linux-user/aarch64: Enable hwcap for RND, BTI, and MTE

[PATCH] linux-user/aarch64: Enable hwcap for RND, BTI, and MTE

Richard Henderson posted 1 patch 3 years ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20210427214108.88503-1-richard.henderson@linaro.org

Maintainers: Laurent Vivier <laurent@vivier.eu>

linux-user/elfload.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

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[PATCH] linux-user/aarch64: Enable hwcap for RND, BTI, and MTE

Posted by Richard Henderson 3 years ago

These three features are already enabled by TCG, but are missing
their hwcap bits.  Update HWCAP2 from linux v5.12.

Cc: qemu-stable@nongnu.org (for 6.0.1)
Buglink: https://bugs.launchpad.net/bugs/1926044
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/elfload.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index c6731013fd..fc9c4f12be 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -586,6 +586,16 @@ enum {
     ARM_HWCAP2_A64_SVESM4       = 1 << 6,
     ARM_HWCAP2_A64_FLAGM2       = 1 << 7,
     ARM_HWCAP2_A64_FRINT        = 1 << 8,
+    ARM_HWCAP2_A64_SVEI8MM      = 1 << 9,
+    ARM_HWCAP2_A64_SVEF32MM     = 1 << 10,
+    ARM_HWCAP2_A64_SVEF64MM     = 1 << 11,
+    ARM_HWCAP2_A64_SVEBF16      = 1 << 12,
+    ARM_HWCAP2_A64_I8MM         = 1 << 13,
+    ARM_HWCAP2_A64_BF16         = 1 << 14,
+    ARM_HWCAP2_A64_DGH          = 1 << 15,
+    ARM_HWCAP2_A64_RNG          = 1 << 16,
+    ARM_HWCAP2_A64_BTI          = 1 << 17,
+    ARM_HWCAP2_A64_MTE          = 1 << 18,
 };
 
 #define ELF_HWCAP   get_elf_hwcap()
@@ -640,6 +650,9 @@ static uint32_t get_elf_hwcap2(void)
     GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP);
     GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2);
     GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT);
+    GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG);
+    GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI);
+    GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE);
 
     return hwcaps;
 }
-- 
2.25.1

Re: [PATCH] linux-user/aarch64: Enable hwcap for RND, BTI, and MTE

Posted by Peter Maydell 3 years ago

On Tue, 27 Apr 2021 at 22:41, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> These three features are already enabled by TCG, but are missing
> their hwcap bits.  Update HWCAP2 from linux v5.12.
>
> Cc: qemu-stable@nongnu.org (for 6.0.1)
> Buglink: https://bugs.launchpad.net/bugs/1926044
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  linux-user/elfload.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)



Applied to target-arm.next, thanks.

-- PMM