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[02/14] KVM: arm64: Define a macro for storing a value inside a per_cpu variable

Message ID 20200914172750.852684-3-georgepope@google.com
State New
Headers show
Series UBSan Enablement for hyp/nVHE code | expand

Commit Message

George Popescu Sept. 14, 2020, 5:27 p.m. UTC
From: George Popescu <georgepope@google.com>

Use the hyp_str_this_cpu assembly macro to store a value in a per_cpu
variable. This macro is designed to be used inside of the hyp code.

Signed-off-by: George Popescu <georgepope@google.com>
 arch/arm64/include/asm/kvm_asm.h | 5 +++++
 1 file changed, 5 insertions(+)
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diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 6f98fbd0ac81..200bb8d0a720 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -211,6 +211,11 @@  extern char __smccc_workaround_1_smc[__SMCCC_WORKAROUND_1_SMC_SZ];
 	ldr	\reg,  [\reg, \tmp]
+.macro hyp_str_this_cpu sym, reg, tmp1, tmp2
+	hyp_adr_this_cpu \tmp1, \sym, \tmp2
+	str	\reg, [\tmp1]
 .macro get_host_ctxt reg, tmp
 	hyp_adr_this_cpu \reg, kvm_host_data, \tmp
 	add	\reg, \reg, #HOST_DATA_CONTEXT