128]
@@ -75,5 +75,5 @@ alternative_else_nop_endif
stnp x16, x17, [x0, #112 - 256]
ret
-SYM_FUNC_END(copy_page)
+SYM_FUNC_END_PI(copy_page)
EXPORT_SYMBOL(copy_page)
--
2.31.0.rc2.261.g7f71774620-goog
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next prev parent reply other threads:[~2021-03-19 10:03 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 10:01 [PATCH v6 00/38] KVM: arm64: Stage-2 for the host Quentin Perret
2021-03-19 10:01 ` Quentin Perret [this message]
2021-03-19 10:01 ` [PATCH v6 02/38] KVM: arm64: Link position-independent string routines into .hyp.text Quentin Perret
2021-03-19 10:01 ` [PATCH v6 03/38] arm64: kvm: Add standalone ticket spinlock implementation for use at hyp Quentin Perret
2021-03-19 10:01 ` [PATCH v6 04/38] KVM: arm64: Initialize kvm_nvhe_init_params early Quentin Perret
2021-03-19 10:01 ` [PATCH v6 05/38] KVM: arm64: Avoid free_page() in page-table allocator Quentin Perret
2021-03-19 10:01 ` [PATCH v6 06/38] KVM: arm64: Factor memory allocation out of pgtable.c Quentin Perret
2021-03-19 10:01 ` [PATCH v6 07/38] KVM: arm64: Introduce a BSS section for use at Hyp Quentin Perret
2021-03-19 10:01 ` [PATCH v6 08/38] KVM: arm64: Make kvm_call_hyp() a function call " Quentin Perret
2021-03-19 10:01 ` [PATCH v6 09/38] KVM: arm64: Allow using kvm_nvhe_sym() in hyp code Quentin Perret
2021-03-19 10:01 ` [PATCH v6 10/38] KVM: arm64: Introduce an early Hyp page allocator Quentin Perret
2021-03-19 10:01 ` [PATCH v6 11/38] KVM: arm64: Stub CONFIG_DEBUG_LIST at Hyp Quentin Perret
2021-03-19 10:01 ` [PATCH v6 12/38] KVM: arm64: Introduce a Hyp buddy page allocator Quentin Perret
2021-03-19 10:01 ` [PATCH v6 13/38] KVM: arm64: Enable access to sanitized CPU features at EL2 Quentin Perret
2021-03-22 11:24 ` Will Deacon
2021-03-22 13:44 ` Marc Zyngier
2021-03-22 14:19 ` Quentin Perret
2021-03-19 10:01 ` [PATCH v6 14/38] KVM: arm64: Provide __flush_dcache_area " Quentin Perret
2021-03-22 11:25 ` Will Deacon
2021-03-19 10:01 ` [PATCH v6 15/38] KVM: arm64: Factor out vector address calculation Quentin Perret
2021-03-19 10:01 ` [PATCH v6 16/38] arm64: asm: Provide set_sctlr_el2 macro Quentin Perret
2021-03-19 10:01 ` [PATCH v6 17/38] KVM: arm64: Prepare the creation of s1 mappings at EL2 Quentin Perret
2021-03-19 10:01 ` [PATCH v6 18/38] KVM: arm64: Elevate hypervisor mappings creation " Quentin Perret
2021-03-19 10:01 ` [PATCH v6 19/38] KVM: arm64: Use kvm_arch for stage 2 pgtable Quentin Perret
2021-03-19 10:01 ` [PATCH v6 20/38] KVM: arm64: Use kvm_arch in kvm_s2_mmu Quentin Perret
2021-03-19 10:01 ` [PATCH v6 21/38] KVM: arm64: Set host stage 2 using kvm_nvhe_init_params Quentin Perret
2021-03-19 10:01 ` [PATCH v6 22/38] KVM: arm64: Refactor kvm_arm_setup_stage2() Quentin Perret
2021-03-19 10:01 ` [PATCH v6 23/38] KVM: arm64: Refactor __load_guest_stage2() Quentin Perret
2021-03-19 10:01 ` [PATCH v6 24/38] KVM: arm64: Refactor __populate_fault_info() Quentin Perret
2021-03-19 10:01 ` [PATCH v6 25/38] KVM: arm64: Make memcache anonymous in pgtable allocator Quentin Perret
2021-03-19 10:01 ` [PATCH v6 26/38] KVM: arm64: Reserve memory for host stage 2 Quentin Perret
2021-03-19 10:01 ` [PATCH v6 27/38] KVM: arm64: Sort the hypervisor memblocks Quentin Perret
2021-03-19 10:01 ` [PATCH v6 28/38] KVM: arm64: Always zero invalid PTEs Quentin Perret
2021-03-19 10:01 ` [PATCH v6 29/38] KVM: arm64: Use page-table to track page ownership Quentin Perret
2021-03-22 11:27 ` Will Deacon
2021-03-19 10:01 ` [PATCH v6 30/38] KVM: arm64: Refactor the *_map_set_prot_attr() helpers Quentin Perret
2021-03-19 10:01 ` [PATCH v6 31/38] KVM: arm64: Add kvm_pgtable_stage2_find_range() Quentin Perret
2021-03-19 10:01 ` [PATCH v6 32/38] KVM: arm64: Introduce KVM_PGTABLE_S2_NOFWB stage 2 flag Quentin Perret
2021-03-22 12:19 ` Will Deacon
2021-03-19 10:01 ` [PATCH v6 33/38] KVM: arm64: Introduce KVM_PGTABLE_S2_IDMAP " Quentin Perret
2021-03-22 11:33 ` Will Deacon
2021-03-19 10:01 ` [PATCH v6 34/38] KVM: arm64: Provide sanitized mmfr* registers at EL2 Quentin Perret
2021-03-19 10:01 ` [PATCH v6 35/38] KVM: arm64: Wrap the host with a stage 2 Quentin Perret
2021-03-19 10:01 ` [PATCH v6 36/38] KVM: arm64: Page-align the .hyp sections Quentin Perret
2021-03-19 10:01 ` [PATCH v6 37/38] KVM: arm64: Disable PMU support in protected mode Quentin Perret
2021-03-19 10:01 ` [PATCH v6 38/38] KVM: arm64: Protect the .hyp sections from the host Quentin Perret
2021-03-25 11:13 ` [PATCH v6 00/38] KVM: arm64: Stage-2 for " Marc Zyngier
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