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| author | Bin Lu <bin.lu@arm.com> | 2020-09-30 10:16:02 +0800 |
|---|---|---|
| committer | Bin Lu <bin.lu@arm.com> | 2020-10-11 23:32:54 -0400 |
| commit | 1557153cadb260706bc9721e50dc0797a2a8c48b (patch) | |
| tree | 3008f125a28f2d9d9e200c9aa5f4309d609c1c5c /pkg/sentry/platform/ring0 | |
| parent | db36d948fa63ce950d94a5e8e9ebc37956543661 (diff) | |
arm64 kvm: add tls-usr support
The tls of guest-el1-sentry and host-el0-sentry may be different on Arm64.
I added a solution for it.
Signed-off-by: Bin Lu <bin.lu@arm.com>
Diffstat (limited to 'pkg/sentry/platform/ring0')
| -rw-r--r-- | pkg/sentry/platform/ring0/lib_arm64.go | 6 | ||||
| -rw-r--r-- | pkg/sentry/platform/ring0/lib_arm64.s | 10 |
2 files changed, 0 insertions, 16 deletions
diff --git a/pkg/sentry/platform/ring0/lib_arm64.go b/pkg/sentry/platform/ring0/lib_arm64.go index 2f1abcb0f..d91a09de1 100644 --- a/pkg/sentry/platform/ring0/lib_arm64.go +++ b/pkg/sentry/platform/ring0/lib_arm64.go @@ -53,12 +53,6 @@ func LoadFloatingPoint(*byte) // SaveFloatingPoint saves floating point state. func SaveFloatingPoint(*byte) -// GetTLS returns the value of TPIDR_EL0 register. -func GetTLS() (value uint64) - -// SetTLS writes the TPIDR_EL0 value. -func SetTLS(value uint64) - // Init sets function pointers based on architectural features. // // This must be called prior to using ring0. diff --git a/pkg/sentry/platform/ring0/lib_arm64.s b/pkg/sentry/platform/ring0/lib_arm64.s index 8aabf7d0e..da9d3cf55 100644 --- a/pkg/sentry/platform/ring0/lib_arm64.s +++ b/pkg/sentry/platform/ring0/lib_arm64.s @@ -29,16 +29,6 @@ TEXT ·FlushTlbAll(SB),NOSPLIT,$0 ISB $15 RET -TEXT ·GetTLS(SB),NOSPLIT,$0-8 - MRS TPIDR_EL0, R1 - MOVD R1, ret+0(FP) - RET - -TEXT ·SetTLS(SB),NOSPLIT,$0-8 - MOVD addr+0(FP), R1 - MSR R1, TPIDR_EL0 - RET - TEXT ·CPACREL1(SB),NOSPLIT,$0-8 WORD $0xd5381041 // MRS CPACR_EL1, R1 MOVD R1, ret+0(FP) |